How to fix the Oracle error TNS-03503: Could not initialize NL?

In this post, you’ll learn more about the Oracle ErrorTNS-03503: Could not initialize NL with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-03503: Could not initialize NL

Reason for the Error TNS-03503: Could not initialize NL

Cause: The network library could not be initialized.

How to fix the Error TNS-03503: Could not initialize NL ?

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

Action: This is an internal error which should not normally be visible. Ensure that memory is available to run the application and that there are no other operating system problems, and then attempt the command again.