The database administrator (DBA) is the most important person for upgrade process. He involve in each steps, except application testing.
The DBA handle following task for database upgrade:
· Analyze current database status and make a plan for upgrade process.
· Meeting with everyone involved in the upgrade process and clearly defining their roles
· Performing test upgrades
· Scheduling the test and production upgrades
· Performing backups of the production database
· Completing the upgrade of the production database
· Performing backups of the newly upgraded Oracle Database production database
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