How to fix the Oracle error CLSR-01007: Connection to database was not established?

In this post, you’ll learn more about the Oracle ErrorCLSR-01007: Connection to database was not established with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

CLSR-01007: Connection to database was not established

Reason for the Error CLSR-01007: Connection to database was not established

Connection to database is failed to establish.

How to fix the Error CLSR-01007: Connection to database was not established ?

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

Make sure connection and environment are properly set up.