Database Networking (MOSC)

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Unable to connect to RAC database

edited Feb 7, 2017 4:00AM in Database Networking (MOSC) 5 commentsAnswered

We have Oracle 9i client on one server and trying to connect to Oracle 12c RAC database on another server. Fire wall has been burnt for port 1521 to have database connections and tnsnames.ora file on client has been updated to include the destination database service name. tns ping works but sqlplus <username>/<password>@&lt;service_name> fails with ORA-12170: TNS: Connect timeout occurred.Please let me know how to diagnose this issue. the same connection string from local server works fine.

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