Changing the JRE Package in Control-M/Server

This procedure describes how to change the JRE package from the default installation to a custom package in Control-M/Server on UNIX and Windows.

NOTE: Control-M/Server uses binaries that are common with Control-M/EM. Control-M/EM 9.0.20 uses JRE 1.8, therefore, you must define EM_JAVA_HOME and set it to JRE 1.8.

To change the JRE package:

1. Do one of the following:
   • UNIX: Define an alternative Java home directory with the parameters CTM_JAVA_HOME and EM_JAVA_HOME located in the .cshrc file.

   EXAMPLE: setenv CTM_JAVA_HOME /usr/new_JRE_11

   setenv EM_JAVA_HOME /usr/new_JRE_8

   • Windows: Define an alternative Java home directory with the parameters CTM_JAVA_HOME and EM_JAVA_HOME in system environment variables.

   EXAMPLE: CTM_JAVA_HOME C:\new_JRE_11

   EM_JAVA_HOME C:\new_JRE_8

   NOTE: (Windows only)If the CTM_JAVA_HOME and EM_JAVA_HOME parameters are defined after an upgrade, then you must delete the defined parameter before downgrading Control-M/Server.

2. Recycle Control-M/Server.