Check the Upgrade With Post-Upgrade Status Tool
Review the upgrade spool log file and use the Post-Upgrade Status Tool, utlusts.sql
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The Post-Upgrade Status Tool is a SQL script that is included with Oracle Database. You run the Post-Upgrade Status Tool in the environment of the new release. You can run the Post-Upgrade Status Tool at any time after you upgrade the database.
Parent topic: Post-Upgrade Tasks for Oracle Database