IBM SC34-6814-04 User Manual

Page 695

Except where explicitly stated as being for information only, you can

reset the values of these variables.

2. All environment variables and values are case sensitive, and should be

set as shown.

3. CICS ignores any values that it does not recognize as a valid option.

4. For the options beginning with X:

Some of these options are no longer documented in the CICS
documentation. However, they are still valid options and available to
DFHJVMAT.

These options should now begin with -X when specified in a JVM
profile. However, the hyphen is not included in the environment
variables used by DFHJVMAT, which still begin with X.

Table 34. JVM profile options available to DFHJVMAT

Option

Specifies

CICS_HOME

Home directory for CICS files on z/OS UNIX, including
CICS-supplied JAR files

CLASSCACHE_MSGLOG

Log file on z/OS UNIX for messages from master JVM
(with Version 1.4.2 of the SDK)

CLASSPATH_PREFIX,
CLASSPATH_SUFFIX

Prefix and suffix to standard class path

INVOKE_DFHJVMAT

For information only

JAVA_DUMP_OPTS

Set of Java dump options to obtain diagnostics for an
abend in the JVM

JAVA_HOME

Path to IBM SDK for z/OS, Java 2 Technology Edition
subdirectories and JAR files

JVMPROPS

Path and name of the JVM properties file

LIBPATH_PREFIX,
LIBPATH_SUFFIX

Prefix and suffix to library path

STDERR

Name of z/OS UNIX file for stderr output from the JVM

STDIN

Name of z/OS UNIX file for stdin

STDOUT

Name of z/OS UNIX file for stdout output from the JVM

USEROUTPUTCLASS

Name of a Java class that intercepts and redirects the
stdout and stderr output from the JVM.

VERBOSE

Level of information messages from the JVM

WORK_DIR

Working directory for CICS region on z/OS UNIX

Xcheck

Perform additional checks

Xdebug

Enable debugging support

Xinitsh

Initial size of the system heap

Xmaxe

, Xmaxf, Xmine, Xminf

Maximum and minimum heap expansion sizes and free
heap percentage sizes for the nonsystem heap

Xms

Initial size of the nonsystem heap

Xmx

Maximum size of the nonsystem heap

Xnoagent

Disable the old sun.tools.debug agent (if Xdebug
specified)

Xnoclassgc

Disable class garbage collection

Xoss

Maximum Java stack size for any thread

Chapter 22. Writing programs to customize JVMs

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