5.8.2 Hot-Upgrade Procedure

This section provides an overview of the tasks for a “hot upgrade.”

1. Ensure your environment is set up as follows:
   • The configuration must have a backup MASTER machine.
   • The MODEL option in the configuration must be set to MP.
   • The MIGRATE option in the configuration must be set.
2. If upgrading an Oracle Tuxedo 9.1 machine, uninstall the Oracle Tuxedo system software as specified in Uninstalling Oracle Tuxedo.
3. Shut down the backup MASTER machine.
4. Install the Oracle Tuxedo 22c Release 1 (22.1.0.0.0) software on the backup MASTER machine and reboot the backup machine.
5. Migrate the MASTER machine running the old release to the backup MASTER machine running Oracle Tuxedo 22c Release 1 (22.1.0.0.0).
6. Shut down the machine that is now acting as the backup MASTER.
7. Install Oracle Tuxedo 22c Release 1 (22.1.0.0.0) on the old MASTER.
8. Using Oracle Tuxedo 22c Release 1 (22.1.0.0.0), reboot the machine that you shut down in step 7.

For more information about hot upgrades, see Hot-Upgrade Example.