General Upgrade Procedure Requirements
Important:
If you do not conform to these requirements, you will experience unpredictable results, possibly including corruption of your installation and data.
Perform the tasks in the upgrade documentation in the exact order in which they are presented. The task order is critical because your products have many inter-dependencies, including shared infrastructure and event driven architecture.
Perform the tasks in this guide for all upgrade paths unless the guide states that a particular task is required for certain upgrade paths only.
After you install the new products, you install the latest fixes. However, the upgrade procedure might take days or weeks to complete. Continue to check for and install new fixes regularly during the procedure.
Do not start any new products before the instructions in this guide tell you to do so, or your database components could become corrupted.