How to fix the Oracle error CLSR-01001: Unsupported open mode number is specified?

In this post, you’ll learn more about the Oracle ErrorCLSR-01001: Unsupported open mode number is specified with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

CLSR-01001: Unsupported open mode number is specified

Reason for the Error CLSR-01001: Unsupported open mode number is specified

Unsupported open mode is specified for mounting database.

How to fix the Error CLSR-01001: Unsupported open mode number is specified ?

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

Retry again with a valid open mode.