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DB2 UDB for z/OS Version 8 Performance Topics - IBM Redbooks

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Tables<br />

2-1 Changed DSNZPARM default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25<br />

2-2 z/<strong>OS</strong> release functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26<br />

3-1 Class 1 CPU time (sec.) to process 100,000 rows . . . . . . . . . . . . . . . . . . . . . . . . . . 38<br />

3-2 Measurements <strong>for</strong> mismatched numeric data types . . . . . . . . . . . . . . . . . . . . . . . . . 70<br />

3-3 Static cursor declare and fetch specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92<br />

3-4 Read cursor - Static vs. dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99<br />

3-5 Update cursor static vs. dynamic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101<br />

3-6 Multi-row FETCH static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104<br />

3-7 Multi-row FETCH dynamic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104<br />

3-8 Multi-row FETCH and UPDATE or DELETE static . . . . . . . . . . . . . . . . . . . . . . . . . 105<br />

3-9 Multi-row FETCH and UPDATE or DELETE dynamic . . . . . . . . . . . . . . . . . . . . . . . 106<br />

3-10 Access type and sort with backward index scan . . . . . . . . . . . . . . . . . . . . . . . . . . . 108<br />

3-11 Old consistency query 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113<br />

3-12 Consistency Query 31 New . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115<br />

3-13 Query using MQT table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123<br />

4-1 CM vs. NFM - Non-data sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133<br />

4-2 CM vs. NFM - Data sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134<br />

4-3 Accounting class 2 CPU time increase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137<br />

4-4 System storage configuration <strong>DB2</strong> V7 vs. <strong>DB2</strong> V8 . . . . . . . . . . . . . . . . . . . . . . . . . 148<br />

4-5 Non-distributed DBM1 virtual storage comparison . . . . . . . . . . . . . . . . . . . . . . . . . 149<br />

4-6 Virtual storage comparison <strong>for</strong> CLI, JDBC, embedded SQL, and SQLJ workloads. 150<br />

4-7 <strong>DB2</strong> storage messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153<br />

4-8 Real storage comparison <strong>for</strong> CLI, JDBC, embedded SQL, and SQLJ workloads . . 154<br />

4-9 Long term page fix - non-data sharing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170<br />

4-10 Long term page fix - data sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170<br />

4-11 IRLM CPU - V2.1 vs. V2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173<br />

4-12 <strong>DB2</strong> V7 - Sizes in KB (usable track size 48 KB <strong>for</strong> 3390) . . . . . . . . . . . . . . . . . . . . 199<br />

4-13 <strong>DB2</strong> V8 - Sizes in KB (usable track size 48 KB <strong>for</strong> 3390) . . . . . . . . . . . . . . . . . . . . 200<br />

4-14 I/O service time on ESS 800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201<br />

4-15 Lock avoidance of overflow record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214<br />

5-1 Concurrent execution of BACKUP SYSTEM and IRWW workload . . . . . . . . . . . . . 224<br />

5-2 LOGAPPLY phase measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225<br />

5-3 NPI vs. DPSI SELECT COUNT query . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254<br />

5-4 NPI vs. DPSI SELECT COUNT query parallelism . . . . . . . . . . . . . . . . . . . . . . . . . . 254<br />

5-5 DPSI overhead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255<br />

5-6 DPSI access path change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255<br />

6-1 Delimited Load and Unload CPU comparisons . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272<br />

6-2 Summary of RUNSTATS improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272<br />

6-3 RUNSTATS with DSTATS measurement data in V7. . . . . . . . . . . . . . . . . . . . . . . . 278<br />

6-4 RUNSTATS with DSTATS measurement data in V8. . . . . . . . . . . . . . . . . . . . . . . . 279<br />

7-1 <strong>DB2</strong> connect evaluation <strong>DB2</strong> V7 vs. <strong>DB2</strong> V8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285<br />

7-2 <strong>DB2</strong> V8 with implicit multi-row FETCH vs. V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288<br />

7-3 <strong>DB2</strong> V8 with explicit multi-row FETCH vs. V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288<br />

7-4 Comparing the key points of the two solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302<br />

8-1 CF Request Batching - <strong>DB2</strong> PE extract (OLTP) . . . . . . . . . . . . . . . . . . . . . . . . . . . 322<br />

8-2 CF Request Batching - RMF extract (OLTP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322<br />

8-3 CF Request Batching - <strong>DB2</strong> PE extract (batch). . . . . . . . . . . . . . . . . . . . . . . . . . . . 323<br />

8-4 CF Request Batching - RMF extract (batch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324<br />

© Copyright <strong>IBM</strong> Corp. 2005. All rights reserved. xv

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