IV10068: SHARED CLASSES MEMORY IS NOT REUSED ON JDK STARTUP

APAR status

• Closed as program error.

Error description

• Error Message: When starting the JDK the Shared memory segment
  previously allocated for shared classes is not reused.
  .
  Stack Trace: N/A
  .
  using AIX and ipcs -am it is possible to see multiple shared
  memory segments.
  

Local fix

• Change the effective group ID (egid) to the same as the Group ID
  (GID)
  

Problem summary

• This problem is caused by the JVM comparing the GID of the user
  against the shared classes memory, but storing the EGID in the
  shared memory segment. Causing the JVM to create a new shared
  memory segment on startup.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR10
  6.0.1 SR1
  7.0.0 SR1
  5.0.0 SR14
  .
  The JVM has been updated to compare the EGID to the ID stored in
  the shared memory segment.
  .
  To obtain the fix:
  Install build 20111025 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:

  IV10072

Fix information

• Fixed component name

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R600 PSY

     UP

• R260 PSY

     UP