June 2018
Intermediate to advanced
478 pages
10h 52m
English
Content preview from IBM Db2 11.1 Certification Guide
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CF_DB_MEM_SZ (DB CFG in 4K pages)
It can be set to a fixed size amount, or a fixed size amount and AUTOMATIC, as seen below:
UPDATE DB CFG FOR sample USING CF_DB_MEM_SZ 6492672 AUTOMATIC;
If set to automatic, STMM will tune this amount based on dynamic workload demands. Other CF settings, such as CF_GBP_SZ, CF_LOCK_SZ, and CF_SCA_SZ, will adjust dynamically, also, because their percentage of CF is based on CF_DB_MEM_SZ.
CF_DB_MEM_SZ = (CF_GBP_SZ + CF_LOCK_SZ + CF + SCA_SZ)
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