How to fix the Oracle error ORA-16639: specified instance inactive or currently unavailable?

In this post, you’ll learn more about the Oracle ErrorORA-16639: specified instance inactive or currently unavailable with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16639: specified instance inactive or currently unavailable

Reason for the Error ORA-16639: specified instance inactive or currently unavailable

An attempt was made to perform an operation on an instance that was not running or was unavailable.

How to fix the Error ORA-16639: specified instance inactive or currently unavailable ?

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

Ensure that the instance specified in the operation is running and then retry the operation.