IV79547: NULLPOINTEREXCEPTION WHEN RUNNING JDMPVIEW !SNAPFORMAT OR !SNAPT RACE COMMANDS

APAR status

• Closed as program error.

Error description

• Error Message: Formatting trace using format dat files from
  TraceFormat.dat and J9TraceFormat.dat from
  c:\build\pwa6480sr2-20151023\sdk\jre\lib
  Problem running command:
  java.lang.NullPointerException: Null UtGlobalData found.
  .
  Stack Trace: N/A
  .
  The problem occurs when running the jdmpview !snapformat or
  !snaptrace commands on a system dump from a JVM which was run
  with the -Xtrace:none option.
  

Local fix

Problem summary

• The problem occurs when running the !snapformat or !snaptrace
  commands attempt to find JVM trace data structures in a dump
  from a JVM which was run with the -Xtrace:none option.
  

Problem conclusion

• The jdmpview tool has been updated to prevent the NPE from
  occurring and to print the following message instead:
  "Trace was not initialized, check dump VM options for
  -Xtrace:none"
  .
  This APAR will be fixed in the following Java Releases:
     8    SR2 FP10  (8.0.2.10)
     6 R1 SR8 FP20  (6.1.8.20)
     7 R1 SR3 FP30  (7.1.3.30)
     7    SR9 FP30  (7.0.9.30)
  .
  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

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R270 PSY

     UP

• R260 PSY

     UP