V$Sesstat Value "session Pga Memory (max)" Seems to be Limited to 4Gb (Doc ID 1962594.1)

Last updated on JANUARY 21, 2015

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.0. to 12.1.0.1 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Goal

V$Sesstat is used to monitor the size of the PGA, using the column 'session pga memory max'. This is observed to increase to a maximum of 4Gb.

However PGA_AGGREGATE_TARGET is set to 200Gb and, using pmap, processes are seen to be exceeding 4Gb at OS level.

Solution

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