ORA-12514 error when connecting to the Oracle database through Toad

Are you receiving the ORA-12514 error when connecting to Oracle through Toad? Learn how to solve this Oracle error.

When I am trying to connect to the Oracle database through Toad, I am getting the error ORA:12514 TNS: listener does not currently know service requested in connect descriptor. Can you help me?
You need to look at your database listener's properties. On your database server, do "lsnrctl status". It will list the services the listener supports. The ORA-12514 error is saying that you specified a service that the listener knows nothing about.

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