KEEP BUFFER POOL Does Not Work for Large Objects on 11g (Doc ID 1081553.1)

Last updated on SEPTEMBER 27, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.7 to 11.2.0.1 [Release 11.1 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 04-Nov-2011***


Symptoms

While doing full table scan, Buffer Cache KEEP pool is not being used to read the blocks of a (KEEP) table which size is >10% of  DB_KEEP_CACHE_SIZE.

These blocks are always being read through DIRECT READ, which can cause performance problem due to non-caching / re-reading of keep object blocks.

Changes

Upgraded to 11g.

Cause

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