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Support Article

JVM heap issue crashing the JVMS

SA-30921

Summary



Heap dump was collected from Production node and inspected through a heap analyzer. The report suggests that there might still be a minor memory leak. A particular object was found holding 11% of the total heap at the time of collection of heap dump.  This collection consisted of over 24,000 instances of PRPC class  LockManagerImpl$LockInformation


Error Messages



Not applicable.


Steps to Reproduce



Occurs during normal system use - no reproduction scenario.


Root Cause



Pegasystems defect identified - leaking instances of  LockManagerImpl$LockInformation class were not getting cleared from memory.


Resolution



Install hotfix HFix-30363, which will allow the SystemCleaner agent to remove expired locks from memory (as it was already removing them from the database table pr_sys_locks).
Suggest Edit

Published December 15, 2016 - Updated October 8, 2020

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