Database Networking (MOSC)

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notorious ORA-12514

edited Aug 21, 2017 12:27PM in Database Networking (MOSC) 1 comment

I'm caught again and again by these ORA-12514 : TNS: Listener kann in Connect-Deskriptor angegebenen Service aktuell nicht auflösen

(listener does not currently know of service requested in connect descriptor).

A TNSPING <tnsaliasname> works.

Connecting / as sysdba works. But connecting via TCP/TNS doesn't work.

How can I solve this once and forever?

--

Christoph

Christoph, the tnsping would not be a useful test for ORA-12514 errors.

The former tests for LISTENER availability with respect to the connection string / alias being used while the latter error means the SERVICE_NAME value in the connection string is wrong OR not registered to said listener.

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