About this task
Use the following procedure to run a pre-upgrade tool to check whether you can upgrade from a particular release to the most recent release, or if you will be required to migrate data from the old system onto a newly-install system.
Note:
You can do the pre-upgrade check at any time and it does not require a maintenance window. You do not need to run a pre-upgrade tool if you are upgrading to service pack.
Note:
For migration from Release 8.1.3.2 or Release 10.1.0.0 (Legacy boot) to Release 10.2.1, do not run the pre-upgrade check. You can directly perform the migration procedures to Release 10.2.1.