Sort Area Does Not Go Beyond 3.7G Even If The PGA_AGGREGATE_TARGET Is High Enough (Doc ID 2207390.1)

Last updated on NOVEMBER 24, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Information in this document applies to any platform.

Symptoms

Although sufficient memory is allocated in RAM, sorting still uses the temporary space on disk after reaching a 3.7Gb limit. The following testcase reproduces the problem:

Setting _PGA_MAX_SIZE or _SMM_MAX_SIZE to larger values, does not help. Increasing the PGA_AGGREGATE_TARGET does not allow the memory allocated for sorts to increase more then 3.7Gb.

Cause

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