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Database Networking (MOSC)

notorious ORA-12514

Oct 29, 2015 7:55AM edited Nov 3, 2015 6:19AM in Database Networking (MOSC) 8 commentsAnswered

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

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