Pre-Upgrade Information Tool Warnings and Recommendations for Oracle Database

Analyze any Pre-Upgrade Information Tool warnings before you upgrade to the new release of Oracle Database. For each item that the tool reports, it provides you with information about how to fix the issue or warning.

For more detailed information , refer to My Oracle Support note 472937.1 for information about installed database components and schemas. Refer to My Oracle Support note 753041.1 for information about diagnosing components with NON VALID status.