Why should you care?

Production outages and slow systems are diagnosed with automatic indexing knowledge — not guesswork.

See it live — copy this example

Run these statements in SQL Developer or SQL*Plus against your lab PDB. Prefer a practice user — not SYS — for application SQL.

-- Autonomously managed indexes (supported releases)
SELECT * FROM DBA_AUTO_INDEX_CONFIG;

What happened?

• Automatic Indexing can create/capture indexes based on workload — review before enabling in prod.
• Follow the steps below — typing the code yourself is the fastest way to learn.

Practice next

1. Connect to your lab as a user with the needed privileges.
2. Run the read-only checks first.
3. Write the definition of this topic in your own words.
4. Change one literal in the example and re-run.
5. Write a second example from memory without looking.

Remember

You can explain Automatic Indexing in plain English. You ran at least one related command or query. You know one real system where it matters.

Automatic Indexing on a banking PDB

On-call DBA reviews automatic indexing during a health check before peak traffic.

Outcome: You know which view/command to open first.