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Memory Pool Collection warnings at log file at Production



Memory Pool Collection warnings in log file and the system is very slow.

Error Messages

2016-12-23 10:12:05,458 GMT*7*PEGA0028*3940496384*3865470566*9bf59b41d4832165a0c253e12b37710c*NA*NA*NA*NA*NA*NA*NA*?
usage threshold exceeded for long-lived object memory pool (PS Old Gen) INFO:MemoryPool=PS Old Gen;PoolType=long-lived
object;;TimeStamp=2016-12-23 10:12:05,451

Steps to Reproduce

Restart the system.

Root Cause

The PEGA0028 alert is generated after the JVM has used garbage collection (GC) to reclaim memory from one of these memory pools, but the garbage collection failed to reduce the used memory.


Tune the garbage collector referring the following PDN article:

Published October 24, 2017 - Updated October 8, 2020

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