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Editorial Team
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Asked: 2026-05-31T16:21:17+00:00

I have a database that I am trying to connect to through SQL Plus.

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I have a database that I am trying to connect to through SQL Plus. I run this command from the command line:

sqlplus username/password@//hostname:port/sid

I use this connection string instead of using tsnames. The error I keep getting is 

ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor

The weird thing is that using the same connection information I can connect just fine through SQL Developer. I can see the tables, users, and everything else. Anyone know what could be going on?

P.S. I tried setting up tsnames but it just gave the same thing as using the connection string.

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1 Answer

  1. Editorial Team

    So my boss found the solution. Turns out the sid is different when connecting through SQL Plus then through SQL Developer. Seemingly in just this one case. I have no idea why this is but that was the reason. Very odd and I don’t understand why.

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