Appendix B Procedure when Modifying the JRE Installation

This appendix describes the procedure to follow when modifying the JRE installation.

The JRE, of which the installation destination is specified in the JAVA_HOME environment variable when installing Fujitsu Enterprise Postgres, is used by the Server Assistant.

Therefore, when updating or reinstalling JRE after installing Fujitsu Enterprise Postgres, it is necessary to restart the Mirroring Controller arbitration process, therefore follow the procedure below to modify the JRE installation:

1. Stop the Mirroring Controller arbitration process.

   Refer to the Cluster Operation Guide (Database Multiplexing) for details.

2. Modify the JRE installation.

3. Change the installation environment to be used by Mirroring Controller.

   Set the JAVA_HOME environment variable to the installation destination of JRE 8, and use the mc_update_jre_env command to change the installation environment to be used by the Server Assistant.
   This procedure must be executed by the superuser.

   Example

   /opt/fsepv<x>assistant/bin is the installation directory where the Server Assistant is installed.

   $ su -
   Password:******
   # export JAVA_HOME="Jre8InstallDir"
   # /opt/fsepv<x>assistant/bin/mc_update_jre_env

4. Start the Mirroring Controller arbitration process.

   Refer to the Cluster Operation Guide (Database Multiplexing) for details.