Changing or updating the JRE of servers#
You can change the JRE of active servers by editing their configuration files.
The new JRE must be from the same vendor as the current JRE. If you want to change the JRE vendor, contact support to obtain the KeystoreConverter tool.
Important: Beginning in version 6.2.2, the HCL™ Launch server and agent relays require a Java™ Runtime Environment (JRE) or Java Development Kit (JDK) version 8.
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.
Install the new JRE.
Stop the server.
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.
If the server is running as a service on Windows:™
Open the file server_install\bin\service\_service.cmd in a text editor.
Edit the line that starts with the code
set JAVA_HOMEto the path to the new JRE.
Open a command prompt as an administrator.
Go to the server_install\bin\service folder.
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
HCL Launch. The service name is in parentheses in this entry.
Reinstall the service by running the following command:
service.cmd install service\_name
Start the server.
Parent topic: Server settings and configuration