How to fix the Oracle error ORA-16808: primary database is not open?

In this post, you’ll learn more about the Oracle ErrorORA-16808: primary database is not open with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16808: primary database is not open

Reason for the Error ORA-16808: primary database is not open

A prior attempt to open the primary database was disallowed because the primary had shut itself down earlier after being isolated from both the fast-start failover observer and the target standby database for more than FastStartFailoverThreshold seconds. It was assumed that a fast-start failover was underway. Since that time, re-contact with either the observer or the target standby database indicates that no such failover had actually occurred. The primary database can now be opened.

How to fix the Error ORA-16808: primary database is not open ?

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

Open the database by issuing the SQL*Plus ALTER DATABASE OPEN command.