IV25299: JEXTRACT THROWS A JAVA.LANG.OUTOFMEMORYERROR

APAR status

• Closed as program error.

Error description

• Error Message: The jextract tool throws a java/lang/OutOfMemory
  error while running against a core file
  .
  Stack Trace: Exception in thread "main"
  java.lang.OutOfMemoryError
          at
  java.util.ArrayList.newElementArray(ArrayList.java:94)
          at java.util.ArrayList.growAtEnd(ArrayList.java:375)
  
          at java.util.ArrayList.add(ArrayList.java:158)
  
          at
  com.ibm.dtfj.corereaders.NewAixDump.readThread(NewAixDump.java:5
  53)
          at
  com.ibm.dtfj.corereaders.NewAixDump.readThreads(NewAixDump.java:
  484)
  
          at
  com.ibm.dtfj.corereaders.NewAixDump.readUserInfo(NewAixDump.java
  :409)
  
          at
  com.ibm.dtfj.corereaders.NewAixDump.extract(NewAixDump.java:637)
  
  
          at
  com.ibm.jvm.j9.dump.extract.Main.runJextract(Main.java:422)
          at com.ibm.jvm.j9.dump.extract.Main.main(Main.java:299)
  .
  

Local fix

Problem summary

• The problem is caused when the process that generated the core
  dump is badly damaged and the resulting core dump file is
  corrupted.
  

Problem conclusion

• This defect will be fixed in:
  7.0.0 SR3
  6.0.1 SR4
  6.0.0 SR12
  .
  The jextract tool has been updated to avoid going out of memory
  in this way. Depending on the corruption to the core dump
  jextract may still fail to read it but should exit with an error
  message instead.
  

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

     UP

• R600 PSY

     UP