How to fix the Oracle error TNS-01107: A valid trace level was not specified?

In this post, you’ll learn more about the Oracle ErrorTNS-01107: A valid trace level was not specified with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-01107: A valid trace level was not specified

Reason for the Error TNS-01107: A valid trace level was not specified

Cause: Failed to specify a valid trace level for the LSNRCTL trace command.

How to fix the Error TNS-01107: A valid trace level was not specified ?

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

Action: Specify one of OFF, USER, ADMIN, or SUPPORT. Type “LSNRCTL help trace” for more information or consult Chapter 2 of this manual for an introduction to the concepts of tracing.