Issue with Planning service getting crashed Automatically due to dll file

Question

Hello,
I am having an issue with the Hyperion Planning service which is getting crashed and the following is noted in the Eventviewer:
Faulting application name: HyS9Planning.exe, version: 1.0.0.2, time stamp: 0x4d110efc
Faulting module name: jrosal.dll, version: 0.0.0.0, time stamp: 0x4e8c8104
Exception code: 0x40000015
Fault offset: 0x000000000000cb0b
Faulting process id: 0x1960
Faulting application start time: 0x01ce14f7a8434b04
Faulting application path: D:\Oracle\Middleware\user_projects\domains\EPMSystem\bin\HyS9Planning.exe
Faulting module path: D:\Oracle\Middleware\jrockit_160_29\jre\bin\jrosal.dll
Report Id: 967733e6-8152-11e2-9257-5cf3fc335086The following is recorded in the log file:
<Mar 2, 2013 2:45:22 PM CST>
<Error> <HTTP> <BEA-101017> <[ServletContext@271625046[app:PLANNING module:HyperionPlanning path:/HyperionPlanning spec-version:2.5 version:11.1.2.0]]
Root cause of ServletException.
java.lang.OutOfMemoryError: classblock allocation, 11312928 loaded, 11M footprint, in check_alloc (src/jvm/model/classload/classalloc.c:215).
Attempting to allocate 2G bytes
There is insufficient native memory for the Java
Runtime Environment to continue.
Possible reasons:
  The system is out of physical RAM or swap space
  In 32 bit mode, the process size limit was hit
Possible solutions:
  Reduce memory load on the system
  Increase physical memory or swap space
  Check if swap backing store is full
  Use 64 bit Java on a 64 bit OS
  Decrease Java heap size (-Xmx/-Xms)
  Decrease number of Java threads
  Decrease Java thread stack sizes (-Xss)
  Disable compressed references (-XXcompressedRefs=false)
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
     at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:343)
     Truncated. see log file for complete stacktraceI checked the following forum
Re: Oracle JRockit R28.2.2. OutOfMemoryError: classblock allocation
Should I need to increase -XX:MaxClassBlockMemory to 75M. If so, how should I do it, I am unaware of how I can set the values? My Planning server has 136GB Ram and 18 Cores.
Thanks,
hyperionEPM

Answer 1

The issue was related to the heap size being too much and as a result the Class block memory was not getting enough memory. I think we can make a use of -XXCompressedRefs:32 parameter in the Java start up to allow the heap size to increase till 32 Gb.