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Optimizer should account for bufferpool hit-ratio when estimated page access time.(RIMS)
In PMR 00962,7TD,000, Goldman Sachs had a scenario where optimizer was choosing a more expensive HSJN over a less expensive NLJN. Shu Lin summaries the problem well: 'In terms of CPU cost and number of IOs, we correctly estimate that NLJN is bette...
Session level LOCK TIMEOUT should apply to all lock types.(RIMS)
Currently, the session-level lock timeout only applies to SQLP_TABLE, SQLP_RECORD, SQLP_KEYVALUE, and SQLP_MDCBLOCK. Customer would like this to apply to all locks acquired by the application that set the session-level timeout value.[Michael Snowb...
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