10.2.0.4 / 10.2.0.5 Not Using Large Pages On AIX (Doc ID 740603.1)

Last updated on APRIL 06, 2015

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 and later
IBM AIX on POWER Systems (64-bit)
z*OBSOLETE: IBM AIX 4.3 Based Systems (64-bit)
IBM AIX Based Systems (64-bit)IBM AIX 4.3 Based Systems (64-bit)
IBM RS 6000 AIX 5LAIX-Based Systems (64-bit)
***Checked for relevance on 03-Nov-2011***

Symptoms

You installed 10.2.0.4 or 10.2.0.5 on AIX and configured correctly large pages but the Oracle instance is not using them.

Or you updated your database from 10.2.0.3 to 10.2.0.4/10.2.0.5 and now the instance is no longer using large pages.

You can check large pages usage with 'svmon -G'

With the same OS configuration Oracle 10.2.0.3 will use large pages.

Changes

Recently applied patchset 10.2.0.4 or 10.2.0.5.

Cause

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