VMS Help JAVA, Qualifiers, /PROFILE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PROFILE[=file-name]
       -prof[: file-name]

    This option works only with JAVA_G.

    It starts the Java Runtime with Java profiling enabled.

    If no file name is specified, the profile results are placed in
    the file []JAVA.PROF.

    Otherwise, the profile results are placed in the specified file.