How to fix the Oracle error RMAN-20109: remote database has different database ID?

In this post, you’ll learn more about the Oracle ErrorRMAN-20109: remote database has different database ID with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

RMAN-20109: remote database has different database ID

Reason for the Error RMAN-20109: remote database has different database ID

Command RESYNC CATALOG FROM DB_UNIQUE_NAME was executed and the database ID of the remote database was different than the connected target database.

How to fix the Error RMAN-20109: remote database has different database ID ?

You can fix this error in Oracle by following the below steps

The remote database should have the same database ID as the database connected as the target database. Fix the connect identifier for the remote database and retry the command.