What could be causing this error "ORA-12519, TNS:no appropriate service handler found".
I have a process with a DB profile and in that profile there are multiple select statements querying Oracle. Could this be causing the error?
It is a DBA matter. The TNS listener is not able to connect to Oracle instance. It is most common problem when listeners services are not linked properly to instance. Give a shout to DBA, once it is resolved from their side try to use TOAD for Oracle or any other free oracle client to connect and check.
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