Moving from DBCS to ExaCS — The Things Nobody Puts in the Migration Guide!!

If you're on Oracle DBCS today and wondering whether the move to ExaCS is worth it, this post is for you.

Short answer: yes. But the migration has details that will catch you off guard if you're not prepared.

I just published a full write-up of our DBCS → ExaCS migration on OraDiscuss. Everything I wish I'd known before we started:

🔹 Why we left DBCS, the real reasons, not the marketing version
🔹 The workload analysis step that saved us from a post-migration performance surprise
🔹 4 migration methods compared, including using a DB Link to clone a PDB directly across, no staging area needed
🔹 Why Data Guard is still my go-to for production database migrations
🔹 The DBCS-specific gotchas around TDE, RAC conversion, and backup configuration
🔹 What the AWR looked like after cutover, Smart Scan offloading in action

No theory. No documentation copy-paste. Just what actually happened.

#Oracle #Exadata #DBMigration #OCI #RMAN #DataGuard