Check the Upgrade With Post-Upgrade Status Tool
Review the upgrade spool log file and use the Post-Upgrade Status Tool, utlusts.sql.
               
The Post-Upgrade Status Tool is located in the path
                $ORACLE_HOME/rdbms/admin. The 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: Postupgrade Tasks for Oracle Database