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Exception in thread "DoSManager" java.lang.OutOfMemoryError: nativeGetNewTLA


We are facing this 'Exception in thread "DoSManager" java.lang.OutOfMemoryError: nativeGetNewTLA' exception in our production logs. Our JVM as part of WebLogic Server is BEA JRockit(R) Version R27.6.5-32_o-121899-1.6.0_14 and linux-x86_64.

This is how our JVM is configured:

a. Stack size(-Xss)
--This is not configured
b. Heap size
---Xms2048m -Xmx2048m
c. XXtlasize
---This is not configured
d. XXlargeobjectlimit

---This is not configured too

As I understand if we don't configure above parameters then default values will be considered. Our concern is whenever this exception occurs our application crashes obviously because JVM is not able to execute the code because of insufficient memory. Do we need to tune our JVM or do we need to fix issues in our code? My next task is actually to do the Heap Dump analysis on the Production heap dump which would have been taken when there is an 'OutOfMemoryError' outage for better analysis. For heap dump analysis we will be using MAT.  

Any suggestions regarding this would be welcomed.

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