Changing or updating the JRE of servers

Edit online

You can change the JRE of active servers by editing their configuration files.

About this task

Important: You must choose a Java version above the minimum supported version for your Deploy installation. This ensures maximum flexibility for future software upgrades, letting you update Deploy and Java in separate steps rather than simultaneously. For instance, Deploy 8.2.x supports Java 17 (minimum), 21, and 25, installing Java 21 prevents a mandatory concurrent Java upgrade when moving to the next major Deploy release.
Note:
  • Any certificates that you imported to the old JRE cacerts file must be imported into your new JRE cacerts file as well. SeeConfiguring SSL on Apache Tomcat and LDAP servers for more information.
  • Starting from v7.2.1, the keystore converter utility is no more needed, and Deploy handles any necessary conversions itself.

Procedure

  1. Install the new JRE.
  2. Stop the server.
  3. Update the location of the JRE in the following files:
    • In the file server_install/bin/set_env, set the value of the JAVA_HOME system variable to the location of the JRE.
    • In the file server_install/conf/server/installed.properties, set the value of the install.java.home property to the location of the JRE.
    Note: As a shortcut, you can delete the old JRE and move the new JRE into the location of the old JRE. In this case, you do not need to update the JAVA_HOME system variable and install.java.home property because they now point to the new JRE.
    Note: The value of the JAVA_HOME system variable must match the value of the install.java.home property.
    Note: If you are upgrading to Java 9 or above and are moving off Oracle Java to AdoptOpenJDK you must manually remove the -Djava.endorsed.dir entry from the server_install/bin/set_env file.
  4. If the server is running as a service on Windows
    1. Open the file server_install\bin\service\_service.cmd in a text editor.
    2. Edit the line that starts with the code set JAVA_HOME to the path to the new JRE.
    3. Open a command prompt as an administrator.
    4. Go to the server_install\bin\service folder.
    5. Remove the service by running the following command: 
      service.cmd remove service_name
      Use the name of the service for service_name. To find the service name, open the services view and find the entry that starts with Deploy. The service name is in parentheses in this entry.
    6. Reinstall the service by running the following command: 
      service.cmd install service_name
  5. Start the server.