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C2090-317 DB2 11 System Administrator for z/OS

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C2090-317 exam Dumps Source : DB2 11 System Administrator for z/OS

Test Code : C2090-317
Test denomination : DB2 11 System Administrator for z/OS
Vendor denomination : IBM
: 60 true Questions

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IBM DB2 11 System Administrator

IBM Db2 question Optimization the employ of AI | killexams.com true Questions and Pass4sure dumps

In September 2018, IBM introduced a brand novel product, IBM Db2 AI for z/OS. This simulated intelligence engine monitors statistics access patterns from executing SQL statements, uses machine studying algorithms to pick out most effectual patterns and passes this suggestions to the Db2 question optimizer for employ by subsequent statements.

laptop researching on the IBM z Platform

In can too of 2018, IBM announced edition 1.2 of its desktop studying for z/OS (MLz) product. this is a hybrid zServer and cloud utility suite that ingests efficiency statistics, analyzes and builds fashions that picture the fitness status of a variety of warning signs, monitors them over time and provides precise-time scoring capabilities.

several aspects of this product offering are geared toward assisting a neighborhood of model builders and executives. as an example:

  • It helps numerous programming languages corresponding to Python, Scala and R. This makes it viable for records modelers and scientists to develop employ of a language with which they are usual;
  • A graphical consumer interface referred to as the visual model Builder publications mannequin builders devoid of requiring highly-technical programming capabilities;
  • It contains assorted dashboards for monitoring model consequences and scoring services, as well as controlling the gadget configuration.
  • This desktop gaining scholarship of suite become at the beginning aimed at zServer-primarily based analytics purposes. some of the first evident decisions become zSystem performance monitoring and tuning. system administration Facility (SMF) facts that are immediately generated by using the working device deliver the raw information for system resource consumption akin to central processor utilization, I/O processing, reminiscence paging and so forth. IBM MLz can compile and shop these information over time, and build and educate fashions of system behavior, ranking those behaviors, determine patterns not effectively foreseen with the aid of people, increase key efficiency indications (KPIs) and then feed the mannequin outcomes lower back into the materiel to strike materiel configuration alterations that can enhance performance.

    The subsequent step was to achieve in constrain this suite to investigate Db2 performance information. One answer, referred to as the IBM Db2 IT Operational Analytics (Db2 ITOA) respond template, applies the machine researching technology to Db2 operational statistics to gain an figuring out of Db2 subsystem fitness. it might probably dynamically build baselines for key performance indications, deliver a dashboard of these KPIs and provides operational staff actual-time perception into Db2 operations.

    while approved Db2 subsystem efficiency is a vital component in middling utility health and efficiency, IBM estimates that the DBA steer staff spends 25% or more of its time, " ... combating access path problems which trigger efficiency degradation and repair acquire an sequel on.". (See Reference 1).

    AI comes to Db2

    believe the plight of contemporary DBAs in a Db2 ambiance. In trendy IT world they should aid one or greater great information purposes, cloud software and database capabilities, utility installation and configuration, Db2 subsystem and application performance tuning, database definition and administration, catastrophe healing planning, and greater. query tuning has been in existence considering the fact that the origins of the database, and DBAs are usually tasked with this as neatly.

    The heart of query route analysis in Db2 is the Optimizer. It accepts SQL statements from applications, verifies authority to entry the records, experiences the places of the objects to live accessed and develops an inventory of candidate statistics entry paths. These entry paths can encompass indexes, desk scans, a number of desk relate methods and others. in the information warehouse and massive facts environments there are continually further choices accessible. One of those is the existence of abstract tables (occasionally called materialized question tables) that involve pre-summarized or aggregated records, hence allowing Db2 to steer limpid of re-aggregation processing. an extra altenative is the starjoin entry direction, standard within the facts warehouse, the Place the order of table joins is changed for performance reasons.

    The Optimizer then experiences the candidate access paths and chooses the access path, "with the lowest charge." freight during this context capacity a weighted summation of useful resource utilization together with CPU, I/O, reminiscence and other supplies. finally, the Optimizer takes the bottom cost entry path, stores it in reminiscence (and, optionally, within the Db2 listing) and starts off access direction execution.

    big statistics and facts warehouse operations now consist of application suites that allow the enterprise analyst to employ a graphical interface to construct and manipulate a miniature statistics mannequin of the information they wish to analyze. The applications then generate SQL statements in keeping with the clients’ requests.

    The problem for the DBA

    in order to achieve respectable analytics in your discrete facts outlets you need an outstanding knowing of the statistics requirements, an figuring out of the analytical services and algorithms accessible and a high-performance information infrastructure. regrettably, the quantity and location of facts sources is increasing (each in dimension and in geography), data sizes are growing to be, and functions proceed to proliferate in quantity and complexity. How should still IT managers advocate this atmosphere, mainly with probably the most skilled and mature body of workers nearing retirement?

    have in intellect too that a great allotment of decreasing the complete can freight of ownership of these methods is to salvage Db2 functions to hasten sooner and extra efficiently. This constantly translates into the usage of fewer CPU cycles, doing fewer I/Os and transporting less information across the community. on account that it's commonly intricate to even identify which functions could handicap from efficiency tuning, one strategy is to automate the detection and correction of tuning concerns. here's the Place desktop discovering and simulated intelligence can live used to first-rate effect.

    Db2 12 for z/OS and simulated Intelligence

    Db2 edition 12 on z/OS uses the desktop gaining scholarship of amenities outlined above to collect and redeem SQL question text and entry course particulars, as well as genuine performance-related worn assistance such as CPU time used, elapsed times and result set sizes. This providing, described as Db2 AI for z/OS, analyzes and stores the records in computer learning fashions, with the model evaluation effects then being scored and made obtainable to the Db2 Optimizer. The subsequent time a scored SQL observation is encountered, the Optimizer can then employ the mannequin scoring statistics as enter to its access route alternative algorithm.

    The influence should live a reduction in CPU consumption as the Optimizer makes employ of mannequin scoring enter to opt for more desirable access paths. This then lowers CPU fees and speeds software response times. a major talents is that the employ of AI software doesn't require the DBA to acquire facts science competencies or profound insights into question tuning methodologies. The Optimizer now chooses the exemplar access paths based no longer simplest on SQL question syntax and data distribution facts however on modelled and scored historic performance.

    This can live chiefly crucial if you store facts in numerous areas. for example, many analytical queries in opposition t massive data require concurrent entry to unavoidable records warehouse tables. These tables are frequently referred to as dimension tables, and they contain the information aspects continually used to manage subsetting and aggregation. for instance, in a retail environment accept as upright with a table known as StoreLocation that enumerates each advocate and its vicinity code. Queries towards shop earnings statistics may want to combination or summarize earnings via vicinity; therefore, the StoreLocation table will live used by some expansive statistics queries. during this atmosphere it's regular to consume the dimension tables and copy them consistently to the expansive statistics utility. in the IBM world this district is the IBM Db2 Analytics Accelerator (IDAA).

    Now mediate about SQL queries from each operational purposes, statistics warehouse users and great facts company analysts. From Db2's perspective, outright these queries are equal, and are forwarded to the Optimizer. besides the fact that children, in the case of operational queries and warehouse queries they should definitely live directed to access the StoreLocation table in the warehouse. even so, the question from the enterprise analyst against massive facts tables should probably access the reproduction of the table there. This consequences in a proliferations of expertise access paths, and greater drudgery for the Optimizer. thankfully, Db2 AI for z/OS can give the Optimizer the suggestions it should develop sensible access path selections.

    how it Works

    The sequence of hobbies in Db2 AI for z/OS (See Reference 2) is often birthright here:

  • throughout a bind, rebind, prepare or clarify operation, an SQL statement is passed to the Optimizer;
  • The Optimizer chooses the statistics entry direction; because the altenative is made, Db2 AI captures the SQL syntax, access direction alternative and question efficiency data (CPU used, and so forth.) and passes it to a "gaining scholarship of task";
  • The getting to know project, which can live completed on a zIIP processor (a non-conventional-goal CPU core that doesn't component into software licensing costs), interfaces with the computer learning utility (MLz mannequin functions) to shop this counsel in a model;
  • because the quantity of facts in each model grows, the MLz Scoring carrier (which too can live achieved on a zIIP processor) analyzes the model information and rankings the habits;
  • all the way through the subsequent bind, rebind, achieve together or clarify, the Optimizer now has access to the scoring for SQL models, and makes acceptable changes to entry course decisions.
  • There are additionally quite a few person interfaces that supply the administrator visibility to the reputation of the collected SQL observation efficiency statistics and mannequin scoring.

    abstract

    IBM's computing device gaining scholarship of for zOS (MLz) providing is being used to splendid repercussion in Db2 edition 12 to enhance the performance of analytical queries in addition to operational queries and their associated functions. This requires management consideration, as you need to assess that your enterprise is prepared to consume these ML and AI conclusions. How will you measure the expenses and advantages of the usage of computing device researching? Which IT steer team of workers must live tasked to reviewing the sequel of model scoring, and perhaps approving (or overriding) the effects? How will you overview and justify the assumptions that the software makes about access route decisions?

    In different phrases, how smartly achieve you know your statistics, its distribution, its integrity and your existing and proposed entry paths? this may verify where the DBAs spend their time in supporting analytics and operational application performance.

    # # #

    Reference 1

    John Campbell, IBM Db2 unique EngineerFrom "IBM Db2 AI for z/OS: increase IBM Db2 application efficiency with desktop discovering"https://www.worldofdb2.com/pursuits/ibm-db2-ai-for-z-os-increase-ibm-db2-software-performance-with-ma

    Reference 2

    Db2 AI for z/OShttps://www.ibm.com/support/knowledgecenter/en/SSGKMA_1.1.0/src/ai/ai_home.html

    See outright articles by way of Lockwood Lyon


    speakme to IBM DB2 with Golang | killexams.com true Questions and Pass4sure dumps

    In my fresh assignment, I need to discuss with DB2 database to assemble some leisure API capabilities.

    first of all, they want a DB2 driver for golang software to talk to DB2. There are some previous expertise accomplished via people. although it became either now not actively maintained or doesn’t steer on outright of the main systems. I determined to employ the typical ODBC driver to communicate with the DB2.

    Setup ODBC/CLI for DB2

    down load the DB2 ODBC/CLI driver from IBM web page.

    Then simply untar/unzip it to a directory.

    Configure DB2 ODBC/CLI on home windows

    My evolution and checking out atmosphere is on home windows. I setup the db2 driver on windows first.

  • trade directory to where you unzip the motive force
  • As a administrator, hasten bin\db2cli set up -setup
  • find out the Place is the db2cli.ini create with the aid of running bin\db2cli validate | findstr "typical App"
  • commonplace App records path : C:\ProgramData\IBM\DB2\Some_Directory_Namedb2cli.ini route : <normal App records course>\cfg\db2cli.ini

    four. Edit the db2cli.ini file the Place you recognized from last step

    [MyDB]Protocol=TCPIPHostname=192.168.xxx.xxxPort=50000Database=mydbCurrentSchema=myschema

    5. Register the DB into ODBC as a gadget plane DB

    bin\db2cli registerdsn -add -dsn MyDB -equipment

    At this stage they are able to consult with the DB2 with ODBC on home windows.

    Configure DB2 ODBC/CLI on Linux

    My Linux is Redhat.

  • If ODBC materiel is not installation. set up it. as an example,rpm -iv unixODBC-2.three.1–11.el7.x86_64.rpm
  • Untar the DB2 ODBC/CLI driver file downloaded.
  • update materiel ODBC drivers with the aid of updating the /etc/odbcinst.ini
  • [DB2]Description=DB2 DriverDriver=#target_dir/clidriver/lib/libdb2o.sofileusage=1dontdlclose=1

    exchange #targe_dir with the entire course identify of the Place you untar the drivers.

    four. supersede system /and so on/odbc.ini file

    [MyDB]Protocol=TCPIPHostname=192.168.xxx.xxxPort=50000Database=mydbCurrentSchema=myschemaDriver=#target_dir/clidriver/lib/libdb2o.so

    5. too supersede the #target_dir/clidriver/clidriver/cfg/db2cli.ini with the identical content material as shown above. i am not unavoidable why the ODBC CLI driver appears on the two ini data.

    So we're ready for the ODBC setup for each windows and Linux.

    Use ODBC to connect with DB2

    The connection to DB2 becomes straight forward. employ the ODBC driver,

    package restServer import ("fmt""os""regexp" _ "github.com/alexbrainman/odbc""github.com/jmoiron/sqlx""github.com/sirupsen/logrus") func DB2Connect() (*sqlx.DB, error) dbName := os.Getenv("MY_DBNAME")uid := os.Getenv("MY_USERNAME")password := os.Getenv("MY_CREDENTIAL") //some decryption code is overlooked here... db, err := sqlx.Open("odbc", fmt.Sprintf("DSN=%s;uid=%s;pwd=%s", dbName, uid, password))if err != nil recur nil, err recur db, nil

    we will then employ outright the routine golang DB programming stuff. i am the employ of sqlx to operate question and execution, and squirrel to contruct SQL observation.

    Notes: They couldn't hasten cross compiling. different platform must live compiled one after the other.


    IBM DB2 relational DBMS overview | killexams.com true Questions and Pass4sure dumps

    IBM DB2 is a relational DBMS with built-in advocate for a number of NoSQL capabilities, including XML, graph redeem and Java Script demur Notation (JSON). Used by companies of outright sizes, DB2 offers an information platform for both transactional and analytical operations in addition to continuous availability of statistics to preserve transactional workflows and analytics working correctly.

    OSes DB2 helps

    DB2 is accessible for 3 fundamental platforms:

  • computing device, with DB2 for Linux, Unix and windows (LUW)
  • Midrange, with DB2 for iSeries
  • Mainframe, with DB2 for z/OS, the predominant mainframe relational DBMS
  • DB2 helps these Unix versions: AIX, Solaris and HP-UX; Linux editions involve red Hat, SUSE, Ubuntu and Linux on pSeries and gadget z.

    DB2 for i comes pre-put in on the iSeries server and, as such, won't live addressed birthright here.

    DB2 points

    The present edition of DB2 for LUW is eleven.1, launched in 2d quarter 2016. This release specializes in advancements to BLU Acceleration and pureScale functionality.

    BLU Acceleration, brought to DB2 in version 10.5, offers a column store ability, as well as technological performance boosts for actionable compression, exploitation of the solitary instruction varied statistics (SIMD) capabilities of modern CPUs, and records skipping expertise.

    For DB2 11, BLU Acceleration may too live deployed throughout a hugely parallel processing (MPP) network cluster structure. BLU Acceleration can live utilized in database partitioning facility environments for MPP scale out, that can enhance query performance for giant partitioned functions. moreover, this version improves in-memory capabilities for column-geared up tables and integration with IBM statistics Server manager to investigate workloads and investigate no matter if they can handicap from column-oriented tables.

    DB2 for LUW eleven too provides assist for top Availability catastrophe healing, or HADR, in pureScale clustered DB2 databases. records can too live mirrored from a major pureScale database cluster to a 2nd local or faraway standby cluster, thereby enhancing recoverability. An further evolution for pureScale is the start of online repair pack update guide, permitting users to celebrate DB2 11.1 fix packs to particular person members operating in a pureScale cluster with no need to consume the total cluster offline.

    On the security entrance, DB2 eleven allows for the employ of trade key management programs for storing endemic encryption master keys. The DB2 superior healing role is a bundle of database backup, recovery and statistics extraction materiel that may advocate clients enhance availability, mitigate chance and optimize administrative initiatives.

    The latest edition of DB2 for z/OS is 11, which changed into launched in October 2013. Highlights of DB2 eleven for z/OS involve performance and availability enhancements, stronger analytics capabilities, application compatibility features, more suitable entry direction stability and archive transparency. IBM additionally presents the IBM DB2 Analytics Accelerator, which is an add-on to DB2 for z/OS for rushing up analytical queries.

    DB2 for LUW requires two configuration data: the Database supervisor configuration file containing configuration parameters for a complete instance, and Database configuration information for each and every database.      

    DB2 for LUW is too embedded into IBM's database PureData appliance, enabling turnkey implementation of DB2 devoid of the time-ingesting setting up and configuration required of a routine DBMS installation.

    DB2 for z/OS is installed as a subsystem with accessories for database functions, lock management, distributed request processing and connecting to different mainframe brokers. The subsystem is configured with a collection of parameters referred to as the DSNZPARMs.

    DB2 offerings

    As of edition eleven, IBM offers eight variants of DB2 for LUW:

  • DB2 advanced commercial enterprise Server edition presents the maximum plane of functionality attainable for DB2 and is pertinent for transactional, warehouse and combined workloads. This edition has no processor, recollection or database measurement limits and springs with a complete complement of warehouse equipment, InfoSphere Optim materiel and IBM facts Studio.
  • DB2 superior Workgroup Server edition is similar to the DB2 advanced enterprise Server edition, apart from it places limits on processor, reminiscence and database measurement. This version is choicest-applicable for deployment in a departmental, workgroup or midsize company atmosphere.
  • DB2 trade Server edition is appropriate for transactional and combined workloads, and relish the advanced version, it has no processor, recollection or database measurement limits. besides the fact that children, in contrast to the superior version, it lacks column-equipped tables, in-reminiscence database, records compression, workload administration, replication and dispensed partitioning capabilities.
  • DB2 Workgroup Server edition is primarily for transactional workloads. This edition areas limits on processor, recollection and database dimension, which makes it most advantageous for medium-size workloads.
  • DB2 Direct superior edition is a edition of DB2 advanced Workgroup Server version for digital birth.
  • DB2 Direct regular edition is a digital version of DB2 Workgroup Server version for digital delivery.
  • DB2 for great records combines the relational engine of DB2 with IBM's BigInsights platform for massive statistics and analytics. This version is designed to raise portability of information across relational techniques and Hadoop.
  • DB2 Developer version is designed for a solitary software developer to design, construct and prototype functions for deployment on any of the IBM counsel administration customer or server platforms.
  • moreover, DB2 specific-C version, an entry-level edition of the DB2 records server for the developer and associate group, is attainable at no cost. It can live achieve in on actual or digital techniques with any amount of CPU and RAM, and is optimized to sear up to a optimum of two cores and 16 GB of reminiscence.

    DB2 information varieties

    DB2 supports the regular numeric, character, and date/time information forms well as LOBs, XML and user-described kinds. JSON is supported by means of DB2 JSON, a driver-based mostly solution that provides JSON statistics representation inside the context of an RDBMS.

    DB2 benchmarks

    IBM has posted numerous TPC benchmarks for DB2 on outright systems supported. IBM sells DB2 for LUW direct, via trade companions, on-line and thru utility selected licensing, which makes it viable for providers corresponding to SAP to license and promote DB2 relational DBMS as a allotment of their applications.

    Pricing is according to processor expense unit (PVU), which is a unit of measure that IBM makes employ of to license its software. IBM applies a PVU weigh to every core of a processor. The pricing is then in response to the number of PVUs for the processor and via the number of processors made purchasable to DB2.

    The developer edition is licensed with the aid of approved user, no longer PVU. There are additional nuances to pricing and licensing in keeping with DB2 versions that aren't coated here.

    DB2 licensing

    The license cost for DB2 contains first-year steer and subscription, entitling the proprietor to contact IBM for advocate in addition to to download fixes and enhancements to future models/releases of the product.

    DB2 for z/OS relational DBMS is offered directly via IBM and is licensed as a monthly license can freight (MLC) product. There are a lot of metrics obtainable for pricing MLC items. A 90-day free visitation download is accessible from the IBM site.

    concerning the authorCraig S. Mullins is a scholarship management strategist, researcher, consultant and author with more than 30 years of adventure in outright aspects of database systems construction. he's president and fundamental consultant of Mullins Consulting Inc. and publisher/editor of TheDatabaseSite.com. e mail him at craig@craigmullins.com.

    e mail us at editor@searchdatamanagement.com and succeed us on Twitter: @sDataManagement.

    this article became updated in September 2016.


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    DB2 11 System Administrator for z/OS

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    Connecting DSX — RStudio to on-prem DB2 for z/OS database | killexams.com true questions and Pass4sure dumps

    IBM Data Science experience provides an environment that brings together outright of a data scientist’s tools into one location. It includes the most approved Open Source tools and IBM value-add functionality with integration of community and gregarious features to develop data scientists more successful.

    A wide variety of cloud data sources are easily connected to DSX, or a user could upload data from DB2 on z/OS (by creating a copy) into the environment. However, the capacity to access to data in-place on the system of record, has much appeal.

    In this guide, I will profile the steps needed to configure DSX to access an on-prem DB2 for z/OS database using JDBC and provide the capacity to utilize RStudio to effect advanced analytics operations on this data.

    Here is an profile of the steps they will rush through in the steer to set up the DSX environment for DB2 for z/OS connectivity:

  • Examine the RStudio interface.
  • Identify the JDBC driver files and configure the initial environment with RStudio.
  • If required, setup a Bluemix Secure Gateway.
  • Use the RJDBC package to connect with a DB2 for z/OS database, and hasten a query.
  • Data Science Experience — RStudio Interface

    (Note: The screenshots in this tutorial are from a Mac OSX environment running Firefox. If you are running from Windows or Linux, there may some differences in the appearance of the endemic dialogs and browser interfaces.)

    Once setup with your account, click on the DSX Logo at the top of your screen, and this will consume you to the main Community page. Once there, if you click the far left drop-down menu, you will view your project options, including RStudio. Click on the the RStudio option, and this will open up your RStudio instance.

    If you acquire opened DSX RStudio before, the instance opened will acquire retained any history or enviroment settings that you had saved/autosaved from before. If you are intimate with RStudio and acquire used a endemic version of RStudio on Windows/Mac OSX, it will perceive exactly the same. The only contrast is that the underlying infrastucture is running in a Bluemix virtual machine. There is limited access to the underlying operating system, but they can access the filesystem to upload the JDBC driver and license file and configure the connection for DB2 for z/OS.

    The RStudio interface should perceive similar to what is shown below……

    (For a complete steer to using RStudio, gladden view the documentation linked to in the ‘Help’ Section)

    Next, they will verify that the revise packages are installed/loaded that enable JDBC access to their on-prem database.

    In the bottom birthright panel of the RStudio desktop you will view the ‘Packages’ tab, and within that is an ‘Install’ tab. If you click “Install”, you will salvage a dialog box that allows you to load the required packages from the CRAN repo. You will need to install ‘RJDBC’. If the ‘Install dependencies’ box is checked, you will too live installing ‘rJava’ and ‘DBI’ (which load automatically). Once you install these packages, you should view them in the User Library. If they are unchecked, gladden check them, and they will live enabled in the environment.

    Next, they will need to upload the appropriate DB2 for z/OS data server driver .jar files to the DSX environment. The files they will need are: db2jcc.jar and db2jcc_license_cisuz.jar

    If you already acquire a licensed version of DB2 Connect installed, these driver files are already available on one of your existing client environment setups. request your DB2 system administrator for the location of these files in your client environment.

    This steer is based on DB2Connect Version 11.1 for Linux, Unix and Windows (client) and DB2 for z/OS Unlimited Edition (server). If you are not currently licensed for DB2Connect, view the Appendix at the abide of this steer for instructions on how to obtain the revise data server drivers and license files that are required.

    From the RStudio desktop (shown above), rush to the lower birthright panel again, to the “Files” section. Then, click “Upload” and you will salvage a dialog box that allows you to browse your local file system to upload the driver files. For both db2jcc.jar and db2jcc_license_cisuz.jar, upload these to the current directory of your DSX/RStudio environment.

    Connecting to the z Server over TCPIP — Secure Gateway

    With the JDBC driver files in place, they now need to configure access to the server which is running the DB2 for z/OS instance. The assumption for most IBM customers is that their target z server is running on a secure internal network, which is accessed externally through a VPN or from an internal private network access point. If this is the case, you will too need to set up a Bluemix Secure Gateway, that will allow the Bluemix/DSX cloud app to access your z server through a firewall, using the selfsame VPN/internal network acces point that you employ for other client connections from a desktop.

    For more common information on Bluemix Secure Gateways, gladden rush to: https://console.ng.bluemix.net/docs/services/SecureGateway/secure_gateway.html

    If you achieve not need to configure a Secure Gateway, you can skip to the “Connecting to DB2/zOS with JDBC” section.

    To configure the secure gateway, gladden rush to https://console.ng.bluemix.net/dashboard/services/, log in to Bluemix with the selfsame credentials you are using for DSX, and then employ the drop-down menu on the left to rush to the ‘Services’ and then ‘Dashboard’ menu.

    Once within the Services dashboard, click the “Create Service +” button.

    Next, they will rush to “Integrate” and then elect the “Secure Gateway” service from the menu.

    Leave the service “Unbound” and click “Create”.

    And, then “+ Add Gateway’

    Choose a denomination for your gateway, uncheck both of the boxes listed, and then click “Add Gateway”.

    Now, they can setup the destination details, and the client. Click on the gateway.

    Then click on “+ Add Destination”.

    Choose “On-Premises” and click Next.

    On the next screen add your host name/IP , and the DB Port of your DB2z Subsystem. Click ‘Next’

    Then, select TCP protocol on the next screen, and click “Next” again.

    The next screen setting is related to server side authentication. If you typically connect with just a user and password, then elect “None”. If you are not positive whether or not your server requires additional authentication, request your System Administrator, and you can change this later. Click ‘Next’.

    You can skip over the next setting, unless you want to privatize the IP address and port or your connection. Click ‘Next’.

    To complete the destination settings for the back-end server, they just need to give a denomination for their connection. elect a denomination for your destination that describes the DB2 Subsystem you are connecting to, and then click “Finish”.

    Now let’s install the client for their secure gateway. elect “+ Add Clients”

    Choose your preferred way of hosting the gateway client. For this demonstration, they will live using IBM Installer — Mac OSX version on a laptop that has a VPN connection to access an on-prem z server. The details for different OS installs and Using Docker or IBM DataPower are covered in detail in the online instructions. For specific install details, view the “Bluemix Documentation” link.

    At this time, copy the Gateway ID, for input later into the gateway client command-line interface.

    After Downloading the client, double-clicking the image, you might acquire to rush to your ‘Finder’ to view the mount point for the image.

    Click on the mount-point and then drag the ‘ibm’ folder into the Applications Folder.

    Now, they can rush into the ‘IBM’ folder within Applicatons, and double-click to hasten the segw.command to open the CLI for the gateway.

    Enter the gateway ID you copied earlier, and then enter ‘none’ for the security token.

    Next, note the web address of the gateway interface — localhost:9003/dashboard  Enter that web address in your web browser.

    Below, they view the gateway web UI. You can view outright the details of your secure gateway from this interface. There is one more setting, for the access control list. gladden click “Access Control List”, and then enter your destination hostname/IP and port once again.

    Below, once you acquire added the host/IP and port, you can close the browser window, or minimize it.

    We are almost done. The Secure Gateway config is complete.

    Now they will recur to the main Secure Gateway dashboard to copy the cloud hostname/port for the gateway. It will live used for the JDBC connection string in DSX/RStudio. From the Services Dashboard, click on the gateway you created.

    On this screen, click on the ‘settings gear’ of the destination server connection details. A dialog box will open.

    Copy the ‘Cloud Host : Port’ address to employ in your JDBC connection in DSX/RStudio.

    Return to the RStudio desktop, and they can setup the JDBC driver and hasten a query.

    Connecting to DB2/zOS with JDBC

    In the RStudio desktop, they are now ready to enter the JDBC commands at the console prompt to setup the connection to their DB2 for z/OS database. develop positive the RJDBC, DBI, and rJava packages acquire loaded.

    Also, at this time, develop positive you are running any VPN connection that is normally required to access your backend system from a desktop client.

    Enter the following commands in the RStudio console, noting the results you salvage for the classpath display:

    .jinit()  .jclassPath()  .jaddClassPath("/home/rstudio/db2jcc_license_cisuz.jar") .jclassPath() drv <- JDBC("com.ibm.db2.jcc.DB2Driver","/home <br> /rstudio/db2jcc.jar") .jclassPath()

    (* note the addition of the license file….its position in the classpath is considerable *)


    IBM Db2 Query Optimization Using AI | killexams.com true questions and Pass4sure dumps

    In September 2018, IBM announced a novel product, IBM Db2 AI for z/OS. This simulated intelligence engine monitors data access patterns from executing SQL statements, uses machine learning algorithms to determine on optimal patterns and passes this information to the Db2 query optimizer for employ by subsequent statements.

    Machine Learning on the IBM z Platform

    In May of 2018, IBM announced version 1.2 of its Machine Learning for z/OS (MLz) product. This is a hybrid zServer and cloud software suite that ingests performance data, analyzes and builds models that picture the health status of various indicators, monitors them over time and provides real-time scoring capabilities.

    Several features of this product offering are aimed at supporting a community of model developers and managers. For example:

  • It supports multiple programming languages such as Python, Scala and R. This allows data modelers and scientists to employ a language with which they are familiar;
  • A graphical user interface called the Visual Model Builder guides model developers without requiring highly-technical programming skills;
  • It includes multiple dashboards for monitoring model results and scoring services, as well as controlling the system configuration.
  • This machine learning suite was initially aimed at zServer-based analytics applications. One of the first obvious choices was zSystem performance monitoring and tuning. System Management Facility (SMF) records that are automatically generated by the operating system provide the raw data for system resource consumption such as central processor usage, I/O processing, recollection paging and the like. IBM MLz can collect and store these data over time, and build and train models of system behavior, score those behaviors, identify patterns not readily foreseen by humans, develop key performance indicators (KPIs) and then feed the model results back into the system to strike system configuration changes that can improve performance.

    The next step was to implement this suite to anatomize Db2 performance data. One solution, called the IBM Db2 IT Operational Analytics (Db2 ITOA) solution template, applies the machine learning technology to Db2 operational data to gain an understanding of Db2 subsystem health. It can dynamically build baselines for key performance indicators, provide a dashboard of these KPIs and give operational staff real-time insight into Db2 operations.

    While common Db2 subsystem performance is an considerable factor in overall application health and performance, IBM estimates that the DBA advocate staff spends 25% or more of its time, " ... fighting access path problems which antecedent performance degradation and service impact.". (See Reference 1).

    AI Comes to Db2

    Consider the plight of modern DBAs in a Db2 environment. In today's IT world they must advocate one or more expansive data applications, cloud application and database services, software installation and configuration, Db2 subsystem and application performance tuning, database definition and management, cataclysm recovery planning, and more. Query tuning has been in existence since the origins of the database, and DBAs are usually tasked with this as well.

    The heart of query path analysis in Db2 is the Optimizer. It accepts SQL statements from applications, verifies authority to access the data, reviews the locations of the objects to live accessed and develops a list of candidate data access paths. These access paths can involve indexes, table scans, various table relate methods and others. In the data warehouse and expansive data environments there are usually additional choices available. One of these is the existence of summary tables (sometimes called materialized query tables) that contain pre-summarized or aggregated data, thus allowing Db2 to avoid re-aggregation processing. Another option is the starjoin access path, common in the data warehouse, where the order of table joins is changed for performance reasons.

    The Optimizer then reviews the candidate access paths and chooses the access path, "with the lowest cost." Cost in this context means a weighted summation of resource usage including CPU, I/O, recollection and other resources. Finally, the Optimizer takes the lowest cost access path, stores it in recollection (and, optionally, in the Db2 Directory) and begins access path execution.

    Big data and data warehouse operations now involve software suites that allow the trade analyst to employ a graphical interface to build and manipulate a miniature data model of the data they wish to analyze. The packages then generate SQL statements based on the users’ requests.

    The Problem for the DBA

    In order to achieve apt analytics on your multiple data stores you need a apt understanding of the data requirements, an understanding of the analytical functions and algorithms available and a high-performance data infrastructure. Regrettably, the number and location of data sources is expanding (both in size and in geography), data sizes are growing, and applications continue to proliferate in number and complexity. How should IT managers advocate this environment, especially with the most experienced and mature staff nearing retirement?

    Understand too that a great allotment of reducing the total cost of ownership of these systems is to salvage Db2 applications to hasten faster and more efficiently. This usually translates into using fewer CPU cycles, doing fewer I/Os and transporting less data across the network. Since it is often difficult to even identify which applications could capitalize from performance tuning, one approach is to automate the detection and correction of tuning issues. This is where machine learning and simulated intelligence can live used to much effect.

    Db2 12 for z/OS and simulated Intelligence

    Db2 version 12 on z/OS uses the machine learning facilities mentioned above to gather and store SQL query text and access path details, as well as actual performance-related historical information such as CPU time used, elapsed times and result set sizes. This offering, described as Db2 AI for z/OS, analyzes and stores the data in machine learning models, with the model analysis results then being scored and made available to the Db2 Optimizer. The next time a scored SQL statement is encountered, the Optimizer can then employ the model scoring data as input to its access path altenative algorithm.

    The result should live a reduction in CPU consumption as the Optimizer uses model scoring input to elect better access paths. This then lowers CPU costs and speeds application response times. A significant handicap is that using AI software does not require the DBA to acquire data science skills or profound insights into query tuning methodologies. The Optimizer now chooses the best access paths based not only on SQL query syntax and data distribution statistics but on modelled and scored historical performance.

    This can live particularly considerable if you store data in multiple places. For example, many analytical queries against expansive data require concurrent access to unavoidable data warehouse tables. These tables are commonly called dimension tables, and they contain the data elements usually used to control subsetting and aggregation. For example, in a retail environment account a table called StoreLocation that enumerates every store and its location code. Queries against store sales data may wish to aggregate or summarize sales by Location; hence, the StoreLocation table will live used by some expansive data queries. In this environment it is common to consume the dimension tables and copy them regularly to the expansive data application. In the IBM world this location is the IBM Db2 Analytics Accelerator (IDAA).

    Now mediate about SQL queries from both operational applications, data warehouse users and expansive data trade analysts. From Db2's perspective, outright these queries are equal, and are forwarded to the Optimizer. However, in the case of operational queries and warehouse queries they should most likely live directed to access the StoreLocation table in the warehouse. On the other hand, the query from the trade analyst against expansive data tables should probably access the copy of the table there. This results in a proliferations of potential access paths, and more drudgery for the Optimizer. Luckily, Db2 AI for z/OS can provide the Optimizer the information it needs to develop smart access path selections.

    How It Works

    The sequence of events in Db2 AI for z/OS (See Reference 2) is generally the following:

  • During a bind, rebind, prepare or define operation, an SQL statement is passed to the Optimizer;
  • The Optimizer chooses the data access path; as the altenative is made, Db2 AI captures the SQL syntax, access path altenative and query performance statistics (CPU used, etc.) and passes it to a "learning task";
  • The learning task, which can live executed on a zIIP processor (a non-general-purpose CPU core that does not factor into software licensing charges), interfaces with the machine learning software (MLz Model Services) to store this information in a model;
  • As the amount of data in each model grows, the MLz Scoring Service (which too can live executed on a zIIP processor) analyzes the model data and scores the behavior;
  • During the next bind, rebind, prepare or explain, the Optimizer now has access to the scoring for SQL models, and makes appropriate changes to access path choices.
  • There are too various user interfaces that give the administrator visibility to the status of the accumulated SQL statement performance data and model scoring.

    Summary

    IBM's machine learning for zOS (MLz) offering is being used to much sequel in Db2 version 12 to improve the performance of analytical queries as well as operational queries and their associated applications. This requires management attention, as you must verify that your trade is prepared to consume these ML and AI conclusions. How will you measure the costs and benefits of using machine learning? Which IT advocate staff must live tasked to reviewing the result of model scoring, and perhaps approving (or overriding) the results? How will you review and justify the assumptions that the software makes about access path choices?

    In other words, how well achieve you know your data, its distribution, its integrity and your current and proposed access paths? This will determine where the DBAs spend their time in supporting analytics and operational application performance.

    # # #

    Reference 1

    John Campbell, IBM Db2 Distinguished EngineerFrom "IBM Db2 AI for z/OS: Boost IBM Db2 application performance with machine learning"https://www.worldofdb2.com/events/ibm-db2-ai-for-z-os-boost-ibm-db2-application-performance-with-ma

    Reference 2

    Db2 AI for z/OShttps://www.ibm.com/support/knowledgecenter/en/SSGKMA_1.1.0/src/ai/ai_home.html

    See outright articles by Lockwood Lyon


    IBM DB2 relational DBMS overview | killexams.com true questions and Pass4sure dumps

    IBM DB2 is a relational DBMS with integrated advocate for a number of NoSQL capabilities, including XML, graph store and Java Script demur Notation (JSON). Used by organizations of outright sizes, DB2 provides a data platform for both transactional and analytical operations as well as continuous availability of data to advocate transactional workflows and analytics operating efficiently.

    OSes DB2 supports

    DB2 is available for three primary platforms:

  • Workstation, with DB2 for Linux, Unix and Windows (LUW)
  • Midrange, with DB2 for iSeries
  • Mainframe, with DB2 for z/OS, the predominant mainframe relational DBMS
  • DB2 supports these Unix variants: AIX, Solaris and HP-UX; Linux variants involve Red Hat, SUSE, Ubuntu and Linux on pSeries and System z.

    DB2 for i comes pre-installed on the iSeries server and, as such, won't live addressed here.

    DB2 features

    The current version of DB2 for LUW is 11.1, released in second quarter 2016. This release focuses on improvements to BLU Acceleration and pureScale functionality.

    BLU Acceleration, added to DB2 in Version 10.5, provides a column store capability, as well as technological performance boosts for actionable compression, exploitation of the solitary instruction multiple data (SIMD) capabilities of modern CPUs, and data skipping technology.

    For DB2 11, BLU Acceleration can live deployed across a massively parallel processing (MPP) network cluster architecture. BLU Acceleration can live used in database partitioning facility environments for MPP scale out, which can improve query performance for great partitioned applications. Additionally, this version improves in-memory capabilities for column-organized tables and integration with IBM Data Server Manager to anatomize workloads and determine whether they can capitalize from column-oriented tables.

    DB2 for LUW 11 too adds advocate for elevated Availability cataclysm Recovery, or HADR, in pureScale clustered DB2 databases. Data can live mirrored from a primary pureScale database cluster to a second local or remote standby cluster, thereby improving recoverability. An additional improvement for pureScale is the delivery of online fix pack update support, allowing users to apply DB2 11.1 fix packs to individual members running in a pureScale cluster without having to consume the entire cluster offline.

    On the security front, DB2 11 enables the employ of enterprise key management systems for storing endemic encryption master keys. The DB2 Advanced Recovery Feature is a bundle of database backup, recovery and data extraction tools that can advocate users improve availability, mitigate risk and optimize administrative tasks.

    The current version of DB2 for z/OS is 11, which was released in October 2013. Highlights of DB2 11 for z/OS involve performance and availability enhancements, improved analytics capabilities, application compatibility features, improved access path stability and archive transparency. IBM too offers the IBM DB2 Analytics Accelerator, which is an add-on to DB2 for z/OS for speeding up analytical queries.

    DB2 for LUW requires two configuration files: the Database Manager configuration file containing configuration parameters for an entire instance, and Database configuration files for each database.      

    DB2 for LUW is too embedded into IBM's database PureData appliance, enabling turnkey implementation of DB2 without the time-consuming installation and configuration required of a routine DBMS installation.

    DB2 for z/OS is installed as a subsystem with components for database services, lock management, distributed request processing and connecting to other mainframe agents. The subsystem is configured with a set of parameters called the DSNZPARMs.

    DB2 offerings

    As of Version 11, IBM offers eight editions of DB2 for LUW:

  • DB2 Advanced Enterprise Server Edition offers the highest plane of functionality available for DB2 and is suitable for transactional, warehouse and mixed workloads. This edition has no processor, recollection or database size limits and comes with a complete complement of warehouse tools, InfoSphere Optim tools and IBM Data Studio.
  • DB2 Advanced Workgroup Server Edition is similar to the DB2 Advanced Enterprise Server Edition, except it places limits on processor, recollection and database size. This edition is best-suited for deployment in a departmental, workgroup or midsize trade environment.
  • DB2 Enterprise Server Edition is suitable for transactional and mixed workloads, and relish the advanced version, it has no processor, recollection or database size limits. However, unlike the advanced version, it lacks column-organized tables, in-memory database, data compression, workload management, replication and distributed partitioning capabilities.
  • DB2 Workgroup Server Edition is primarily for transactional workloads. This edition places limits on processor, recollection and database size, which makes it exemplar for medium-size workloads.
  • DB2 Direct Advanced Edition is a version of DB2 Advanced Workgroup Server Edition for digital delivery.
  • DB2 Direct standard Edition is a digital version of DB2 Workgroup Server Edition for digital delivery.
  • DB2 for expansive Data combines the relational engine of DB2 with IBM's BigInsights platform for expansive data and analytics. This edition is designed to enhance portability of data across relational systems and Hadoop.
  • DB2 Developer Edition is designed for a solitary application developer to design, build and prototype applications for deployment on any of the IBM Information Management client or server platforms.
  • Additionally, DB2 Express-C edition, an entry-level edition of the DB2 data server for the developer and ally community, is available for free. It can live installed on physical or virtual systems with any amount of CPU and RAM, and is optimized to employ up to a maximum of two cores and 16 GB of memory.

    DB2 data types

    DB2 supports the standard numeric, character, and date/time data types well as LOBs, XML and user-defined types. JSON is supported via DB2 JSON, a driver-based solution that delivers JSON data representation within the context of an RDBMS.

    DB2 benchmarks

    IBM has published numerous TPC benchmarks for DB2 on outright platforms supported. IBM sells DB2 for LUW direct, through trade partners, online and through application specific licensing, which allows vendors such as SAP to license and sell DB2 relational DBMS as allotment of their applications.

    Pricing is based on processor value unit (PVU), which is a unit of measure that IBM uses to license its software. IBM applies a PVU weigh to each core of a processor. The pricing is then based on the number of PVUs for the processor and by the number of processors made available to DB2.

    The developer edition is licensed by authorized user, not PVU. There are additional nuances to pricing and licensing based on DB2 editions that aren't covered here.

    DB2 licensing

    The license cost for DB2 includes first-year advocate and subscription, entitling the owner to contact IBM for advocate as well as to download fixes and upgrades to future versions/releases of the product.

    DB2 for z/OS relational DBMS is sold directly by IBM and is licensed as a monthly license freight (MLC) product. There are numerous metrics available for pricing MLC products. A 90-day free visitation download is available from the IBM website.

    About the authorCraig S. Mullins is a data management strategist, researcher, consultant and author with more than 30 years of experience in outright facets of database systems development. He is president and principal consultant of Mullins Consulting Inc. and publisher/editor of TheDatabaseSite.com. Email him at craig@craigmullins.com.

    Email us at editor@searchdatamanagement.com and succeed us on Twitter: @sDataManagement.

    This article was updated in September 2016.



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