When you install CICS, the CICS-supplied sample JVM properties files are placed in the directory /usr/lpp/cicsts/cicsts31/props/, where cicsts31 is the value that you chose for the CICS_DIRECTORY variable used by the DFHIJVMJ job during CICS installation.
JVMPROPS=/usr/lpp/cicsts/cicsts31/props/dfjjvmpx.props
where dfjjvmpx.props is the name of the sample JVM properties file that matches with the sample
JVM profile. If you are using the CICS-supplied sample JVM properties files, and only changing them by adding classes to the class paths, then you can leave this reference as it is. However, if you change the name or location of a JVM properties file, or create your own JVM properties file, you need to change the JVMPROPS option to specify the correct path name in all the JVM profiles that reference that JVM properties file. You also need to ensure that CICS has read and execute access on HFS for the JVM properties file and the directory containing it. Giving CICS regions permission to access HFS directories and files tells you how to do this.