You plan to upgrade your production database from Oracle Database 11g to 12c. As part of the upgrade, you want to introduce new indexes and materialized views. You have already created a test system with Oracle Database 12c, having the same structure and data as the production database, along with new schema objects to be added to the production database.
You want to identify regressed SQL statements, if any, which may have been caused by schema changes and the change in the optimizer version.
Which two methods would you use to achieve this? (Choose two.)