Best Practices for SAP BI using DB2 9 for z/OS - IBM Redbooks

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IT scenario The environment we used in our tests is shown in Figure B-1. SM9-SAP Database Figure B-1 Our test environment We installed the following SAP products: ► SAP Solution Manager 4.0 SR1 ► SAP NetWeaver 2004s SR1 ABAP and BI-Content 7.03 We updated the NetWeaver system with the latest available support packages (Table B-1). Table B-1 Support packages Software component SAP Solution Manager “SM9" Java Schema: SAPSM9DB DB2 V9 Subsystem “DB2S" ABAP Schema: SM9DB DDF 38290 GUI GUI GUI GUI GUI 316 Best Practices for SAP BI using DB2 9 for z/OS DB Server: Z/OS 1.6, DB2 V9 Appl. Server: AIX AIX AP Srv. SYSNr: 00 Ap.Srv SM9 WAS 7.00 DB2 Conn 9.1 Network AIX AP Srv. SYSNr: 10 Ap.Srv BI9 WAS 7.00 DB2 Conn 9.1 GUI GUI Release Level Highest support package SAP_ABA 700 0011 SAPKA70011 SAP_BASIS 700 0011 SAPKB70011 PI_BASIS 2005_1_700 0011 SAPKIPYJ7B SAP_BW 700 0012 SAPKW70012 BI_CONT 703 0004 SAPKIBIIP4 GUI SAP NetWeaver BI “BI9" ABAP Schema: BI9DB DB2 V9 Subsystem "DB2T" DDF 38300 9.12.4.20 9.12.4.178 9.12.4.20 GUI GUI BI9-SAP Database Java Schema: SAPBI9DB
SAP application servers ran on AIX 5.3 partitions of an IBM pSystem 550. SAP database instances ran on IBM DB2 9 for z/OS and were installed on different LPARs of a z9 EC 2094-S18 IBM System z. The DB2 Connect version was 9.1. FixPack 2 was used. Useful SAP documentation We used the following SAP installation guides: ► SAP Master Guide SAP NetWeaver 2004s, Document Version 1.10 - 11/08/2006 ► SAP NetWeaver 2004s SR1 ABAP + Java on AIX: IBM DB2 UDB for z/OS, Version 1.0 - April 10, 2006 ► SAP Planning Guide for SAP NetWeaver for IBM DB2 for z/OS, SAP NetWeaver 2004s SR1, Version 2.0 - 10/16/2006 ► SAP Database Administration Guide for SAP NetWeaver on IBM DB2 UDB for z/OS, SAP NetWeaver 2004s SR1, Version 2.0 - 08/16/2006 ► SAP Security Guide for IBM DB2 UDB for z/OS, SAP NetWeaver 2004s, Document Version 1.00 - October 24, 2005 The SAP Master Guide contains a description of the NetWeaver 2004s architectural components, application scenarios, and installation components sequence. The Planning Guide covers planning, preparation, installation, and migration activity to be performed at z/OS level. The Database Administration Guide provides information for planning, installing, monitoring, and tuning DB2 for z/OS. The Security Guide is a reference material for security issues in an SAP on DB2 for z/OS environment. SAP notes are also important because the integrate and sometimes correct official SAP documentation. A list of notes related to installation and DB2 and z/OS checks is provided in Appendix A, “Glossary for SAP BI” on page 281. Appendix B. SAP BI installation and checks under DB2 and z/OS 317
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Best Practices for SAP BI using DB2
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Note: Before using this information
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4.4 Extended sparse index and in-me
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11.3 SAP BI database and InfoCube l
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viii Best Practices for SAP BI usin
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Trademarks The following terms are
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The team that wrote this IBM Redboo
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Thanks to these authors from the Pr
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► Send your comments in an e-mail
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1.1 Product overview The business w
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In general, database administrators
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► Horizontal growth is achieved b
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8 Best Practices for SAP BI using D
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2.1 BI architecture Figure 2-1 show
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New term Old term Analysis authoriz
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negative values means missing stati
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- When calculating database statist
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If you specify a partitioning schem
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Important: Never partition a PSA ta
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Figure 2-10 DPSIs versus NPSIs Figu
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Finally, Figure 2-12 explains which
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Figure 2-14 shows how the snowflake
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► Realignment This refers to the
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3.1 Base recommendations - SAP BI i
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the F- fact table, the E- fact tabl
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34 Best Practices for SAP BI using
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4.1 Dynamic index ANDing for star s
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Figure 4-2 and Figure 4-3 on page 3
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4.2.1 Processing RUNSTATS for BI ta
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RUNSTATS will then be called over t
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DSNU610I -DB2T 081 16:36:03.85 DSNU
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Often the single-value based freque
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Several things worth noting are:
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The unit of a value specified to MX
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condition, generated by SAP BI upon
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There is a separate IBM Redbooks pu
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5.1 Load PSA In this section we dis
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5.1.1 Load PSA To load data into th
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After the source system, the DataSo
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Note the available tabs (registers)
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Figure 5-8 shows the provided optio
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Figure 5-10 shows the following:
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The PSA table name is created autom
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5.1.4 PSA partitioning Partitioning
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An InfoCube, whether data target or
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6.1 Types of InfoCubes Data targets
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After selecting at least one time d
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6.2.1 Repartitioning implementation
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You will then be presented with a w
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From within the monitor you are abl
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Once your repartitioning process is
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Figure 6-14 is displayed once you h
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When you remodel an InfoProvider yo
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Figure 6-17 demonstrates how you wo
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At this step of the process you are
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6.3.2 Benefits of remodeling InfoPr
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6.4.3 Cumulative data versus non-cu
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Important: After the initial compre
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► Use DPSIs for the cube’s E- f
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7.1 Differences between DataStore a
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Figure 7-1 shows the initial status
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4. By selecting the Create button,
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Partitioning and clustering are bot
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7.4.2 Choosing and changing the clu
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7.4.4 Partitioning a DataStore obje
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From the ABAP Dictionary: Utility f
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Figure 7-9 DB2/390 Storage Attribut
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partitioning was used. The CREATE T
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, "/BIC/RECORDMODE" POSITION( 00289
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Upon completion of the job, you wil
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| "/BIC/DIVISION" VARGRAPHIC (00000
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| sql: | DELETE FROM DDSTORAGE | WH
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| "/BIC/CRMEM_VAL" DECIMAL (000017,
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| DDL time(___8): .........4 millis
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8.1 Troubleshooting general system
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You need to ascertain: ► Which us
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Further information about the subje
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8.2 Analyzing load performance In t
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We use transaction ST03 → Expert
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Click the Details tab of the RSMO w
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Select the component of interest to
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Figure 8-11 All statistical records
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Figure 8-13 Single statistical reco
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Loading from a flat file You can av
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and right-click to select the Simul
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Note: You must activate the saving
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5. In the right-hand panel of the w
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If your query has long run times th
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that the query runs against → Mai
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If the main component of query perf
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► Display Statistics Data (to sho
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Select the appropriate button, ente
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Figure 8-29 Statement details To ch
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The ratio (ST04 statement cache “
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Figure 8-32 Visual Explain - SQL te
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8.5 SAP Query Analysis Tool The SAP
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Display of sql access path SQL quer
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The access path is displayed hierar
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The table information tab shown in
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DB2 Plan Table Figure 8-42 DB2 plan
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Graphical view of each query block
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Now you see the graphical view of t
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8.5.4 Example of using the query an
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9.1 The BIA architecture Figure 9-1
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Figure 9-2 BIA t-shirt sizing The B
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From the hardware side, the BIA is
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9.7 Overview The improvement of the
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10.1 SQL efficiency for DSO Queries
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The first join predicate is "/BIC/A
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Figure 10-5 Associate local predica
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Step 3 is repeated for each master
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Using the InfoCube query example in
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The first join predicate in Figure
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Thus, we have broken down the origi
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Figure 10-14 Comparing filtering Th
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AND "/BIC/AZOSASALE00"."PLANT" = "/
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Column Local or join CALMONTH Local
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10.4 Indexing of InfoCubes The defa
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11.1 Background To be more competit
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11.2.1 Hardware and software config
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11.2.2 Network infrastructure IBM S
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the chassis for blade-to-blade conn
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As part of the pre-benchmark planni
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11.4 Test case scenarios The goal o
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Figure 11-3 explains the data flow
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In addition, each cube, especially
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Measurement results Table 11-2 prov
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Figure 11-7 shows the average CPU u
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The number of queries per hour show
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Figure 11-10 shows that the average
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11.5.1 Recommendations for configur
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12.1 Terminology: BI objects and pr
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Metadata plays a fundamental role i
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12.3 Dataflow in SAP BI Data flow i
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12.4 Information access As previous
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Predecessor Successor WW Sales Euro
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Page 314 and 315: Similar to the OLAP-standard term c
Page 316 and 317: P table Master data table for time-
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Page 340 and 341: List of SAP BW OSS Notes Table C-1
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Page 348 and 349: Table name Average row length Total
Page 350 and 351: Table name Average row length Total
Page 352 and 353: Parameters BPK16K0 BPK16K1 VIRTUAL
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Page 356 and 357: Example D-6 shows a cube index crea
Page 358 and 359: B49/S_RTNSVAL 24 DECIMAL 17 2 N 4 N
Page 360 and 361: -rw-r--r-- 1 t11adm sapsys 2084482
Page 362 and 363: -rw-r--r-- 1 t11adm sapsys 547449 2
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Page 366 and 367: Online resources These Web sites ar
Page 368 and 369: Help from SAP SAP Support and downl
Page 370 and 371: C Candidates for partiioning Data W
Page 372 and 373: M master data 155, 211, 258, 277 si
Page 374 and 375: star schema 265-266 also see InfoCu
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Best Practices for SAP BI using DB2 9 for z/OS - IBM Redbooks

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