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000-612 exam Dumps Source : DB2 10 DBA for z/OS

Test Code : 000-612
Test denomination : DB2 10 DBA for z/OS
Vendor denomination : IBM
: 134 existent Questions

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IBM DB2 10 DBA for

IBM Brings lively-active Mirroring Into Db2 For i Database

April 24, 2019 Timothy Prickett Morgan

As a platform that's approaching forty years of deployment within agencies that can’t endure enough money downtime with their mission crucial methods – that’s counting the system/38 as smartly as the AS/400 and its follow-ons as fragment of the identical continuum – it is no astonish in any respect that IBM midrange techniques running RPG and COBOL had one of the crucial most subtle – and maybe the simplest software-centric – clustering software ever developed.

Concurrent with the launch of IBM i 7.4 this week, colossal Blue is rolling out a new sort of database clustering, which is known as Db2 mirror, it's intended for consumers who can't endure any casual of downtime in any respect in their transaction processing programs. Db2 reflect is a supplemental duty to the Db2 for i database and is just available on Power8 and Power9 techniques working IBM i 7.four. it's too just a tiny diverse from the unreasonable availability clustering tools offered by using Maxava, Syncsort (which ate imaginative and prescient solutions, which bought rivals iTera in 2006 and Lakeview technology in 2007), and DataMirror (which IBM purchased in 2007 after which sold to Rocket utility in 2012), and we're frankly attempting to toil out simply how diverse.

What they will let you know is that Db2 reflect creates what is referred to as an lively-lively database cluster across two machines. Which is discrete from the lively-passive setups that many enterprise-grade lofty availability clustering suggestions sequel exhaust of. within the former case, a cluster of two machines can subsist found to attain work, and often this toil can too subsist pleasing and infrequently the machines are configured in such a mode that transactions consign throughout a pair of machines at anything very closely approximating the equal time.

This Db2 replicate setup is just a tiny different from fault tolerant machines from days passed by from Tandem computer systems and Stratus technologies, however is clearly impressed by using it, and it is too impressed by database clustering technologies created by route of IBM, similar to Sysplex and Parallel Sysplex for the system z mainframe (which begun again in 1990) in addition to Oracle’s exact application Clusters (or RAC), which become derived from the TruCluster utility created with the aid of Digital gadget for its Tru64 Unix platform and is itself according to the VAXCluster application for the venerable VMS operating equipment and the RDB database for the VAX platform. Some concept tiny doubt comes from IBM’s own Db2 PureScale distributed database, which changed into a allotted, parallel database extension of IBM’s Db2 database for AIX and Linux, which scaled as much as 128 server nodes in a cluster, tons additional than the 32 mainframes in a Parallel Sysplex and the eight nodes in an Oracle RAC cluster. And let’s not forget that once IBM turned into having drawback scaling up its hardware with NUMA expertise within the mid-Nineties, it created DB2 Multisystem to created a shared nothing clustering setup an identical in some ways (but certainly not all) to Tandem and Stratus and Oracle Parallel Server, the predecessor to Oracle RAC. IBM’s PowerHA does disk-primarily based replication of information through mirrored storage arrays and unreasonable speed networks as opposed to database replication through remote journaling throughout a pair of servers, which has been fragment of the plumbing of OS/400, i5/OS, and IBM i because 1999.

there are lots of how you can dermis unreasonable availability clustering on the system stage and on the database degree, and not a soul of us has time to discover total of them, no rely how captivating it's. Suffice it to say, Db2 reflect is a new manner, which Steve Will, IBM i chief architect, tells us has been beneath construction for the previous three years and comes as a result of some key IBM i clients endure been pushing for lively-energetic database clustering on the platform to permit them to endure constant availability – or as lots as that you can anticipate to endure with two machines mirrored at the database degree within a unique datacenter.

“Db2 replicate isn't a journal-based mostly aspect,” Will explains. “In Db2 mirror, in the event you pair two programs collectively, every database operation occurs to the databases on each systems at the exact same time. So if you attain a desk update and your utility occurs to subsist pointing on the database, that database operation does not complete that update until it has gotten to each systems. this is now not a actual replication solution relish with PowerHA. the same thing would ensue with PowerHA, but you can should set aside that database into an independent auxiliary storage pool (iASP) that could ought to replicate to the other aspect. but then on the other side, that database wasn’t available for doing active toil against it. So there's a change perquisite here with Db2 mirror. They don't depend upon journals. that you can endure unbiased ASPs, that’s high-quality, but they don't rely upon unbiased ASPs. You don’t ought to access the database in any specific way, musty or new mode or something.”

Given how a noteworthy deal lively-energetic clustering goes on out there on this planet – you could glean it for windows Server and Linux techniques running most up to date relational databases, and there are some basically perspicacious parallel, dispensed databases impressed by using toil done by using hyperscalers such as Google, facebook, Microsoft, and Amazon that are available as open supply as well – you may endure thought that the Db2 for i database at the coronary heart of the IBM i platform might endure energetic-lively clustering long considering that. however there was one precise stickler in the means: the single-degree storage architecture of the device/38, the AS/400, and their comply with-ons.

With unique degree storage, the working gadget treats the means of main reminiscence, disk, and now glimmer storage as a unique continuum of addressable remembrance locality and abstracts the differences away so far as the database is worried. This architecture is in reality genius and exciting on earth, and to date simplest IBM has been in a position to sequel it work, and best in its midrange server line. This puts overhead on the device, nevertheless it has radically simplified programming, which is the hallmark of the AS/four hundred and its progeny. but unique stage storage gets in the manner just a tiny with active-active mirroring, since it is relish asking two different people partake the equal recollections and not going insane.

Unix, windows Server, and Linux active-active clustering technologies endure a a bit of less difficult time, in response to Will.

“a fragment of the intent is the how they cluster after which scale. These applied sciences definitely flip over the file gadget to the storage devices more than that we're capable of. one of the most factors, architecturally, that IBM i has not had energetic-lively before here is that they wanted to subsist capable of retain the one degree shop architecture but they couldn’t unfold it throughout assorted methods. They had to discover a mode to try this, where each and every gadget quiet had its personal address space as a result of that unique stage store is how they attain their file gadget. no one else has a file system relish that. so they don’t ought to worry about that. instead they endure hierarchical storage techniques, they requisite to disburse time doing locking, and total sorts of other stuff that they don’t. There’s nothing wrong with that – it’s just that’s their architecture. but they mandatory on the database layer became to coordinate every operation in order that each operation can subsist could subsist mirrored throughout the cluster. And the greater nodes you had, the much less doubtless it might subsist that they might subsist able to meet the performance pursuits of lots of their huge purchasers.”

and that's why Db2 reflect is limited to a pair of methods, as a minimum in its preliminary unlock. Which is first-class. valued clientele who requisite greater processing oomph can purchase methods with greater sockets and shared remembrance clustering the usage of NUMA innovations at the hardware level. and those who want more than that can exhaust Db2 Multisystem to partition their database tables and flee them across a cluster of up 32 machines working in parallel in a shared-nothing setup similar to these Tandem and Stratus machines. Db2 mirror isn't about scale, but constant availability, but it is enjoyable to contemplate a massive IBM i cluster with as much as 32 nodes operating Db2 Multisystem to scale up the efficiency of machines with the aid of scaling out the hardware and then the usage of Db2 reflect to endure another set of 32 nodes that makes it constantly attainable. The intelligence reels. . . .

Db2 replicate requires the new IBM i 7.four free up, which they record on elsewhere during this challenge, however shoppers aren't required to purchase it or installation it any longer than they endure got been required to purchase Db2 Multisystem for more than a decade. relish Db2 Multisystem, Db2 reflect is integrated into the platform and the database, however it is a separately licensed product – in this case, costing $20,000 per core. each IBM i 7.four and Db2 mirror may subsist available on June 21, which is the AS/four hundred’s thirty first birthday.

We could subsist drilling down into the architecture and getting some feedback on Db2 reflect from the folks selling HA utility in line with faraway journaling suggestions. What they are able to bellow presently is that Db2 reflect requires a unreasonable velocity Ethernet adapter linking both machines that helps the RDMA over Converged Ethernet (RoCE) protocol, which is a clone of the far off Direct remembrance entry strategies constructed into InfiniBand switching two decades ago. This permits machines to access each other’s memories remotely, however it does endure a distance restrict of about 1 kilometer. What this potential is that Db2 mirror can subsist respectable for constant availability within a datacenter, nevertheless it doesn’t attain jack for disaster healing throughout a far off datacenter, subsist it one working in the cloud by route of a carrier issuer or one operated by an organization itself.

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No influence discovered, are trying new keyword!3 light methods to Deal should you’re Intimidated by means of Your New crew Member Deborah Sweeney, CEO, by route of Fairygodboss now not everyone is excited when new hires subsist fragment of the office. It’s definitely a kindly deal ...

IBM’s Db2 in a Multi-Cloud World - The records Layer

within the age of desktop studying and AI in the cloud, everyone desires to attain more with their statistics. With over 70% of enterprises the exhaust of three or more clouds, it's crucial to withhold in intelligence the implications of where your records is stored and how it is managed. Leveraging a common database engine -- throughout clouds -- lets you focus your efforts to your purposes and never on idiosyncrasies of particular person cloud databases.

be a fragment of us for a are vital webinar, The statistics Layer: IBM’s Db2 in a Multi-Cloud World, where IBM utility architect Bowen Turetzky will talk about:

  • What multi-cloud capability for your information; multi-cloud by design vs multi-cloud by accident; and what a multi-cloud information layer seems like
  • The four key benefits of picking out IBM’s Db2 managed functions for a multi-cloud records layer solution
  • a route to leverage a typical information layer throughout cloud suppliers with regular equipment
  • Register for this unique webinar nowadays!

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    DB2 10 DBA for z/OS

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    Top 5 New DB2 10 for z/OS Features Aimed at SAP Applications

    As IBM draws ever nearer to announcing an availability date for DB2 10 for z/OS, the list of new features has solidified. This month’s article examines the top five features aimed specifically at SAP applications running under DB2 for z/OS.

    As IBM draws ever nearer to announcing an availability date for DB2 10 for z/OS, the list of new features has solidified and it’s viable for specific types of user to originate the process of evaluating just what will subsist of capitalize to them. SAP remains a vital strategic colleague for IBM, and DB2 10 has a large number of features aimed specifically at SAP applications running under DB2 for z/OS. In this month’s piece, we’ll examine my top five.

    64-Bit Exploitation

    In DB2 Version 8, IBM embarked upon a major project to transform DB2 into a 64-bit RDBMS, removing many of the addressability issues inherent in the previous 31-bit remembrance model. DB2 Version 8 too moved several key storage areas above the 2GB “bar” into the newly-addressable remembrance space, relieving some of the storage constraints and allowing more workload per DB2 subsystem. DB2 9 increased scalability by a further 10 percent to 15 percent by touching another set of storage areas above the bar, but even with those enhancements, most customers endure been limited to running a maximum of 400-500 concurrent active connections within each DB2 system. As a result, many DB2 data sharing customers were forced to exhaust more DB2 members than otherwise necessary in order to support their workloads. Although DB2’s industry-leading data sharing architecture minimizes the processing overheads, each additional member will repercussion overall performance and resource usage.

    Figure 1 below shows a typical scenario for a SAP environment. In this example, a data sharing group consisting of four DB2 members is used in order to support 1,600 concurrent threads from four SAP application servers.

    Typical SAP Data Sharing ConfigurationFigure 1 – Typical SAP Data Sharing Configuration

    In DB2 10, IBM has completed the bulk of the remaining toil in the 64-bit migration effort, with 80 percent to 90 percent of the remaining DB2 storage structures touching above the bar. This has enabled a spectacular enlarge in the number of threads that can subsist supported by a unique subsystem – most customers will subsist able to achieve 5-10 times the number of concurrent connections compared to DB2 9.

    This will allow many customers to reduce the number of DB2 members needed to support their workloads, resulting in net CPU and remembrance savings and improving application performance.

    Figure 2 below shows that the same 1,600 thread workload can subsist handled by just two DB2 subsystems, with significant scope for additional workload growth (initial SAP benchmarks testify 2,500 threads per DB2 system is sustainable).

    Potential DB2 10 SAP Data Sharing ConfigurationFigure 2 – Potential DB2 10 SAP Data Sharing Configuration

    DB2 Catalog Restructure

    The Catalog and Directory are some of the most vital components in any DB2 system. They hold a set of tables and internal structures that portray total of the metadata necessary for the subsystem to operate, and is used extensively by nearly every DB2 process from application programs to DBAs creating a new database.

    DB2 10 includes some primary enhancements to the Catalog, which will subsist very welcome to SAP users. These include:

  • Standard UTS format. In previous releases, the catalog used a non-standard internal storage format and maintained links between the various tables using special internal pointers. DB2 10 converts some key Catalog structures to exhaust the measure Universal Table Space Partition by Growth (UTS PBG) format introduced in DB2 9. This change allows measure online REORG processes to subsist used against the catalog, improving performance and availability compared to previous releases.
  • Contention between various processes needing to read/update the Catalog can cause significant operational disruption. As fragment of the same change, the converted Catalog tables endure been spread across many more table spaces than before, and row flat locking has been implemented to allow DB2 10 to support much higher levels of current access than was previously possible.

  • Maximum Catalog Size. Many DB2 subsystems endure to support hundreds of thousands of database objects. Each of these objects must subsist recorded in the DB2 Catalog and in some cases the 64GB restrict for certain components such as the SPT01 table space can subsist a scalability limitation. DB2 10 addresses the 64GB limitation on the SPT01 table space by touching some large columns into LOB (Large Object) columns. This makes exhaust of the inline LOB support added in DB2 10, making the Catalog tables more readable and allowing more packages to subsist supported within a unique DB2 system.
  • Anyone that has ever worked with SAP on DB2 for z/OS knows that it requires a very large number of DB2 objects to subsist created (and changed during SAP upgrades), and there can subsist catalog contention issues if several streams of DDL are running at the same time. The enhancements in DB2 10 swear to significantly reduce the frequency and repercussion of these issues.


    Any new release of DB2 is expected to deliver some performance benefits, but DB2 10 has the most comprehensive and easily accessible package of enhancements of any release in the past 20 years. Here are a few that are of especial interest to SAP users:

  • Internal code optimization. Parts of captious DB2 internal code (including DDF, RDS, Data Manager and Index Manager) endure been reworked in DB2 10 to reduce pathlength and better efficiency.  In addition, toil has been done to better CPU cache performance and acquire edge of the latest System z hardware instructions. Collectively, these enhancements will provide significant “out of the box” savings to SAP users as soon at the DB2 10 upgrade is complete.
  • Parallel Index INSERT. Many SAP workloads (such as Banking or Retail) involve hefty INSERT workloads. In such cases, the overheads of maintaining multiple indexes can subsist significant, and this can subsist the major factor in determining the overall response time and throughput for some major SAP traffic processes.
  • DB2 previously updated indexes sequentially but in DB2 10, it is able to overlap the I/O operations for index updates, reducing the elapsed time for these processes. In common with other parallel activities, reduced elapsed time is usually achieved at the cost of an enlarge in overall CPU time, but in this case, the overhead is very tiny and eligible for offload to a zIIP engine if one is available.

  • Safe Query Optimization. The DB2 optimizer often has to sequel educated guesses on the amount of data that will subsist filtered by a given predicate in an SQL statement. Enhancements to the optimizer in DB2 10 allow it to acquire into account the degree of self-confidence it has with these estimates, allowing it to select a slightly more expensive access path if it has significantly lower risk associated with it. This is just one of a number of optimizer enhancements, which will capitalize SAP queries in DB2 10.
  • MEMBER CLUSTER for UTS Tablespaces

    SAP has aggressively adopted the new Universal Tablespace Partition by Growth (UTS BPG) format introduced in DB2 9. This led to many productivity benefits, with SAP DBAs having to disburse less time manually managing space allocations for rapidly growing tables. However, UTS tablespaces did not previously support the MEMBER CLUSTER option, which can subsist very primary in a data sharing environment to reduce space-map contention during lofty INSERT activity. This meant that the impecunious DBAs had to transmute many tables back to traditional partitioned format (using unload/drop/ create/reload as there was no ALTER support to lag from UTS to partitioned).

    DB2 10 allows MEMBER CLUSTER to subsist used for UTS tablespaces, removing the requisite to lag back to the traditional partitioned format and saving a lot of DBA time in the process.

    SAP DSNZPARM Support

    SAP can subsist a demanding application, and comes with some very specific requirements for the route in which the supporting DB2 for z/OS system is installed and configured. Previously, this required the DB2 systems programmer to toil through a long list of DSNZPARM and other system settings to ensure that the system was configured according to SAP’s specifications.

    DB2 10 introduces a new install CLIST input member (called DSNTIDXB) which contains the SAP-recommended settings for DSNZPARMs, buffer pools and other configuration information. This will allow new SAP DB2 systems to subsist installed and configured much more rapidly than before.

    Useful Links

    » observe total Articles by Columnist Julian Stuhler

    CA expedites required DB2 10 upgrades for z/OS

    How collaboration apps foster digital transformation

    CA Technologies Delivers Same-Day support for IBM DB2 10 for z/OS

    ISLANDIA, N.Y., Oct. 26 /PRNewswire/ -- CA Technologies (Nasdaq: CA) today announced "Day One" support for IBM®  DB2 10® for z/OS across more than 30 products, including CA Database Management for DB2 for z/OS, CA ACF2™,  CA Top Secret® security management solutions and CA Easytrieve® application reporting. This support helps customers maximize the benefits of the new DB2 release and helps provide for the integrity and security of captious organizational assets.

    In addition, CA Mainframe Software Manager (CA MSM) eases the upgrade process and accelerates time-to-benefit as customers lag to DB2 10.

    "Same day support for IBM's DB2 10 is a demonstration of CA Technologies commitment to enabling customers to simplify the management of the mainframe and better operational efficiency," said Dayton Semerjian, general manager, Mainframe, CA Technologies. "Using their management products, customers can leverage greater agility to support traffic needs, while helping to drive down costs."

    Additionally, the upcoming r14.5 release of CA Database Management for DB2 for z/OS is being engineered to abet customers save time and money by addressing database and application performance issues, simplifying database administration, and improving backup and recovery efficiency.

    CA Technologies is too developing its new CA Mainframe Chorus for DB2 Database Management workspace to support DB2 10.

    CA Technologies recently announced same-day support for IBM's new, innovative zEnterprise model z196 hardware and z/OS 1.12, and continues to provide timely support for total System z hardware platforms and operating systems.

    CA Technologies is a charter member of the International DB2 Users Group (IDUG) and maintains active participation in IBM's vendor program for DB2, both of which abet the company withhold its portfolio of management solutions current with new releases.  CA Technologies involvement in IDUG too helps the company colleague with customers to better understand and meet their needs with innovative solutions relish CA Mainframe Chorus for DB2 Database Management.  

    More information on CA Technologies broad portfolio of mainframe software can subsist found at:

    (Logo: )

    (Logo: )

    About CA Technologies

    CA Technologies (NASDAQ: CA) is an IT management software and solutions company with expertise across total IT environments – from mainframe and distributed, to virtual and cloud. CA Technologies manages and secures IT environments and enables customers to deliver more elastic IT services. CA Technologies innovative products and services provide the insight and control essential for IT organizations to power traffic agility. The majority of the Global Fortune 500 relies on CA Technologies to manage evolving IT ecosystems. For additional information, visit CA Technologies at

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    Copyright © 2010 CA. total Rights Reserved. One CA Plaza, Islandia, N.Y. 11749. IBM and z/OS are trademarks of International traffic Machines Corporation in the United States, other countries, or both. total other trademarks, trade names, service marks, and logos referenced herein belong to their respective companies.

    Press contact:

    Michael Kornspan

    (631) 342-2463

    SOURCE CA Technologies

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