ORA-04030 in QERGH hash-agg,kllcqas:kllsltba (Doc ID 735783.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.1.0.6 [Release 10.2 to 11.1]
Information in this document applies to any platform.
***Checked for relevance on 16-Jan-2013***

Symptoms

Running a resource consuming process (e.g. a huge CTAS) fails with ORA-04030: out of process memory when trying to allocate 115212 bytes (QERGH hash-agg,kllcqas:kllsltba) ORA-12801: error signaled in parallel query server P005 ...

OS, kernel and Oracle settings are all OK, and do not explain the ORA-4030

Plenty of free memory available at time of error, and process ulimit limitations are not exceeded.

Not able to determine that the process runing the CTAS is consuming huge allocations for PGA memory.

Cause

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