Database Networking (MOSC)

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ORA 12502 from App Server to Database via SQLPlus

edited Dec 18, 2019 4:07AM in Database Networking (MOSC) 3 commentsAnswered

Hi,

Please can you help?

I am trying to open a connection from an Informatica application server to an Oracle database. We have done this before but this time we are getting a problem ORA 12502.

We can TNSPING to the database listener ok. This works.

We cannot login to the database via SQLPlus. We get this message: “ORA-12502: TNS:listener received no CONNECT_DATA”.

We know we have connect data as the TNSPING works using the TNS alias name.

We recently got a firewall opened up that was supposed to fix this but still we are struggling and not sure how to diagnose the issue.

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