IBM User Guide for Java V7 on Windows > Reference > Command-line options

-XX command-line options

JVM command-line options that are specified with -XX are not recommended for casual use.

These options are subject to change without notice.

• -XXallowvmshutdown
  This option is provided as a workaround for customer applications that cannot shut down cleanly, as described in APAR IZ59734.
• -XX:MaxDirectMemorySize
  Sets the maximum size for an nio direct buffer.
• -XX:ShareClassesEnableBCI
  This option is equivalent to -Xshareclasses:enableBCI.
• -XX:-StackTraceInThrowable
  This option removes stack traces from exceptions.
• -XX:[+|-]UseCompressedOops (64-bit only)
  This option enables or disables compressed references in 64-bit JVMs, and is provided to help when porting applications from the Oracle JVM to the IBM JVM. This option might not be supported in subsequent releases.

Parent: Command-line options

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