How to refresh materialized views faster in 19c?

If materialized view fast refreshes are slow and you are using Oracle 19c, you can make a small change to optimize them.

Incremental statistics, are you doing it right?

If you implemented incremental statistics in releases before Oracle 12.2, you may not be taking full advantage of them. Learn how to do it!

How to add and drop disks efficiently in ASM?

Are you about to add, drop or replace disks in ASM? You may not be doing it in the most efficient way. Learn how.

Troubleshoot: confused optimizer

If the Oracle optimizer chooses inefficient execution plans on queries that use MAX or MIN, it is possible that this is bug 5611962.