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ORA-04030: out of process memory when trying to allocate bytes

Brian Peasland EXPERT RESPONSE FROM: Brian Peasland

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QUESTION POSED ON: 14 May 2007
When I run a multi-threaded process in Oracle Apps 11i, it fails with the error "ORA-04030: out of process memory when trying to allocate 16396 bytes (koh-kghu sessi,pl/sqlvc2)." Through Metalink research I found out that the recommended setting for the pga_aggregate_target for an Oracle Applications 11i environment is between 1-20 GB. We have allocated 1GB to pga_aggregate_target in Patch environment. The IS-STOA server has 24GB memory. How to avoid this error?

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The information you found on Metalink is correct. You need to have a correct setting for the PGA_AGGREGATE_TARGET initialization parameter. The big question becomes, what is the correct setting? Unfortunately, I cannot answer that question. However, I do have a white paper on my Web site titled "Tuning PGA in Oracle 9i" which shows you how to successfully determine the value for this parameter.


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