It is possible to roll back, or back out, the
Policy Management software to the previous release in a production environment. The overall sequence is the reverse of the upgrade sequence:
- Roll back MPE and MRA clusters.
- Roll back all CMP systems except for the last CMP server. (You cannot begin this operation until all MPE and MRA clusters are rolled back.)
- If you are rolling back to Release 11.5, use the System Maintenance page to roll back the last CMP server.
In the same way that you can roll back from an upgrade from any point of operator intervention, you can also upgrade from a rollback from any point of operator intervention. Whenever the action Continue Rollback is available, the action Resume Upgrade is also available.