Create a copy of your actual production environment, upgrade the cloned environment, verify that the upgraded components work as expected, and then (and only then) upgrade your production environment.
Cloning your production environment for testing is recommended, but not required.
Note:
It is beyond the scope of this document to describe the cloning procedures for all components and operating systems. Cloning procedures are component and operating system-specific. At a high level, you install the pre-upgrade version of your component domain on a test machine, create the required schemas using the Repository Creation Utility (RCU), and perform the upgrade.Uncover and correct any upgrade issues.
Practice completing an end-to-end upgrade.
Understand the upgrade performance and how purge scripts can help.
Understand the time required to complete the upgrade.
Understand the database resource usage (such as temporary tablespace; PGA, and so on).
Note:
You can run the pre-upgrade Readiness Check on the cloned production environment to help identify potential upgrade issues with your data, but you must perform a complete test upgrade on a cloned environment to ensure a successful upgrade.Cloning an Oracle GoldenGate Monitor production environment is a two-part process.
Task 1: Clone (or copy) the existing production environment — referred to as A in the example below.
Task 2: Run the full upgrade on the cloned environment — referred to as B in the example below.
Task 2: Upgrade the cloned environment (B) to test the upgrade
Review the Pre-Upgrade Checklist to ensure that you have met all of the pre-upgrade requirements.
Install Oracle GoldenGate Monitor 12c (12.2.1.3.0) and any other product distributions into a new Oracle home on the test machine. See Installing the Oracle Data Integrator Software in Installing and Configuring Oracle Data Integrator.
Follow the standard upgrade procedures for your environment. Make sure that you select the appropriate upgrade procedures for your environment. See Introduction to Upgrading Oracle Data Integrator to 12c (12.2.1.3.0).
Complete all post-upgrade configuration tasks and verify that the upgraded components work as expected.