How to fix the Oracle error PRCD-01022: Cannot add a second instance to a single instance database?

In this post, you’ll learn more about the Oracle ErrorPRCD-01022: Cannot add a second instance to a single instance database with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PRCD-01022: Cannot add a second instance to a single instance database

Reason for the Error PRCD-01022: Cannot add a second instance to a single instance database

Cause: Unable to add an instance to a single instance database.

How to fix the Error PRCD-01022: Cannot add a second instance to a single instance database ?

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

Action: Multiple instances are not supported for a single instance database. Convert to a RAC database if multiple instances are desired.