Dump the databases on the current production system.
Before the upgrade, run dbcc commands (checktable, checkalloc, checkcatalog).
Alter the sybsystemprocs database.
Perform a pre-upgrade verification.
Upgrade the production system to version 15.0.
Run dbcc commands (checktable, checkalloc, checkcatalog) on the version 15.0 databases. Verify the dbcc log and error log.
Create a baseling for the version 15.0 configuration on the production system.
Perform user testing and verification.
