Optimizing SQL Insert Performance - GSE Belux

More documents

Recommendations

Info

V10 Enhancements • Index I/O parallelism for non-segmented tablespace • Unique Index with INCLUDE columns • Log latch contention relief • Faster log I/O during commit • Index look aside for referential integrity • In-line LOB • Space search improvement for UTS • Support MEMBER CLUSTER for UTS • Additional LRSN spin avoidance • Page fix of output log buffer 46 © 2010 IBM Corporation
V10 Enhancements ... • In-line LOB • Space search improvement for UTS • Support MEMBER CLUSTER for UTS • Additional LRSN spin avoidance • Page fix of output log buffer 47 © 2010 IBM Corporation
Page 1 and 2: DB2 for z/OS Optimizing Insert Perf
Page 3 and 4: Agenda • Insert Space Search •
Page 5 and 6: Choice: Performance or Space Reuse
Page 7 and 8: Space Search Steps (Classic Partiti
Page 9 and 10: PBG search algorithm for entire tab
Page 11 and 12: Segmented Tablespace • Segmented
Page 13 and 14: Partitioned Tablespace • Use page
Page 15 and 16: Distributed Free Space • Use dist
Page 17 and 18: TRACKMOD NO • Reduces spacemap co
Page 19 and 20: MEMBER CLUSTER … • Rows inserte
Page 21 and 22: MEMBER CLUSTER, PCTFREE = 0 and FRE
Page 23 and 24: Typical Performance Bottlenecks and
Page 25 and 26: Read and Write I/O for Index and Da
Page 27 and 28: Read and Write I/O for Index and Da
Page 29 and 30: Lock/Latch and Service Task Waits
Page 31 and 32: DB2 Latch Contention • Latch Coun
Page 33 and 34: GENERATE_UNIQUE() • Built-in func
Page 35 and 36: DB2 9 Performance Enhancements 35
Page 37 and 38: Large Index Page Size • Available
Page 39 and 40: Increased Index Look Aside • Prio
Page 41 and 42: Randomised Index Key • Index cont
Page 43 and 44: Identifying Unreferenced Indexes
Page 45: DB2 10 Performance Enhancements 45
Page 49 and 50: Summary - Key Points • Decide whe

Optimizing SQL Insert Performance - GSE Belux

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?