DB2 V10 upgrade Colruyt. slide 1

Transcription

1 DB2 V10 upgrade Colruyt slide 1

2 DB2 V10 upgrade Colruyt Who are we Migration plan Issues Performance New features slide 2

3 Who are we... Retail Wholesale & Food service Other Belgium Colex France Luxembourg slide 3

4 Who are we... DB2 Architecture Galileï (z ) 6 CPU & 2 ziip 6251 mips 96 GB XPC01 DBP1 DB2P DBP2 Newton (z ) 5 CPU & 2 ziip 5300 mips 96 GB DBS2 DB2S DBS1 DBE1 DB2E Legend: XOC01 DBT2 DB2T DBT1 Production Development Test DBA1 DB2A DBA2 Training Acceptence DBA Sandbox XAC01 DBI1 DB2I slide 4

5 Migration plan New customer since 2008 started in DB2 V9 No existing migration plans Setup DBA sandbox (DB2I) environment (January 2012) Pre-migration tasks (January 2012 February 2012) Upgrade Third party Tools Check for necessary V9 PTF s Check for incompatibilities / ZPARM changes DSNTIJPA Migration to Conversion Mode (February 2012 June 2012) With preventive maintenance prior to migration DB2P Migration to New-Function Mode (August 2012 October 2012) slide 5

6 Migration plan Premigration Tasks Migration Third Party Product IBM Utility Suite Log Analysis Tool Query Monitor Tool Administration Tool Tivoli Performance Monitor DB2 Connect Upgraded from V9.1 to V10.1» V9.7 FP3a required for new functions Replication Tools Windows Client Tools Datastudio AQT / Toad slide 6

7 Migration plan Premigration Tasks Check for necessary V9 PTF s Current on maintenance (December 2011)) Check for incompatibilities / ZPARM changes A few ZPARM changes were done before migration started Altered minimal/default values Modified DSN3SATH Deprecated DSNAEXP move to new EXPLAIN privileges (TODO 2013) DSNTIJPA Some PLANs that contained DBRMs Migration of EXPLAIN tables SMS managed Catalog & Directory Already implemented in V9 through SMS rules Extended addressability slide 7

8 Migration plan SMS Environment Setup DB2 Catalog DB2 Directory Active Log Copy 1 DB2 BSDS 1 Active Log Copy 2 DB2 BSDS 2 User Data Tool Data Workfile Database GDB2PCP1 GDB2PCP2 GDB2PCP3 GDB2PCP4 GDB2PCP5 GDB2PCP7 CDB2PCP1 CDB2PCP2 CDB2PCP3 CDB2PCP4 CDB2PCP5 CDB2PCP7 DDB2EXT DDB2EXT Archive Logs Backups Storagegroup Storageclass Dataclass slide 8

9 Migration plan Migration to Conversion Mode DSNTIJXZ Update default ZPARM input member (DSNTIDxx) Buffer Pool Settings Ensure that no DB2 work is running Cancelled utilities!! DSNTIJMV / DSNTIJRW New / Modified WLM environments DSNTIJEX Recompile security exit DSN3SATH DSNTIJTC Migrate to Conversion Mode Rebind all packages Rebind with PLANMGMT (EXTENDED) Available since DB2 V9 4 hours slide 9

10 Migration plan Issues in Conversion Mode Issues with IBM Tools IBM Administration Tool generating faulty scripts IBM Query Monitor displaying incorrect elapsed times Utility jobs abending with 00C4 Every time dynamic sort space allocation occurred Workaround: specify SORTDEVT & SORTNUM Problem CA-ACF2 interface IDLE THREAD TIMEOUT ABEND=04E REASON=00D3003B Threads were kept active even after commit Are forced out of DB2 (IDHTHOIN = 120 sec) UK78127 was applied Fault in planning REBIND job ran when member 1 was migrated WLM choose to run on member 2 Rebind all fixed the issue Migration plan was adapted slide 10

11 Migration plan Issues in Conversion Mode High CPU consumption in MSTR STC - SRB Attributed to internal memory management for statistics PTF UK80191 resolves the problem Currently being implemented High CPU consumption in MSTR STC TCB Introduced after applying z/os maintenance DB2 gathers additional real storage information z/os fix UA63988 should reduce the CPU time required to gather this information Currently being implemented Drop of + 70% TCB CPU time in DB2A slide 11

12 Migration plan High CPU consumption in MSTR STC TCB TIME MSTR - Total Consumption CPU seconds /01/12 6/02/12 13/02/12 20/02/12 27/02/12 5/03/12 12/03/12 19/03/12 26/03/12 2/04/12 9/04/12 16/04/12 23/04/12 30/04/12 7/05/12 14/05/12 21/05/12 28/05/12 4/06/12 11/06/12 18/06/12 25/06/12 2/07/12 9/07/12 16/07/12 23/07/12 30/07/12 6/08/12 13/08/12 20/08/12 27/08/12 3/09/12 10/09/12 17/09/12 24/09/12 1/10/12 8/10/12 15/10/12 22/10/12 29/10/12 5/11/12 12/11/12 19/11/12 26/11/12 3/12/12 WEEK SSAS_TCB_TIME SSAS_SRB_TIME SSAS_PRE_CP_SRB SSAS_PRE_IIP_SRB TOTAL_CPU slide 12

13 Migration plan Migration to New-Function Mode DSNTIJEN Migrate to Enabling New-Function Mode Converts the catalog tables DSNTIJNF Migrate to New-Function Mode DSNTIJNG Update DSNHDECP load module DSNTIJRT/DSNTIJRV Install and verify DB2 supplied routines DSNTIJCL / DSNTIJMS ODBC & JDBC support Rebind all packages Rebind with PLANMGMT (EXTENDED) REORG Catalog & Directory 2 hours slide 13

14 Migration plan Issues in New-Function Mode DB2 connect Unlimited Edition V10.1 SQL1598N An attempt to connect to the database server failed because of a licensing problem. The db2connectactivate utility activates the license and grants access to SYSIBM.DB2CON_LIC package SYSIBM.DB2CON_LIC package:» Will update a local file conlic.bin (if last entry is not older then 7 days) CA-ACF2 interface as external security package Grant to SYSIBM.DB2CON_LIC package was not done by db2connectactivate utility After granting EXECUTE on package everything OK slide 14

15 Performance SQL Performance comparison: Weekly sum CPU consumption by thread type Daily Average CPU consumption per SQL statement by thread type Thread types: DRDA CICS BATCH (PL/I) slide 15

16 DRDA performance Millions CPU seconds SQL STMT (x ) WEEK CLASS2_CPU_AGENT CLASS2_IIP_CPU OCCURENCES slide 16

17 DRDA performance (weekdays only) 0, , , , , , , , /04/12 9/04/12 16/04/12 23/04/12 30/04/12 7/05/12 14/05/12 21/05/12 28/05/12 4/06/12 11/06/12 18/06/12 25/06/12 2/07/12 9/07/12 16/07/12 23/07/12 30/07/12 6/08/12 13/08/12 20/08/12 27/08/12 3/09/12 10/09/12 17/09/12 24/09/12 1/10/12 8/10/12 15/10/12 22/10/12 29/10/12 5/11/12 12/11/12 19/11/12 26/11/12 AVG CPU/SQL 30 per. Mov. Avg. (AVG CPU/SQL) slide 17

18 DRDA Performance (weekdays only) DRDA Performance conclusion: V9 V10 NFM CM NFM AVG_CPU_SQL 0, , , % 100,00% 91,13% 98,88% 93,44% AVG_IIP_SQL 0, , , % 100,00% 83,87% 92,81% 86,53% slide 18

19 CICS performance CPU seconds SQL STMT (x ) WEEK CLASS2_CPU_AGENT OCCURENCES slide 19

20 CICS performance (weekdays only) 0, , , , , , , /04/12 9/04/12 16/04/12 23/04/12 30/04/12 7/05/12 14/05/12 21/05/12 28/05/12 4/06/12 11/06/12 18/06/12 25/06/12 2/07/12 9/07/12 16/07/12 23/07/12 30/07/12 6/08/12 13/08/12 20/08/12 27/08/12 3/09/12 10/09/12 17/09/12 24/09/12 1/10/12 8/10/12 15/10/12 22/10/12 29/10/12 5/11/12 12/11/12 19/11/12 26/11/12 3/12/12 AVG CPU/STMT 30 per. Mov. Avg. (AVG CPU/STMT) slide 20

21 CICS Performance (weekdays only) CICS Performance conclusion: V9 V10 NFM CM NFM AVG_CPU_SQL 0, , , % 100,00% 94,13% 101,04% 96,12% slide 21

22 BATCH performance Millions CPU seconds SQL STMT (x ) WEEK CLASS7_CPU_AGENT CLASS7_IIP_CPU SQL_STMTS_ISSUED slide 22

23 BATCH performance 0, , , , , , , , , , , /03/12 12/03/12 22/03/12 1/04/12 11/04/12 21/04/12 1/05/12 11/05/12 21/05/12 31/05/12 10/06/12 20/06/12 30/06/12 10/07/12 20/07/12 30/07/12 9/08/12 19/08/12 29/08/12 8/09/12 18/09/12 28/09/12 8/10/12 18/10/12 28/10/12 7/11/12 17/11/12 27/11/12 AVG CPU/STMT SQL_STMTS_ISSUED 30 per. Mov. Avg. (AVG CPU/STMT) slide 23

24 BATCH Performance BATCH Performance conclusion: V9 V10 NFM CM NFM AVG_CPU_SQL 0, , , % 100,00% 83,54% 57,36% 75,80% slide 24

25 Subsystem Performance - MSTR MSTR CPU consumption increased: After CM: Due to DB2 internal memory managemnt process PREEMPT SRB Fixed in UK80191 currently being applied +45% for TOTAL_MSTR_CPU After Z/OS maintenance: (25/08/2012) z/os PTF UA60825 Fixed in UA63988 applied in XOC % in TCB_MSTR_CPU slide 25

26 Subsystem Performance - MSTR MSTR - Total Consumption DB2P CPU seconds WEEK SSAS_TCB_TIME SSAS_SRB_TIME SSAS_PRE_CP_SRB SSAS_PRE_IIP_SRB slide 26

27 Subsystem Performance DBM1 DIST CPU consumption moved to ziip: DBM1_SRB_CPU -50% DBM1_SRB_IIP +200% DBM1_TOTAL_CPU Netto saving of 40% slide 27

28 Subsystem Performance DBM1 DBM1 - Total Consumption DB2P CPU seconds WEEK DSAS_TCB_TIME DSAS_SRB_TIME DSAS_PRE_CP_SRB DSAS_PRE_IIP_SRB slide 28

29 Subsystem Performance DIST DDF - Total Consumption DB2P CPU seconds WEEK DDF_TCB_TIME DDF_SRB_TIME DDF_PRE_CP_SRB DDF_PRE_IIP_SRB slide 29

30 RUNSTATS CPU/IIP TIME DB2 RUNSTATS CPU SEC OCCURRENCES WEEK SUM_CL1_CPU SUM_CL1_IIP OCCURRENCES slide 30

31 New-features REBIND options APREUSE/APCOMPARE New security privileges Temporal Data 1MB FRAME size Index INCLUDE slide 31

32 slide 32 Questions?