How to fix the Oracle error NNO-00800: Error: cannot read version from config database?

In this post, you’ll learn more about the Oracle ErrorNNO-00800: Error: cannot read version from config database with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNO-00800: Error: cannot read version from config database

Reason for the Error NNO-00800: Error: cannot read version from config database

Cause: The query for the region database version failed. The database may be shut down, or the tables may not exist in the schema specified in names.ora.

How to fix the Error NNO-00800: Error: cannot read version from config database ?

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

Action: Correct any access problems accordingly.