IV05726: APPLICATION THROWS JAVA.LANG.OUTOFMEMORYERROR WHEN TRYING TO CRE ATE A THREAD

APAR status

• Closed as program error.

Error description

• Error Message: java.lang.OutOfMemoryError: Failed to create a
  thread:
  .
  Stack Trace: N/A
  .
  

Local fix

• There are two possible workarounds:
  1) Reduce the maximum size of heap by using -Xmx option
  2) Reduce the maximum size of JIT scratch memory by using
  -Xjit=scratchSpaceLimit=<nnn>
  

Problem summary

• This issue shows mainly on platforms with limited virtual memory
  available to applications. For instance, on Windows 32bit, by
  default applications have a virtual address space of 2GB (the
  remaining 2GB is used by kernel). Java heap, VM data structures,
  classes, JIT data structures, etc. need to fit in this
  relatively small space. It is possible that at some point the
  application will exhaust this space, no thread can be created
  and therefore the application will terminate with the
  OutOfMemory message
  

Problem conclusion

• This defect will be fixed in:
  6.0.1 GA FP2
  .
  The JIT has been changed to monitor the remaining virtual memory
  space available to applications and reduce the amount of memory
  needed for compilations when remaining memory space is under a
  certain threshold. The compilations that need more memory than
  the threshold will be aborted which may affect performance.
  .
  To obtain the fix:
  Install build 20110517 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

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R260 PSY

     UP