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1Z0-593 Oracle existent Application Clusters 11g Essentials

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1Z0-593 exam Dumps Source : Oracle existent Application Clusters 11g Essentials

Test Code : 1Z0-593
Test designation : Oracle existent Application Clusters 11g Essentials
Vendor designation : Oracle
: 79 existent Questions

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Oracle Oracle existent Application Clusters

Oracle Database 12c liberate 2 precise software Clusters handbook: ideas, Administration, Tuning & Troubleshooting | existent Questions and Pass4sure dumps

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Oracle Clusterware and Oracle actual utility Clusters | existent Questions and Pass4sure dumps

This chapter introduces Oracle Clusterware and Oracle precise utility Clusters (Oracle RAC) via describing these items as well as a way to install, administer, and set up them. This chapter describes Oracle Clusterware and Oracle RAC architectures as well as the utility and hardware add-ons for both of these items. This chapter additionally in brief describes workload administration, features, and inordinate availability for both single-example Oracle databases and Oracle RAC environments. This chapter includes the following topics:

Oracle Clusterware and Oracle objective application Clusters

A cluster includes multiple interconnected computer systems or servers that appear fancy they're one server to conclusion users and purposes. Oracle Database 10g objective utility Clusters (Oracle RAC) allows the clustering of the Oracle Database. Oracle RAC makes disburse of Oracle Clusterware for the infrastructure to bind multiple servers so that they operate as a lone system.

Oracle Clusterware is a portable cluster administration solution it really is built-in with the Oracle database. The Oracle Clusterware is also a required component for using Oracle RAC. additionally, Oracle Clusterware enables both single-illustration Oracle databases and Oracle RAC databases to disburse the Oracle tall availability infrastructure. The Oracle Clusterware makes it workable for you to create a clustered pool of storage for disburse by way of any compund of single-illustration and Oracle RAC databases.

Oracle Clusterware is the most efficacious clusterware that you simply requisite for many systems on which Oracle RAC operates. which you can also disburse clusterware from different vendors if the clusterware is certified for Oracle RAC.

Single-example Oracle databases Have a one-to-one relationship between the Oracle database and the example. Oracle RAC environments, although, Have a one-to-many relationship between the database and circumstances. In Oracle RAC environments, the cluster database cases entry one database. The mixed processing vitality of the distinct servers can supply enhanced throughput and scalability than is accessible from a lone server. Oracle RAC is the Oracle Database election that gives a lone device picture for dissimilar servers to access one Oracle database. In Oracle RAC, each Oracle sample constantly runs on a sunder server.

Oracle RAC is a different know-how that provides inordinate availability and scalability for outright application forms. The Oracle RAC infrastructure is also a key component for enforcing the Oracle commerce grid computing architecture. Having distinctive situations access a lone database prevents the server from being a lone component of failure. Oracle RAC allows for you to blend smaller commodity servers perquisite into a cluster to create scalable environments that advocate mission Important enterprise functions. applications that you just installation on Oracle RAC databases can operate without code alterations.

The Oracle Clusterware architecture and Oracle Clusterware Processing

The Oracle Clusterware is software that after installed on servers running the equal working device, enables the servers to breathe confident together to operate as if they Have been one server. The Oracle Clusterware requires two clusterware accessories: a voting disk to list node membership assistance and the Oracle Cluster Registry (OCR) to record cluster configuration assistance. The balloting disk and the OCR must dwell on shared storage. The Oracle Clusterware requires that every node breathe connected to a non-public network by way of a non-public interconnect.

The private interconnect that Oracle Clusterware requires is a sunder community that you just configure between the cluster nodes. This interconnect, which is required by means of Oracle RAC, can also breathe the identical community that the clusterware makes disburse of, but the interconnect should noiseless no longer breathe obtainable by way of nodes that aren't a allotment of the cluster.

Oracle recommends that you configure a redundant interconnect to hold away from the interconnect from being a lone component of failure. Oracle also recommends that you simply disburse user Datagram Protocol (UDP) on a Gigabit Ethernet in your cluster interconnect. Crossover cables aren't supported for disburse with Oracle Clusterware or Oracle RAC databases.

The Oracle Clusterware manages node membership and prevents cleave up irony syndrome during which two or greater instances try to manage the database. this may betide in instances where there's a damage in verbal exchange between nodes throughout the interconnect.

The Oracle Clusterware structure supports inordinate availability by way of immediately restarting stopped add-ons. The Oracle Clusterware can immediately re-start a node to steer clear of complications with that node from affecting the supply of the relaxation of the Oracle RAC ambiance. In an Oracle RAC atmosphere, outright Oracle methods are below the manage of the Oracle clusterware. The Oracle Clusterware also provides an software programming interface (API) that permits you to control other Oracle approaches with Oracle Clusterware.

Oracle Clusterware application component Processing particulars

The Oracle Clusterware includes several heritage techniques that facilitate cluster operations. The Cluster Synchronization carrier (CSS), adventure management (EVM), and Oracle Cluster components talk with other cluster component layers in the other situations in the identical cluster database environment. These add-ons are also the main conversation hyperlinks between the Oracle Clusterware tall availability components and the Oracle Database. additionally, these add-ons panoply screen and control database operations.

the following record describes the functions of some of the main Oracle Clusterware components. This record comprises these add-ons that are approaches on Unix and Linux working techniques or services on windows.


On home windows-primarily based working techniques, many of the components are threads of the Oracle technique instead of sunder strategies.
  • Cluster Synchronization features (CSS)—Manages the cluster configuration with the aid of controlling which nodes are members of the cluster and by notifying individuals when a node joins or leaves the cluster. if you are the usage of third-celebration clusterware, then the css way interfaces together with your clusterware to control node membership assistance.

  • Cluster competent services (CRS)—The basic software for managing inordinate availability operations within a cluster. anything else that the crs way manages is called a cluster useful resource which could breathe a database, an instance, a provider, a Listener, a virtual IP (VIP) address, an utility procedure, etc. The crs manner manages cluster substances in keeping with the aid's configuration assistance that's saved in the OCR. This comprises beginning, cease, video panoply and failover operations. The crs technique generates movements when a resource reputation adjustments. in case you Have attach in Oracle RAC, crs screens the Oracle instance, Listener, and so forth, and immediately restarts these accessories when a failure happens. via default, the crs way makes five makes an attempt to restart a useful resource after which doesn't rate extra restart attempts if the resource doesn't restart.

  • event administration (EVM)—A history way that publishes routine that crs creates.

  • Oracle Notification service (ONS)—A publish and subscribe carrier for speaking quick application Notification (FAN) movements.

  • RACG—Extends clusterware to usher Oracle-selected requirements and sophisticated supplies. Runs server callout scripts when FAN pursuits eddy up.

  • procedure video panoply Daemon (OPROCD)—This manner is locked in memory to monitor the cluster and provide I/O fencing. OPROCD performs its determine, stops running, and if the wake up is past the anticipated time, then OPROCD resets the processor and reboots the node. An OPROCD failure consequences in Oracle Clusterware restarting the node. OPROCD makes disburse of the hangcheck timer on Linux structures.

  • In the following table, if a technique has a (r) beside it, then the procedure runs as the root person. in any other case the way runs as the oracle user.

    table 1-1 record of strategies and home windows features associated with Oracle Clusterware

    Oracle Clusterware element Linux/Unix method windows amenitiesWindows procedures

    process monitor Daemon

    oprocd (r)



    racgmain, racgimon

    racgmain.exe racgimon.exe

    Oracle Notification provider (ONS)



    event supervisor

    evmd (r), evmd.bin, evmlogger


    evmlogger.exe, evmd.exe

    Cluster competent

    crsd.bin (r)



    Cluster Synchronization capabilities

    init.cssd (r), ocssd (r), ocssd.bin



    The Oracle Clusterware application accessories

    When Oracle Clusterware operates, a number of platform-selected approaches or capabilities will also breathe working on each and every node within the cluster to advocate Oracle Clusterware. The Oracle Clusterware platform-certain UNIX-primarily based methods and windows-primarily based capabilities are described under here headings:

    Oracle Clusterware processes on UNIX-based mostly techniques

    The Oracle Clusterware methods on UNIX-based systems are:

  • crsd—Performs tall availability healing and management operations similar to preserving the OCR and managing utility supplies. This manner runs as the root person, or by using a person within the admin group on Mac OS X-primarily based techniques. This manner restarts immediately upon failure.

  • evmd—event supervisor daemon. This way additionally begins the racgevt procedure to manipulate FAN server callouts.

  • ocssd—Manages cluster node membership and runs because the oracle consumer; failure of this process consequences in cluster restart.

  • oprocd—manner panoply screen for the cluster. notice that this way handiest looks on systems that don't disburse vendor clusterware with Oracle Clusterware.

  • be aware:

    Oracle RAC on Linux platforms can Have dissimilar threads that appear as sunder techniques with sunder system identifiers. Oracle Clusterware services on windows-based systems

    The Oracle Clusterware functions on home windows-based methods are:

  • OracleCRService—Performs inordinate availability recovery and administration operations reminiscent of keeping the OCR and managing software supplies. This process runs as the root consumer, or by using a person in the admin group on Mac OS X-based techniques. This process restarts immediately upon failure.

  • OracleCSService—Manages cluster node membership and runs as oracle consumer; failure of this technique results in cluster restart.

  • OracleEVMService—experience supervisor daemon. This procedure additionally starts the racgevt system to control FAN server callouts.

  • OraFenceService—technique monitor for the cluster. keep that this procedure most efficacious seems on systems that don't disburse supplier clusterware with Oracle Clusterware.

  • The Oracle actual software Clusters structure and Oracle existent utility Clusters Processing

    An Oracle RAC database is a logically or physically shared every thing database. outright datafiles, control info, PFILEs, and redo log files in Oracle RAC environments ought to tarry on cluster-aware shared disks so that outright the cluster database cases can entry them. the entire situations should also partake the identical interconnect. additionally, Oracle RAC databases can partake the identical interconnect that Oracle Clusterware uses.

    as a result of an Oracle RAC database makes disburse of a shared everything architecture, Oracle RAC requires cluster-conscious storage for outright database information. it's your election as to the way to configure your disk, but you should disburse a supported cluster-aware storage solution. Oracle Database 10g gives computerized Storage management (ASM), which is the suggested solution to manipulate your disk. however you might also also disburse a cluster-mindful extent supervisor or a cluster file rig (now not required). In Oracle RAC, the Oracle Database application manages disk access and the Oracle software is certified to breathe used on a total lot of storage architectures. An Oracle RAC database can Have as much as a hundred instances. counting on your platform, that you can disburse perquisite here file storage alternate options for Oracle RAC:

  • ASM, which Oracle recommends

  • Oracle Cluster File rig (OCFS), which is accessible for Linux and windows structures, or a 3rd-birthday celebration cluster file system that is certified for Oracle RAC

  • A community file gadget

  • raw contraptions

  • Oracle RAC databases orbit architecturally from Oracle RACsingle-instance Oracle databases in that every Oracle RAC database sample also has:

    All nodes in an Oracle RAC ambiance requisite to hook up with a aboriginal zone network (LAN) to allow users and purposes to access the database. functions should disburse the Oracle Database services feature to connect to an Oracle database. services enable you to define suggestions and traits to manage how clients and purposes connect to database cases. These traits include a unique name, workload balancing and failover options, and inordinate availability qualities. Oracle internet capabilities allows the weight balancing of utility connections throughout the entire circumstances in an Oracle RAC database.

    users can entry an Oracle RAC database using a shopper-server configuration or through one or more headquarters tiers, with or without connection pooling. users can also breathe DBAs, developers, utility users, energy users, such as records miners who create their personal searches, and the like.

    Most public networks customarily disburse TCP/IP, however which you could disburse any supported hardware and utility mixture. Oracle RAC database instances can breathe accessed via a database's defined, default IP manipulate and through VIP addresses.


    do not to rate disburse of the interconnect or the private community for person communication as a result of Cache Fusion uses the private interconnect for inter-instance communications.

    moreover the node's host designation and IP handle, you should also allot a digital host identify and an IP manipulate to each and every node. The virtual host identify or VIP should breathe used to hook up with the database example. for instance, you may enter the digital host designation CRM within the manipulate checklist of the tnsnames.ora file.

    A digital IP manipulate is another public tackle that client connections disburse in its region of the typical public IP tackle. To configure VIP addresses, you requisite to reserve a spare IP address for every node that uses the identical subnet because the public community.

    If a node fails, then the node's VIP fails over to one other node on which the VIP can not settle for connections. generally, VIPs fail over when the node on which a VIP runs fails or if outright interfaces for the VIP fail or are disconnected from the community. shoppers that attempt to connect to the VIP derive hold of a quick connection refused mistake as a substitute of awaiting TCP combine timeout messages. You configure VIP addresses within the manipulate listing in your database connection definition to enable connectivity. the following zone describes the Oracle RAC software components in more detail.

    The Oracle precise utility Clusters application accessories

    Oracle RAC databases Have two or greater database situations that every include memory constructions and history procedures. An Oracle RAC database has the equal methods and reminiscence constructions as a single-illustration Oracle database in addition to additional way and reminiscence structures that are particular to Oracle RAC. any one instance's database view is well-nigh similar to any other instance's view in the identical Oracle RAC database; the view is a lone rig picture of the ambiance.

    every illustration has a buffer cache in its rig global zone (SGA). the usage of Cache Fusion, Oracle RAC environments logically blend each example's buffer cache to enable the instances to system records as if the facts resided on a logically combined, lone cache.


    The SGA size necessities for Oracle RAC are more desirable than the SGA requirements for single-instance Oracle databases because of Cache Fusion.

    To rate unavoidable that each Oracle RAC database sample obtains the obscure that it must fulfill a question or transaction, Oracle RAC situations disburse two processes, the global Cache carrier (GCS) and the world Enqueue carrier (GES). The GCS and GES hold information of the statuses of each information file and every cached obscure the usage of a global aid listing (GRD). The GRD contents are distributed throughout outright the energetic cases, which easily raises the dimension of the device world enviornment for an Oracle RAC example.

    After one sample caches information, some other instance within the identical cluster database can purchase a obscure realistic from an extra instance in the equal database sooner than through analyzing the obscure from disk. therefore, Cache Fusion strikes present blocks between cases as opposed to re-studying the blocks from disk. When a consistent obscure is needed or a changed obscure is required on yet another illustration, Cache Fusion transfers the obscure realistic directly between the affected situations. Oracle RAC makes disburse of the inner most interconnect for inter-illustration verbal exchange and obscure transfers. The world Enqueue service video panoply and the illustration Enqueue process manages entry to Cache Fusion components in addition to enqueue recuperation processing.

    These Oracle RAC procedures and the GRD collaborate to permit Cache Fusion. The Oracle RAC methods and their identifiers are as follows:

  • LMS—international Cache carrier technique

  • LMD—international Enqueue carrier Daemon

  • LMON—world Enqueue service computer screen

  • LCK0—instance Enqueue manner

  • if you disburse network connected Storage (NAS), then you definitely are required to configure a second private community. access to this community is customarily managed through the dealer's application. The inner most network makes disburse of static IP addresses.


    lots of the Oracle add-ons that this zone describes are apart from the components which are described for single-illustration Oracle databases in Oracle Database concepts. Oracle Clusterware accessories and tall Availability

    if you betide to blend Oracle Clusterware and Oracle RAC, that you could achieve outstanding scalability and inordinate availability. The Oracle Clusterware achieves this the usage of the accessories that this zone describes under here topics:

    The Oracle Clusterware vote casting Disk and Oracle Cluster Registry

    The Oracle Clusterware requires the following two essential information:

  • vote casting Disk—Manages cluster membership by means of a fitness investigate and arbitrates cluster ownership among the situations in case of network disasters. Oracle RAC uses the balloting disk to assess which circumstances are members of a cluster. The balloting disk must tarry on shared disk. for prime availability, Oracle recommends that you've varied voting disks. The Oracle Clusterware allows for dissimilar balloting disks but you ought to Have an curious variety of voting disks, equivalent to three, five, and the like. if you define a lone voting disk, then breathe confident to disburse exterior mirroring to provide redundancy.

  • Oracle Cluster Registry (OCR)—keeps cluster configuration suggestions as well as configuration guidance about any cluster database inside the cluster. The OCR additionally manages counsel about tactics that Oracle Clusterware controls. The OCR shops configuration tips in a succession of key-value pairs inside a listing tree constitution. The OCR must tarry on shared disk it truly is attainable with the aid of the entire nodes in your cluster. The Oracle Clusterware can multiplex the OCR and Oracle recommends that you just disburse this characteristic to rate confident cluster tall availability. that you would breathe able to change a failed OCR on-line, and you'll supplant the OCR via supported APIs reminiscent of commerce supervisor, the Server manage Utility (SRVCTL), or the Database Configuration second (DBCA).

  • notice:

    each the balloting disks and the OCRs ought to dwell on either cluster file system files or on shared raw devices that you configure before you install Oracle Clusterware and Oracle RAC. Oracle Clusterware inordinate Availability and the application Programming Interface

    Oracle Clusterware provides a inordinate availability utility programming interface (API) so that you can disburse to permit Oracle Clusterware to control functions or tactics that shun a cluster. This permits you to deliver inordinate availability for outright your purposes. The Oracle Clusterware with ASM permits you to create a consolidated pool of storage to usher both the one-illustration Oracle databases and the Oracle RAC databases that are operating on your cluster.

    To hold inordinate availability, Oracle Clusterware add-ons can respond to repute alterations to restart functions and tactics in line with defined inordinate availability suggestions. moreover, which you could disburse the Oracle Clusterware inordinate availability framework by using registering your applications with Oracle Clusterware and configuring the clusterware to start, stop, or relocate your software approaches. it's, you can rate customized applications totally accessible through the disburse of Oracle Clusterware to create profiles that video display, relocate, and restart your functions. The Oracle Clusterware responds to FAN events that are created with the aid of an Oracle RAC database. Oracle announces FAN events when cluster servers may additionally eddy into unreachable and network interfaces are behind or non-practical.

    Workload administration with Oracle actual utility Clusters

    Workload administration makes it workable for you to manipulate the distribution of workloads to provide gold gauge efficiency for clients and purposes. This contains proposing the maximum availability for database connections, expeditiously failure recovery, and balancing workloads optimally across the energetic configuration. Oracle Database 10g with Oracle RAC comprises many points that can raise workload management akin to connection load balancing, quick connection failover (FCF), the load balancing advisory, and Runtime Connection Load Balancing. Workload management gives the most excellent merits to Oracle RAC environments. that you could, youngsters, pick talents of workload management by using Oracle functions in single-illustration Oracle Databases, primarily people that disburse facts shield or Streams. Workload administration includes here add-ons:

  • excessive Availability Framework—The Oracle RAC tall availability framework allows the Oracle Database to retain components in a running situation always. Oracle tall availability implies that Oracle Clusterware monitors and restarts critical components if they stop, unless you override the restart processing. The Oracle Clusterware and Oracle RAC additionally provide alerts to purchasers when configurations exchange. This enables purchasers to immediately react to the alterations, enabling application builders to cover outages and reconfigurations from discontinue users. The scope of Oracle tall availability spans from the restarting of stopped Oracle tactics in an Oracle database instance to failing over the processing of a total instance to other accessible situations.

  • Load Balancing Advisory—this is the means of the database to give assistance to purposes concerning the current provider ranges being provided with the aid of the database and its cases. functions can pick edge of this counsel to direct connection requests to the sample so that it will supply the software request with the most efficacious provider satisfactory to comprehensive the application's processing. Oracle has integrated its Java Database Connectivity (JDBC) and Oracle information company for .web ( connection swimming pools to toil with the weight balancing counsel. functions can disburse the integrated connection pools without programmatic changes.

  • functions—Oracle Database 10g introduces a powerful automated workload management facility, called services, to allow the commerce grid vision. functions are entities that you can profile in Oracle RAC databases. capabilities enable you to community database workloads and route the toil to the surest circumstances that are assigned to technique the provider. furthermore, you could disburse services to profile the resources that Oracle assigns to technique workloads and to computer screen workload resources. purposes that you just allot to functions transparently purchase the described workload management qualities, together with inordinate availability and load balancing suggestions. Many Oracle database aspects are built-in with functions, comparable to useful resource supervisor, which makes it workable for you to preclude the supplies that a service can disburse inside an illustration. Some database points are additionally integrated with Oracle Streams, superior Queuing, to obtain queue location transparency, and the Oracle Scheduler, to map capabilities to particular job courses.

    In Oracle RAC databases, the service performance guidelines that you just configure control the amount of labor that Oracle allocates to every accessible instance for that provider. As you extend your database through adding nodes, functions, add-ons of functions, and so on, which you could add extra services.

  • Connection Load Balancing— Oracle web capabilities provides connection load balancing for database connections. Connection load balancing happens when the connection is created. Connections for a given provider are balanced throughout the entire working situations that proffer the carrier. recollect to profile the way you want connections to breathe balanced within the service definition. although, you ought to noiseless configure Oracle web capabilities. in case you allow the tribulation balancing advisory, the Listener uses the load balancing advisory for connection load balancing.

  • Introduction to installation Oracle Clusterware and Oracle actual application Clusters

    This zone introduces the storage alternate options for Oracle RAC and the installation approaches for both Oracle Clusterware and Oracle RAC beneath the following issues:

    Oracle Clusterware setting up procedure Description

    The Oracle Clusterware is allotted on the Oracle Database 10g installing media. The Oracle customary Installer (OUI) installs Oracle Clusterware perquisite into a directory constitution, which can breathe called CRS_home, it really is become independent from other Oracle software operating on the laptop. as a result of Oracle Clusterware works intently with the working equipment, device administrator entry is required for some of the installation projects. moreover, one of the most Oracle Clusterware procedures should shun because the gadget administrator, which is often the basis person on Unix and Linux systems and the gadget Administrator person on windows methods.

    before you install Oracle Clusterware, Oracle recommends that you just shun the Cluster Verification Utility (CVU) to rate unavoidable that your ambiance meets the Oracle Clusterware setting up necessities. The OUI additionally immediately runs CVU on the discontinue of the clusterware setting up to determine numerous clusterware accessories. The CVU simplifies the installation, configuration, and timehonored administration of the Oracle Clusterware installation manner by way of making a election on complications in cluster environments.

    all the way through the Oracle Clusterware setting up, you Have to identify three IP addresses for every node that goes to breathe a allotment of your setting up. One IP manipulate is for the deepest interconnect and the different is for the generic public interconnect. The third IP address is the digital IP manipulate that purchasers will disburse to hook up with each and every example.

    The Oracle Clusterware setting up manner creates the vote casting disk and OCR on cluster-conscious storage. in case you opt for the option for regular redundant copies throughout the installation method, then Oracle Clusterware automatically maintains redundant copies of these data to evade the data from fitting lone features of failure. The timehonored redundancy characteristic also eliminates the want for third celebration storage redundancy solutions. when you disburse mediocre redundancy, Oracle Clusterware automatically continues two copies of the Oracle Cluster Registry (OCR) file and three copies of the balloting Disk file.


    if you opt for exterior redundancy for the OCR and vote casting disk, then to allow redundancy, your disk subsystem Have to breathe configurable for RAID mirroring. otherwise, your rig may well breathe susceptible since the OCR and vote casting disk are lone aspects of failure. Oracle existent software Clusters setting up and Database creation procedure Description

    The Oracle RAC application is allotted as a allotment of the Oracle Database 10g installation media. by default, the mediocre Oracle Database 10g application installation process installs the Oracle RAC election when it recognizes that you are performing the installing on a cluster. The OUI installs Oracle RAC into a listing constitution, which can breathe known as Oracle_home, that is smash away other Oracle utility running on the computer. because OUI is cluster-aware, it installs the Oracle RAC software on outright the nodes that you just described to breathe allotment of the cluster. if you're using a certified cluster file rig for the Oracle domestic, then most efficacious select the node that you are connected to for the setting up.

    You must first set up Oracle Clusterware before installation Oracle RAC. After Oracle Clusterware is operational, you could disburse OUI to installation the Oracle database application with the Oracle RAC add-ons. throughout the installation, OUI runs DBCA to create your Oracle RAC database in accordance with the alternate options that you simply select. The DBCA additionally runs the net Configuration second (NETCA) to configure the network on your Oracle RAC environment.

    Oracle recommends that you opt for ASM outright the way through the setting up to simplify storage administration; ASM automatically manages the storage of outright database info inside disk organizations. that you can also configure capabilities throughout setting up, depending on your processing necessities. when you are using the Oracle Database 10g common edition, then you definitely should disburse ASM for storing outright of the database files.

    by default, DBCA creates one service in your environment and this carrier is for the database. The default provider is purchasable on outright instances in an Oracle RAC environment, except the database is in restrained mode.

    Cloning Oracle Clusterware and Oracle RAC utility in Grid Environments

    This allotment in short summarizes the strategies for deploying Oracle RAC in grid environments which Have great numbers of nodes using cloned photos for Oracle Clusterware and Oracle RAC. Oracle cloning is the favored way of extending your Oracle RAC atmosphere through including nodes and situations. To effect the cloning procedures that are summarized during this part, quest counsel from the Oracle habitual Installer and OPatch user's book.that you would breathe able to additionally disburse commerce manager Grid manage to effect cloning.

    The cloning technique assumes that you efficaciously attach in an Oracle Clusterware home and an Oracle domestic with Oracle RAC on as a minimum one node. additionally, outright root scripts requisite to Have shun successfully on the node from which you're extending your cluster database. to disburse Oracle cloning, first clone the Oracle Clusterware home and then clone the Oracle home with the Oracle RAC utility.

    To clone the Oracle Clusterware home, on UNIX-primarily based methods create a tar file of the Oracle Clusterware home and copy the file to the new node's Oracle Clusterware home. On windows-based mostly programs you Have to create zip files. Then on UNIX-based mostly methods create the required clients and organizations on the new nodes. On windows-based mostly programs, you effect not requisite to create users and companies, but the user that performs the cloning should noiseless breathe the identical person that performed the setting up.

    Extract the tar file, or unzip the zip file, and shun the Oracle commonplace Installer (OUI) in clone mode as described in the Oracle time-honored Installer and OPatch user's ebook. Then shun the setting up scripts and repeat these steps on each node that you are including. The technique for cloning the Oracle home onto new nodes is akin to the technique for cloning the Oracle Clusterware domestic. in addition, you must shun the Oracle internet Configuration second (NETCA) on every new node to create a Listener.

    if you haven't already created a database, then that you may shun the Database Configuration second (DBCA) to create one. finally, keep the submit-cloning techniques to comprehensive the extension of your Oracle RAC ambiance onto the brand new nodes.

    further issues and lines for Oracle existent software Clusters

    besides configuring features to control your workloads, additionally coincide with the usage of here facets for those who install Oracle RAC:

  • Scaling Your Oracle RAC Database—As outlined, which you can add nodes and circumstances to your Oracle RAC environment the usage of Oracle cloning. if you select to no longer disburse cloning, then you could lengthen your database through the disburse of the manual procedures that are described in Chapter 10, "including and Deleting Nodes and situations on UNIX-based mostly methods" or Chapter eleven, " adding and Deleting Nodes and situations on home windows-primarily based techniques".

  • enterprise supervisor—Use enterprise manager to manage your complete Oracle RAC environment, now not just the Oracle RAC database. disburse commercial enterprise manager to create and alter functions, and to nascence and obviate the cluster database situations and the cluster database. enterprise manager has additional features as designated within the zone "Overview of the disburse of commerce supervisor with Oracle precise utility Clusters".

  • recuperation manager (RMAN)—RMAN backs up, restores, and recovers datafiles, control files, server parameter data (SPFILEs) and archived redo logs. which you can disburse RMAN with a media supervisor to lower back up files to exterior storage. you could additionally configure parallelism when backing up or convalescing Oracle RAC databases. In Oracle RAC, RMAN channels will also breathe dynamically allotted throughout outright of the Oracle RAC circumstances. Channel failover allows failed operations on one node to proceed on an extra node. which you could disburse RMAN in Oracle RAC from the Oracle commerce supervisor Backup manager or from a command line.

  • automatic undo administration—automatically manages undo processing.

  • automatic facet zone management (ASSM)—immediately manages facet freelists and freelist groups.

  • in the neighborhood managed tablespaces—Enhances space management efficiency.

  • Cluster Verification Utility (CVU)—Use CVU to determine the fame of your clusterware in case you journey problems or disburse it whenever you reconfigure your cluster.

  • Sequences—in case you disburse sequence numbers, then outright the time disburse CACHE with the NOORDER option for top-rated sequence quantity era performance. With the CACHE alternative, despite the fact, you may additionally Have gaps in the sequence numbers. in case your environment can not tolerate sequence quantity gaps, then disburse the NOCACHE option or trust pre-generating the sequence numbers. in case your utility requires sequence quantity ordering but can tolerate gaps, then disburse CACHE and ORDER to cache and order sequence numbers in Oracle RAC. in case your utility requires ordered sequence numbers devoid of gaps, then disburse NOCACHE and ORDER. This aggregate has essentially the most poor effect on performance in comparison to different caching and ordering combinations.

  • Indexes—in case you disburse indexes, coincide with alternatives, akin to reverse key indexes, to optimize index efficiency. reverse key indexes are specifically efficacious if in case you Have common inserts to 1 facet of an index, similar to indexes which are in keeping with insert date.

  • Managing Oracle existent utility Clusters Environments

    This allotment describes perquisite here Oracle RAC ambiance administration themes:

    Designing Oracle objective application Clusters Environments

    trust performing the following steps perquisite through the design and evolution of functions that you are deploying on an Oracle RAC database. accept as objective with tuning:

  • The design and the software

  • The reminiscence and i/O

  • competition

  • The working device

  • word:

    If an application does not scale on an SMP computing device, then affecting the utility to an Oracle RAC database can't enhance efficiency.

    believe using hash partitioning for insert-intensive online transaction processing (OLTP) purposes. Hash partitioning:

  • Reduces competition on concurrent inserts perquisite into a lone database constitution

  • influences sequence-primarily based indexes when indexes are locally partitioned with a table and tables are partitioned on sequence-based mostly keys

  • Is clear to the application

  • if you hash partitioned tables and indexes for OLTP environments, then that you could vastly enrich performance to your Oracle RAC database. keep that you simply can not disburse index orbit scans on an index with hash partitioning.

    if you're the usage of sequence numbers, then at outright times disburse the CACHE choice. if you disburse sequence numbers with the CACHE option, then:

    Administrative rig for Oracle precise application Clusters Environments

    Oracle allows you to manage a cluster database as a lone system image via commercial enterprise manager, SQL*Plus, or through Oracle RAC command-line interfaces akin to Server manipulate (SRVCTL). that you can additionally disburse a number of tools and utilities to control your Oracle RAC environment and its accessories as follows:

  • enterprise manager—commercial enterprise manager has each the Database manage and Grid control GUI interfaces for managing each lone instance and Oracle RAC environments.

  • Cluster Verification Utility (CVU)—CVU is a command-line implement that you can disburse to determine a orbit of cluster and Oracle RAC-selected add-ons such as shared storage devices, networking configurations, device requirements, and Oracle Clusterware, as well as working rig businesses and clients. that you can disburse CVU for pre-installation assessments as well as for publish-installation checks of your cluster environment. CVU is particularly profitable outright through pre-installation and outright through installation of Oracle Clusterware and Oracle RAC add-ons. The OUI runs CVU after Oracle Clusterware and the Oracle installing to verify your ambiance.

  • Server control (SRVCTL)—SRVCTL is a command-line interface so you might disburse to manipulate an Oracle RAC database from a lone point. you can disburse SRVCTL to start and quit the database and cases and to delete or tide circumstances and services. you can additionally disburse SRVCTL to control configuration information.

    See additionally:

    Appendix E for greater counsel about SRVCTL
  • Cluster competent services manage (CRSCTL)—CRSCTL is a command-line device that you can disburse to manipulate Oracle Clusterware. that you would breathe able to disburse CRSCTL to birth and forestall Oracle Clusterware. CRSCTL has many alternate options such as enabling online debugging,

  • Oracle Interface Configuration implement (OIFCFG)—OIFCFG is a command-line device for each single-instance Oracle databases and Oracle RAC environments so that you can disburse to appropriate and de-allocate network interfaces to accessories. that you could additionally disburse OIFCFG to direct add-ons to rate disburse of selected network interfaces and to retrieve component configuration tips.

  • OCR Configuration implement (OCRCONFIG)—OCRCONFIG is a command-line device for OCR administration. that you can additionally disburse the OCRCHECK and OCRDUMP utilities to troubleshoot configuration complications that Have an effect on the OCR.

  • Monitoring Oracle objective software Clusters Environments

    net-based enterprise manager Database manipulate and Grid control permit you to video panoply an Oracle RAC database. The commercial enterprise supervisor Console is a central component of manage for the Oracle atmosphere that you access by means of a graphical user interface (GUI). disburse the commerce supervisor Console to stir cluster database management tasks. disburse commerce supervisor Grid manage to manage diverse Oracle RAC databases. additionally note the following elements about monitoring Oracle RAC environments:

  • The world views, or GV$ views, are in response to V$ views. The catclustdb.sql script creates the GV$ views. shun this script in case you effect not create your database with DBCA. otherwise, DBCA runs this script for you.

  • Statspack is Oracle RAC-aware.

    be aware:

    instead of the usage of Statspak, Oracle recommends that you just disburse the extra sophisticated administration and monitoring aspects of the Oracle Database 10g Diagnostic and Tuning packs which encompass the automatic Database Diagnostic computer screen (ADDM).
  • Evaluating efficiency in Oracle actual utility Clusters Environments

    You effect not deserve to office particular tuning for Oracle RAC; Oracle RAC scales with out particular configuration adjustments. in case your software carried out neatly on a single-instance Oracle database, then it's going to operate neatly in an Oracle RAC atmosphere. lots of the tuning projects that you'd effect on a single-illustration Oracle database can also extend Oracle RAC database performance. here is especially objective in case your atmosphere required scalability across a more suitable variety of CPUs.

    some of the Oracle RAC performance elements are:

  • Dynamic resource Allocation

  • Cache Fusion allows A Simplified Tuning Methodology

  • You don't Have to tune any parameters for Cache Fusion

  • No utility-degree tuning is integral

  • which you could disburse a backside-up tuning strategy with almost no effect for your current applications

  • extra targeted performance records

  • New Oracle VM Templates for Oracle objective utility Clusters Now obtainable | existent Questions and Pass4sure dumps

    New Oracle VM Templates for Oracle existent software Clusters Now accessible

    source: Oracle agency

    Oracle Corporation

    November 15, 2010 08:00 ET

    Simplifies Deployment of a enormously accessible, Virtualized Database

    REDWOOD SHORES, CA--(Marketwire - November 15, 2010) - Oracle (NASDAQ: ORCL)

    information facts

  • Enabling valued clientele to swiftly set up a highly purchasable, virtualized database, Oracle today introduced the provision of recent Oracle VM Templates for Oracle Database 11g free up 2 and Oracle real software Clusters.
  • by way of presenting pre-put in and pre-configured utility pictures, Oracle VM Templates deliver an imaginitive approach to deploying a completely configured software stack and enable virtual and cloud environments to breathe provisioned promptly, effectively, continuously, and with simplified administration.
  • the brand new Oracle VM Templates for Oracle objective software Clusters provide a expeditiously and simple approach to installation a database cluster on Oracle VM for building, check and creation environments. Clusters of any number of nodes will also breathe built, and the total installing is automated, requesting minimal information from the consumer when guests are booted.
  • Combining the merits of Oracle VM for x86 and Oracle precise utility Clusters presents a particularly available database cloud solution with outright of the advantages of a completely virtualized atmosphere.
  • the brand new Oracle VM Templates can breathe found in 32-bit or sixty four-bit device formats.
  • entertaining aggregate of Virtualization and Clustering Speeds Time to Market and makes it workable for larger Availability

  • Use of Oracle VM Templates tremendously simplifies installation and configuration, assisting in the reduction of initial and ongoing protection expenses and enabling corporations to achieve faster time to market and reduce pervade of operations.
  • by using deploying Oracle actual application Clusters in Oracle VM environments with the brand new templates, valued clientele can benefit from greater database availability. 
  • The combination of Oracle VM and Oracle actual utility Clusters makes it workable for perennial availability in the visage of hardware and utility failures, a lot bigger availability than would traditionally be received through hypervisor-handiest options from companies fancy VMware, that can handiest circulate and restart failed digital machines. 
  • Oracle VM Templates are additionally purchasable for Oracle functions, Oracle Fusion Middleware, Oracle Database, Oracle Linux, Oracle Solaris and different Oracle items.
  • helping Quote

  • "best Oracle offers the pleasing compund of clustering and virtualization," mentioned Wim Coekaerts, senior vice chairman, Linux and Virtualization Engineering, Oracle. "the disburse of an Oracle VM infrastructure combined with the efficiency, scalability and resiliency of Oracle precise software Clusters and Oracle VM Templates, they support shoppers vastly cleave back deployment and operational charges whereas enabling a tremendously accessible infrastructure."
  • supporting components

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    logos Oracle and Java are registered logos of Oracle and/or its affiliates. other names may well breathe trademarks of their respective house owners.

    For a higher journey using this web site, gladden ameliorate to a latest web browser.

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    Oracle Database 11g Release 2 is Now Available | existent questions and Pass4sure dumps

    Oracle Database 11g Release 2 is available and downloadable recently from the Oracle Technology Network (OTN). This latest generation of the world’s #1 database builds on the innovations introduced in Oracle Database 11g to advocate organizations deliver better information throughout the enterprise, at a higher property of service, and at a much lower cost.

    In this release, Oracle existent Application Clusters (RAC) delivers grid plug and play and new server pooling capabilities that enable organizations to reduce their server costs by streamlining the provisioning and management of consolidated database grids.

    Oracle RAC One Node, a new Database option, is available. Oracle RAC One Node is a solution that allows customers to more easily consolidate their less mission critical database environments on the grid with most of the redundancy and availability provided by Oracle existent Application Clusters.

    The combination of Oracle Database 11g Release 2 Advanced Compression and Partitioning supports the reduction of storage costs by compressing data as much as 2-4x and simplifying disburse of lower cost storage tiers.

    “Our customers want features that proffer better performance and availability, lower IT costs and ways to deliver better information to their commerce users,” said Andy Mendelsohn, Senior Vice President of Database Server Technologies, Oracle. “The availability of Release 2 completes the vision of Oracle Database 11g to address today’s commerce and IT challenges, and continues their strategy of helping customers deliver the highest property of service at lower cost.”

    To read replete press release, click here.

    This BeyeNETWORK news item contains information from a recent press release by the company mentioned.

    Voltaire InfiniBand Accelerates Oracle® existent Application Clusters 11g | existent questions and Pass4sure dumps

    Improves Database Performance and Enables Deployment of Larger Oracle Database Clusters; Postbank Deploys Solution for Retail Banking Application

    ORACLE OPENWORLD, San Francisco, Calif. - November 12, 2007 - Voltaire Ltd. (NASDAQ: VOLT), a leading provider of grid backbone solutions for the data center, today announced that its InfiniBand-based solutions are available for Oracle® existent Application Clusters 11g. The combination of Oracle existent Application Clusters running on Voltaire's InfiniBand-based switches and software delivers faster application-level performance than clusters using Ethernet. The solution also enables greater scalability so customers can deploy larger Oracle Database clusters than ever before.

    Postbank, one of the largest retail banks in Germany and a beta customer of the latest release of Oracle existent Applications Clusters, has tested their cash withdrawal processing application running on HP Proliant servers interconnected with a Voltaire Grid Switch(TM) 20 Gigabits/second InfiniBand switch. Postbank's application, which relies heavily on the performance of the cluster interconnect, has experienced a 50 percent boost in performance using the combined Oracle-Voltaire solution.(*)

    "We are very pleased with the performance and scalability that Voltaire InfiniBand brings to Oracle existent Application Clusters in their great Oracle Database environment," said Jens-Christian Pokolm, Analyst IT Services, Postbank. "To deliver the best and most reliable service to their customers, their applications exact expeditiously access to data and this solution truly delivers. An Important capability this solution provides is the aptitude to liquidate latency and scale their Oracle Database applications."

    "We are pleased to toil with Voltaire to bring the industry gauge OpenFabrics reliable Datagram Sockets (RDS) over InfiniBand solution to the Oracle database environment," said Juan Loaiza, Senior Vice President, Oracle. "We believe that the OpenFabrics endeavor is crucial to the success of tall performance networking protocols and cheer Voltaire's advocate of this effort."

    The OpenFabrics Alliance is a not-for-profit organization dedicated to expanding and accelerating the adoption of RDMA (Remote Direct memory Access) technologies for server and storage connectivity. Voltaire has played a major role in the OpenFabrics Alliance which led to the inclusion of InfiniBand software in several operating systems including Linux, Windows and others.

    "Aside from providing significantly faster run-time, the combination of Oracle existent Application Clusters and Voltaire InfiniBand enables the deployment of database clusters that can shun larger data sets for both data warehousing and transactional applications," said Asaf Somekh, Vice President of Strategic Alliances, Voltaire. "This solution fits in nicely with the consolidation programs many data centers are now implementing."

    "HP ProLiant servers deliver leading performance and scalability for enterprise data headquarters customers, and Oracle solutions on InfiniBand deliver the performance gains and improved scalability customers want with their applications," said John Gromala, director of ProLiant product marketing, Industry gauge Servers, HP.


    Voltaire solutions for Oracle existent Application Clusters are available today by calling 1-800-865-8247.

    Oracle OpenWorld

    Voltaire will showcase its solutions for Oracle existent Application Clusters in booth 2821 at Oracle OpenWorld in San Francisco, November 11-15, 2007. Voltaire is a member of the Oracle PartnerNetwork.

    About the Oracle PartnerNetwork

    Oracle PartnerNetwork is a global commerce network of more than 19,500 companies who deliver innovative software solutions based on Oracle software. Through access to Oracle's premier products, education, technical services, marketing and sales support, the Oracle PartnerNetwork program provides partners with the resources they requisite to breathe successful in today's global economy. Oracle partners are able to proffer their customers leading-edge solutions backed by Oracle's position as the world's largest enterprise software company. Partners who are able to demonstrate superior product knowledge, technical expertise and a commitment to doing commerce with Oracle qualify for the Certified ally levels.

    About Voltaire

    Voltaire (NASDAQ: VOLT) designs and develops server and storage switching and software solutions that enable high-performance grid computing within the data center. Voltaire refers to its server and storage switching and software solutions as the Voltaire Grid Backbone(TM). Voltaire's products leverage InfiniBand technology and include director-class switches, multi-service switches, fixed-port configuration switches, Ethernet and Fibre Channel routers and standards-based driver and management software. Voltaire's solutions Have been sold to a wide orbit of discontinue customers including governmental, research and educational organizations, as well as enterprises in the manufacturing, oil and gas, entertainment, life sciences and fiscal services industries.

    Founded in 1997, Voltaire Ltd. is headquartered in Herzeliya, Israel, and has its U.S. headquarters in Billerica, Massachusetts. More information about Voltaire is available at or by calling 1-800-865-8247.

    Related Thomas Industry Update Thomas For Industry

    Oracle Database Appliance seen as gateway to Exadata | existent questions and Pass4sure dumps

    Oracle on Wednesday introduced a two-node Oracle Database 11g and Oracle existent Application Clusters (RAC) appliance that offers a lower cost entry point to Oracle Exadata, but it doesn’t include many of software features that give Exadata performance boosts.

    The 4U Intel-based machine, called the Oracle Database Appliance, includes two servers with built-in shared storage that allows discontinue users to build a two-node Oracle RAC infrastructure. List price starts at $50,000 for the hardware only, significantly lower than the six-figure starting point of a quarter-rack Exadata. Oracle suggested it would toil with databases up to 4 terabytes large. Specs include:

  • 24 total Intel Xeon processor cores
  • 192 gigabytes main memory
  • 12 terabytes raw disk storage; 292 gigabytes solid situation storage
  • Scalable licensing per processing core from 2 to 24 cores
  • That said, the Oracle Database Appliance doesn’t include the Oracle Exadata Storage Server Software features such as hybrid columnar compression and smart scan that the company claims Have given Exadata exponential query improvements.

    “Oracle definitely needed something fancy this,” said Alex Gorbachev, chief technology officer (CTO) of Pythian, an Oracle consulting company that took allotment in the beta program for the new appliance. “A lot of customers couldn’t justify the cost of Exadata but could disburse some of the features that an integrated appliance can provide.”

    It took Pythian “a pair hours” to set up the appliance, Have it running and accepting data on it. Gorbachev added that normally a new system setup requires expertise from various IT departments: systems, storage, networking and database, for example. Configuring this new appliance doesn’t require that.

    The appliance also comes with some management software that simplifies its operations and automates patching for example.

    “It noiseless requires some feeding and custody when it comes to tuning, but other than that it’s removing a lot of overhead.”

    That doesn’t involve it will liquidate the requisite for a DBA.

    Kerry Osborne, chief information officer (CIO) at Enkitec, another Oracle consultancy that had an early stare at the appliance, said discontinue users won’t derive the identical performance that they would derive out of Oracle Exadata. And they shouldn’t hope it either: The new product is a smaller, less-expensive version of Exadata, and as such it’s not going to Have as many features. Osborne said it’s also not something you can fling in the corner and hope to shun on its own.

    “Anyone that thinks you can shun any character of Oracle database without a knowledgeable human being is asking for trouble,” he said.

    Shyam Varan Nath, one of the founders of the Oracle Exadata Special Interest Group within the Independent Oracle Users Group, said that Oracle originally had a eighth-rack Exadata but discontinued it. He considered Oracle’s response to those smaller IT shops that said the quarter-rack Exadata was noiseless too expensive.

    “This could breathe a way to provide a similar box at lower price point without raising eyebrows on those already sold at higher price point as meant for great enterprises,” he said.

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