The 'user.home' property is set to the JSM instance system directory. The SystemDefault.properties file located in the JSM instance system directory can be used to set Java system properties.

i5/OS and the JVM determine the values for Java system properties by using the following order of precedence:

• Command line

• QIBM_JAVA_PROPERTIES_FILE environment variable

• user.home SystemDefault.properties file

• /QIBM/UserData/Java400/SystemDefault.properties

• Default system property values.

If the first line of the SystemDefault.properties file starts with #AllowOptions, then JVM options and System properties can be used.

#AllowOptions
#
#!<studio-project id="20000000-000000" name="lansa">
# ....
#!</studio-project>
#
#!<studio-project id="20080101-000000" name="CustomChanges">
#
# JVM options
#
-verbose:sizes
-Xgcpolicy:gencon
# -Xcompactexplicitgc
# -Xtgc:excessiveGC,compaction
# -Xverbosegclog:GC-%Y-%m-%d-%H%M%S.XML
# -Xcompressedrefs
#
# System properties
#
user.timezone=GMT+10:00
os400.dir.create.auth=none
os400.file.create.auth=none
os400.file.encoding.ccsid=1208
com.ibm.tools.attach.enable=no
#
#!</studio-project>
#