IX90190: OUTOFMEMORYERROR THROWN FROM CDRREADER.READBYTESFORSTRING

APAR status

• Closed as program error.

Error description

• Error Message: WARNING : OutOfMemoryError possibly caused by
  2147483416 bytes requested for object of class 000000003001BD00
  from memory space 'Generational' id=00000100105C72F0
  Cause of thread dump : Dump Event "systhrow" (00040000) Detail
  "java/lang/OutOfMemoryError" "Java heap space" received
  .
  Stack Trace: at
  com/ibm/rmi/iiop/CDRReader.readBytesForString(CDRReader.java:187
  0(Compiled Code))
  at
  com/ibm/rmi/iiop/CDRReader.readStringOrIndirection(CDRReader.jav
  a:197(Compiled Code))
  at
  com/ibm/rmi/iiop/CDRReader.read_codebase_URL(CDRReader.java:2519
  )
  at
  com/ibm/rmi/iiop/CDRReader.fast_read_value(CDRReader.java:1487(C
  ompiled Code))
  at
  com/ibm/rmi/iiop/EncoderInputStream.fast_read_value(EncoderInput
  Stream.java:966(Compiled Code))
  at
  com/ibm/rmi/io/IIOPInputStream.readValueType(IIOPInputStream.jav
  a:3326(Compiled Code))
  .
  N/A
  

Local fix

• N/A
  

Problem summary

• OutOfMemoryError is thrown from CDRReader.readBytesForString
  when receiving more than 2GB allocation request.
  

Problem conclusion

• CDRReader.readBytesForString method is modified to reject the
  requests greater than 2GB. Now, when
  CDRReader.readBytesForString requests 2GB or greater from the
  Java Heap a MARSHAL SystemException is thrown rather than
  attempting the allocation of 2GB which could result in the JVM
  throwing an OutOfMemoryError. The MARSHAL SystemException output
  will include request details and the stack trace.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR6 FP5   (8.0.6.5)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

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

  ORB

• Fixed component ID

  620700123

Applicable component levels