3.1.1 General Upgrade Best Practices
Be aware of these guidelines as a best practice before you perform an upgrade.
If you have an existing Oracle Database installation, then do the following:
-
Record the version numbers, patches, and other configuration information
-
Review upgrade procedures for your existing installation
-
Review Oracle Database upgrade documentation before proceeding with installation, to decide how you want to proceed
Caution:
Always create a backup of existing databases before starting any configuration change.
Refer to Oracle Database Upgrade Guide for more information about required software updates, pre-upgrade tasks, post-upgrade tasks, compatibility, and interoperability between different releases.