When you migrated, did you also use your old INIT.ORA configuration file? If you installed Oracle with the default options, then there could be a large number of initialization parameters that are constraining the performance of your Oracle database. You'll need to adjust these accordingly for your database performance.
Dig deeper on Oracle database design and architecture
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.