DB2 for z/OS V8 - Guide Share France
DB2 for z/OS V8 - Guide Share France
DB2 for z/OS V8 - Guide Share France
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Rebind all packages/plans<br />
Multi-row FETCH and INSERT<br />
MQTs<br />
Increase size of buffer pools<br />
Long term page fix buffer pools<br />
Fix the buffer pages once in memory and keep them fixed in real<br />
storage<br />
0% to 8% CPU savings<br />
Only if enough real storage to back bpools 100%<br />
Activated by -ALTER BPOOL(x) PGFIX(YES)<br />
Per<strong>for</strong>mance benefit is inversely proportional to the buffer hit ratio:<br />
○ The higher the hit ratio, the lower the benefit<br />
○ Apply to small buffer pools with lots of I/Os<br />
© 2007 MConsulting - cristian@molaro.be 35
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