I can't remember if I had a memory leak..

Memory leaks seem to be one of our biggest issues on my current project (CC&B 2.2.0 on Windows Server x64 2003 R2). A review of the components experiencing these leaks has led us to upgrade the following (with thanks to Josh, Ken and Andre for their assistance):
  • Sun Java has now been patched from 1.5.0_09 to 1.5.0_22
  • BEA Weblogic 10.0 has been patched from MP1 to MP2
  • Single Fix 8882447 is recommended if your implementation includes complex plug-in scripts, since these appeared to suffer from a defect in regards to the caching of PreparedXQuery elements resulting in them consuming large amounts of memory.
  • Review all custom batch modules to ensure that they make use of the createJobWorkForEntityQuery method to build the JobWork object, or use createJobWorkForQueryIterator and createWorkUnit if you need to add supplemental data.  These methods cache the thread work units to a temporary disk file to reduce memory consumption, instead of the managing the ThreadWorkUnits list inside the code. Further details are available in the PFD for Single Fix 7447321.
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About

Stuart Ramage

I am a Consulting Technical Manager for Oracle Corporation, and a member of the OU Black Belt Team, based in Hobart Tasmania.
I have worked in the Utility arena since 1999 on the Oracle UGBU product line, in a variety of roles including Conversion, Technical and Functional Architect.

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