...
- full backup of glast-oracle01 (to NFS disk)
- Restore into glast-oracle03
- Restore into glast-oracle04
- Brief (20 min) shutdown to make glast-oracle01 a "primary" server (may not be necessary)
- Make glast-oracle03 physical standby for glast-oracle01
- Make glast-oracle04 physical standby for glast-oracle01
- Shutdown Glast-apps
- Shutdown glast-oracle01.
- Make glast-oracle03 primary and change glast-oracle04 to be standby to glast-oracle02
- Repoint glast-oracle01 to glast-oracle03
- Restart Glast apps
Note up until the "POINT OF NO RETURN" we can abandon the procedure should any unanticipated problems arise. Once we have switched the glast applications to the new servers it will be difficult to switch back to the old servers.