How to fix the Oracle error TNS-01101: Could not find service name string?

In this post, you’ll learn more about the Oracle ErrorTNS-01101: Could not find service name string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-01101: Could not find service name string

Reason for the Error TNS-01101: Could not find service name string

Cause: The ervice name could not be resolved by name-lookup.

How to fix the Error TNS-01101: Could not find service name string ?

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

Action: Verify that the listener name or service name specified to LSNRCTL has the correct name and address defined in LISTENER.ORA or in TNSNAMES.ORA.

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