Client Connection Fails with ORA-04030 (QERHJ hash-joi,kllcqas:kllsltba) (Doc ID 470604.1)

Last updated on AUGUST 03, 2016

Applies to:

Oracle Database - Enterprise Edition - Version and later
IBM AIX on POWER Systems (64-bit)
AIX5L Based Systems (64-bit)
***Checked for relevance on 02-Mar-2015***


When executed from a SQL Net client, an Oracle statement can fail with error

ORA-04030 (QERHJ hash-joi,kllcqas:kllsltba)

However, the same request is running fine when launched from the Unix environment (local connection).


The error in this case is an AIX platform specific issue and it occurs because of an OS resource limitation.

Initially, increased the parameter MAXUPROC to 8192 and restart the listener.

The OS commands in order to find the current maxuproc value and change it:



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