How to fix the Oracle error ORA-16638: could not obtain instance status?

In this post, you’ll learn more about the Oracle ErrorORA-16638: could not obtain instance status with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16638: could not obtain instance status

Reason for the Error ORA-16638: could not obtain instance status

The broker could not determine whether the specified instance was running.

How to fix the Error ORA-16638: could not obtain instance status ?

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

See the next error message in the error stack for more detailed information. If the situation described in the next error in the stack can be corrected, do so; otherwise, contact Oracle Support Services.