ORA-12805 and All Memory Consumed on Server (Doc ID 1296911.1)

Last updated on FEBRUARY 09, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.3 to 11.1.0.6 [Release 10.2 to 11.1]
Information in this document applies to any platform.
***Checked for relevance on 9-Feb-2016***

Symptoms

When run in parallel and pga_aggregate_target is > 1G, a materialized view refresh fails with ORA-12805, and the system runs out of memory and paging space.  This also occurs when a 'create table as select' (CTAS) is run with the materialized view's select statement.  There is no issue when pga_aggregate_target = 1G.  The execution plan contained a HASH GROUP BY operation.

Cause

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