IJ49165: -XMSO MIGHT NOT TAKE EFFECT WHEN IT IS SET USING AN ENVIRONMENT VARIABLE OR OPTIONS FILE

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  

Local fix

• Add -Xmso to the command line explicitly, without using the
  OPENJ9_JAVA_OPTIONS or IBM_JAVA_OPTIONS environment variables,
  or the options.default file.
  

Problem summary

• The -Xmso<size> command line option to set the native
  thread stack size is not applied to the main thread when the
  option is set using the OPENJ9_JAVA_OPTIONS or IBM_JAVA_OPTIONS
  environment variables, or the options.default file.
  This issue only affects the JVM process's main thread. The
  option is always applied correctly to additional application
  threads, regardless of how it is set.
  Refer to the following OpenJ9 issue for further information:
  https://github.com/eclipse-openj9/openj9/issues/16105
  

Problem conclusion

• The OpenJ9 JVM has been updated to ensure that the stack size
  specified by the -Xmso option is always applied to the main
  thread, regardless of how the option is added to the command
  line.
  .
  This APAR will be fixed in the following Releases:
  .
  IBM Semeru Runtimes
     11              11.0.21.0
     17              17.0.9.0
  IBM SDK, Java Technology Edition
     8    SR8 FP25   8.0.25.0
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  maintenance can be found at:
             https://www.ibm.com/support/pages/java-sdk
  

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