IV61567: UNABLE TO USE NON-PERSISTENT SHARED CLASS CACHE WHEN RUNNING WIT H -XSHARECLASSES:READONLY IF ASSOCIATED SHARED MEMORY HAS READ-O

APAR status

• Closed as program error.

Error description

• Error Message: JVMSHRC361E Error while attaching to the shared
  memory during open/createJVMSHRC336E Port layer error code =
  -524888JVMSHRC337E Platform error message: shmat : Permission
  deniedJVMSHRC028E Permission DeniedJVMJ9VM015W Initialization
  error for library j9shr27(11): JVMJ9VM009E J9VMDllMain failed
  .
  Stack Trace: N/A
  .
  

Local fix

• Modify permission of associated shared memory to make it
  read-write.
  

Problem summary

• If the permission of shared memory associated with a
  non-persistent shared class cache is read-only, then the JVM
  will not be able to attach to the shared class cache in
  read-only mode via -Xshareclasses:readonly.
  

Problem conclusion

• The JVM has been updated to attach to the shared memory
  associated with the shared class cache as read-only when
  -Xshareclasses:readonly is specified.
  .
  This APAR will be fixed in the following Java Releases:
     7 R1 SR1 FP1   (7.1.1.1)
     7    SR7 FP1   (7.0.7.1)
     6 R1 SR8 FP1   (6.1.8.1)
     6    SR16 FP1  (6.0.16.1)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, Java maintenance is available
  from:
             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

• R600 PSY

     UP