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Whats the difference?

Whats the difference?

Whats the difference?

Could someone explain the difference between tnsnames and sqlnet.ora (is that correct). From what I have picked up they are two different ways to identify the whereabouts of an oracle server. What is the exact purpose? Are these files mutually exclusive?

Excuse my ignorance!


RE: Whats the difference?

tnsnames.ora is a file containing definitions of database services, mapping service names to connection details.
E.g. if you do sqlplus fred/bassett@hounds it may take the name hounds and use the mapping info in tnsnames.ora to establish a connection via SQL*Net to the Oracle database instance with SID = HNDZ on server DOGS (or IP address or wherever).
This mapping information may also be supplied by an Oracle names server if one exists.
sqlnet.ora is a control file for SQL*Net that tells it where to look for its mapping information e.g. if a names server exists it may indicate that this should be tried first when establishing a connection, then if the service name is not defined there, the users local tnsnames.ora file should be checked. It may also contain optional diagnostic and other parameters.

RE: Whats the difference?

Thanks - that makes sense.


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