Solving connection errors with Oracle Database and SQL Developer

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Do you have problems connecting with Oracle Database? Do you want to stop/start the services?
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In this video, we will look at the following error messages:
Vendor code 17002: IO Error: The Network Adapter could not establish the connection.
ORA-12514, TNS:listener does not currently know of service required in connect descriptor

We will look at:
lsnrctl status
and
lsnrctl start

We will open the Services, and stop and start the listener and the service.
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Thanks. To add up on top of this, if one is trying via Command Promppt (cmd), try to run that by right clicking on Command Prompt, and select "Run as administrator". This may be helpful in first step

shivendrakmr
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hey i have downloaded sql 24.3 i am not getting any of those nether lsnrctl status or start in CMD or any thing regarding oracle in services what shall i do

sumaanx
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