IV05652: OOM NATIVE MEMORY EXHAUSTED LOADING A CLASS WHEN RUNNING -XCOMPR ESSEDREFS

APAR status

• Closed as program error.

Error description

• Error Message: java.lang.OutOfMemoryError: native memory
  exhausted
  .
  Stack Trace: <OSB>4/24/11 21:31:10:057 EDT<CSB> 00000020
  FfdcProvider I FFDC provider error
  java.lang.OutOfMemoryError: native memory exhausted
  at com.ibm.oti.vm.VM.findClassOrNull(Native Method)
  at
  com.ibm.oti.vm.BootstrapClassLoader.loadClass(BootstrapClassLoad
  er.java:62)
  at
  sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFi
  eldAccessorFactory.java:73)
  at
  sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory
  .java:134)
  at java.lang.reflect.Field.acquireFieldAccessor(Field.java:945)
  at java.lang.reflect.Field.getFieldAccessor(Field.java:912)
  at java.lang.reflect.Field.get(Field.java:371)
  at
  com.ibm.ffdc.util.formatting.Introspector$2.run(Introspector.jav
  a:149)
  at
  java.security.AccessController.doPrivileged(AccessController.jav
  a:254)
  at
  com.ibm.ffdc.util.formatting.Introspector.getValue(Introspector.
  java:145)
  at
  com.ibm.ffdc.util.formatting.Introspector.formatTo(Introspector.
  java:106)
  at
  com.ibm.ffdc.util.provider.IncidentStream$2.writeTo(IncidentStre
  am.java:194)
  at
  com.ibm.ffdc.util.provider.IncidentStream.write(IncidentStream.j
  ava:198)
  at
  com.ibm.ffdc.util.provider.IncidentStream.write(IncidentStream.j
  ava:129)
  at
  com.ibm.ffdc.util.formatting.Introspector.formatTo(Introspector.
  java:109)
  at
  com.ibm.ffdc.util.provider.IncidentStream$2.writeTo(IncidentStre
  am.java:194)
  at
  com.ibm.ffdc.util.provider.IncidentStream.write(IncidentStream.j
  ava:198)
  at
  com.ibm.ffdc.util.provider.IncidentStream.write(IncidentStream.j
  ava:129)
  at
  com.ibm.ffdc.util.formatting.Introspector.formatTo(Introspector.
  java:109)
  at
  com.ibm.ffdc.util.provider.IncidentStream$2.writeTo(IncidentStre
  am.java:194)
  at
  com.ibm.ffdc.util.provider.IncidentStream.write(IncidentStream.j
  ava:198)
  at
  com.ibm.ffdc.util.provider.IncidentStream.write(IncidentStream.j
  ava:129)
  at
  com.ibm.ffdc.util.provider.CapturedDataElements.formatTo(Capture
  dDataElements.java:53)
  at
  com.ibm.ffdc.util.provider.IncidentLogger.writeIncidentTo(Incide
  ntLogger.java:63)
  at
  com.ibm.ws.ffdc.impl.FfdcProvider.logIncident(FfdcProvider.java:
  172)
  at
  com.ibm.ws.ffdc.impl.FfdcProvider.logIncident(FfdcProvider.java:
  108)
  at
  com.ibm.ffdc.util.provider.FfdcProvider.log(FfdcProvider.java:25
  1)
  at
  com.ibm.ffdc.util.provider.FfdcProvider.log(FfdcProvider.java:23
  7)
  at com.ibm.ws.ffdc.impl.FfdcProvider.log(FfdcProvider.java:118)
  at
  com.ibm.ffdc.util.provider.IncidentEntry.log(IncidentEntry.java:
  96)
  at com.ibm.ffdc.util.provider.Ffdc.log(Ffdc.java:94)
  at
  com.ibm.ffdc.util.provider.FfdcProvider.log(FfdcProvider.java:29
  2)
  at com.ibm.ffdc.impl.Ffdc.log(Ffdc.java:225)
  at com.ibm.ejs.util.am._Alarm.run(_Alarm.java:129)
  at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1648)
  ------------------------
  <OSB>4/25/11 9:37:40:265 EDT<CSB> 00000093 servlet E
  com.ibm.ws.webcontainer.servlet.ServletWrapper service
  SRVE0014E: Uncaught service() exception root cause
  /themes/html/PageBuilder2/modules/pagebuilder/markup/config.jsp:
  com.ibm.websphere.servlet.error.ServletErrorReport:
  java.lang.OutOfMemoryError: native memory exhausted
  at
  org.apache.jasper.runtime.PageContextImpl.handlePageException(Pa
  geContextImpl.java:695)
  at com.ibm._jsp._config._jspService(_config.java:585)
  at
  com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:99)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
  at
  com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWr
  apper.java:1147)
  at
  com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(Ser
  vletWrapper.java:722)
  at
  com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(Ser
  vletWrapper.java:449)
  at
  com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest
  (ServletWrapperImpl.java:178)
  at
  com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleR
  equest(GenericServletWrapper.java:122)
  at
  com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrappe
  r.handleRequest(AbstractJSPExtensionServletWrapper.java:205)
  .
  

Local fix

Problem summary

• A JVM running with -Xcompressesrefs may run out of native memory
  when loading a class or creating a new thread. The JVM needs
  32-bit native memory for classes and threads. It reserves a
  certain amount of 32-bit native memory for this purpose and
  allocates more on demand. If all the available 32-bit native
  memory has been exhausted for other purposes and none is
  available when loading a class or creating a new thread, a
  "java.lang.OutOfMemoryError: native memory exhausted" will
  occur.
  

Problem conclusion

• This defect will be fixed in:
  6.0.1 GA FP2
  .
  More 32-bit native memory is reserved by the JVM.
  .
  To obtain the fix:
  Install build 20110609 or later
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R260 PSY

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