After you upgrade Oracle Database, complete required postupgrade tasks, and consider recommendations for the new release.

• Check the Upgrade With Post-Upgrade Status Tool
  Review the upgrade spool log file and use the Post-Upgrade Status Tool, utlusts.sql.
• How to Show the Current State of the Oracle Data Dictionary
  To check the state of the Oracle Data Dictionary for diagnosing upgrades and migrations, use one of three methods.
• Required Tasks to Complete After Upgrading Oracle Database
  Review and complete these required tasks that are specified for your environment after you complete your upgrade.
• Recommended and Best Practices to Complete After Upgrading Oracle Database
  Oracle recommends that you complete these good practices guidelines for updating Oracle Database. Except where noted, these practices are recommended for all types of upgrades.
• Recommended Tasks After Upgrading an Oracle RAC Database
  Decide if you want to configure clients to use SCAN or node listeners for connections.
• Recommended Tasks After Upgrading Oracle ASM
  After you have upgraded Oracle ASM, Oracle recommends that you perform tasks such as resetting the Oracle ASM passwords and configuring disk groups.
• Recommended Tasks After Upgrading Oracle Database Express Edition
  Use DBCA or run manual scripts to install additional components into Oracle Database.
• Tasks to Complete Only After Manually Upgrading Oracle Database
  After you complete your upgrade, you must perform the tasks described here if you upgrade your database manually instead of using DBUA.