1. System Performance at BNP Paribas Fortis GSE DB2 17 March 2016 Eddy Tiels

2. | 07/07/2016 | DB2 maintenance 2 | 07/07/2016 | DB2 maintenance 2 Contents Introduction Performance Warehouse SSD

3. | 07/07/2016 | DB2 maintenance 3 | 07/07/2016 | DB2 maintenance 3 Introduction

4. | 07/07/2016 | DB2 maintenance 4 | 07/07/2016 | DB2 maintenance 4 Introduction Software used DB2 V10 (DEV and TEST in V11) BMC Tools V11 BMC Mainview used for Performance Warehouse IBM Utilities V10

5. | 07/07/2016 | DB2 maintenance 5 | 07/07/2016 | DB2 maintenance 5 Performance Warehouse The SMF records are loaded by plex PLXC – daily about 850.000 (multiple subsystems) PLXB – daily about 10.000.000 PLXA – daily about 400.000.000 All volume data is summarized by hour Data retention Kept for at least 100 days Package information is kept 150 days Plan data is kept for 200 days

6. | 07/07/2016 | DB2 maintenance 6 | 07/07/2016 | DB2 maintenance 6 Performance Warehouse DB2 statistics tables DMRSTAT - statistics table, Not summarized DMRSTDF - DDF statistics table, SUMMKEY=(SUBSYSTEM,SYSTEMID,LOCATION) DMRSTADT - storage address space statistics table, Not summarized DMRSTSDT - system storage statistics table, Not summarized DMRSBSUM - buffer statistics summary table SUMMKEY=(SUBSYSTEM,SYSTEMID,LOCATION,BPNAME) DMRSDSUM - DDF statistics summary table SUMMKEY=(SUBSYSTEM,SYSTEMID,LOCATION,DDFLOCATION) DMRSTSUM - summary statistics table SUMMKEY=(SUBSYSTEM,SYSTEMID,LOCATION)

7. | 07/07/2016 | DB2 maintenance 7 | 07/07/2016 | DB2 maintenance 7 Performance Warehouse DB2 accounting tables DMRACSUM - accounting SUMMKEY=(LOCATION,SUBSYSTEM,PLANNAME) DMRABSUM - accounting buffer SUMMKEY=(LOCATION,SUBSYSTEM,PLANNAME,BPNAME) DMRADSUM - DDF accounting SUMMKEY=(LOCATION,SUBSYSTEM,PLANNAME,AUTHID,DDFLOCATION) DMRAPSUM - package accounting SUMMKEY=(LOCATION,SUBSYSTEM,PROGRAMNAME)

8. | 07/07/2016 | DB2 maintenance 8 | 07/07/2016 | DB2 maintenance 8 Performance Warehouse DB2 volumes

9. | 07/07/2016 | DB2 maintenance 9 | 07/07/2016 | DB2 maintenance 9 SSD Definition Solid-state drives consist of Flash memory mainly known from it’s use in memory cards and USB flash drives. They don’t have moving parts, consume less energy and have better performance for random accesses then hard disk drives, but they are more expensive DS8870 hardware is used at BNP Automatic tiering is done between 3 levels 1.SSD 27 Tb 2.300 GB disks at 15000 RPM 100 Tb 3.1200 GB disks at 10000 RPM 303 Tb

10. | 07/07/2016 | DB2 maintenance 10 | 07/07/2016 | DB2 maintenance 10 SSD Overall response - BEFORE

11. | 07/07/2016 | DB2 maintenance 11 | 07/07/2016 | DB2 maintenance 11 SSD Overall response - AFTER

12. | 07/07/2016 | DB2 maintenance 12 | 07/07/2016 | DB2 maintenance 12 SSD Tablespace info from RTS

13. | 07/07/2016 | DB2 maintenance 13 | 07/07/2016 | DB2 maintenance 13 SSD Index info from RTS

14. | 07/07/2016 | DB2 maintenance 14 | 07/07/2016 | DB2 maintenance 14 SSD Space info from RTS

15. | 07/07/2016 | DB2 maintenance 15 | 07/07/2016 | DB2 maintenance 15 SSD TS and IX datasets

16. | 07/07/2016 | DB2 maintenance 16 | 07/07/2016 | DB2 maintenance 16 SSD TS and IX datasets

17. | 07/07/2016 | DB2 maintenance 17 | 07/07/2016 | DB2 maintenance 17 SSD DB2 information on DRIVETYPE in RTS SYSIBM.SYSTABLESPACESTATS SYSIBM.SYSINDEXSPACESTATS HDD Hard Disk Drive SSD Solid State Drive For multi-volume data sets, the drive type is set to SSD if any volume is SSD. For multi-piece linear page sets, the drive type of the first data set is used. DB2 APAR PI35321 This APAR delivers DB2 for z/OS REORG utility support for directive data placement enhancement introduced by DS8870 microcode level R7.4 using Easy Tier Application API.

18. | 07/07/2016 | DB2 maintenance 18 | 07/07/2016 | DB2 maintenance 18 SSD Overall transaction response time (SU=1/10000)

19. | 07/07/2016 | DB2 maintenance 19 | 07/07/2016 | DB2 maintenance 19 SSD Overall transaction response time (SU=1/10000)

20. | 07/07/2016 | DB2 maintenance 20 | 07/07/2016 | DB2 maintenance 20 SSD High used transactions response time BeforeAfter Current

21. | 07/07/2016 | DB2 maintenance 21 | 07/07/2016 | DB2 maintenance 21 SSD Questions I have How is DB2 defining SSD/HDD With Easy Tiering the complete dataset is not necessarily on the same Tier How can you monitor and is it necessary

22. Questions ?