5.3 Selecting an Upgrade Procedure
If you are installing Oracle Tuxedo 22c Release 1 (22.1.0.0.0) on a platform that contains an earlier release of Oracle Tuxedo software, then make sure you read the following procedures carefully.

If you can shut down your application for the upgrade, then shut down your application and perform a simple upgrade. For instructions on performing a simple upgrade, see Performing a Simple Upgrade.
- Versions 12.1.1.0.0, 12.1.3.0.0, and 12.2.2.0.0 of Oracle Tuxedo
You can add the Oracle Tuxedo 22c Release 1 (22.1.0.0.0) software to existing Oracle Tuxedo domains without shutting down the existing applications, and you can also add new Oracle Tuxedo 22c Release 1 (22.1.0.0.0) application servers to those domains without shutting down the existing applications. For instructions on performing a hot upgrade, see Performing a Hot Upgrade.