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  • Patrick R Gallagher thinks this is interesting:

All the connect string data will be contained in a file called TNSNAMES.ORA under the Oracle path on each client machine.

From

Cover of JD Edwards EnterpriseOne: The Complete Reference

Note

"TNSNAMES.ORA is a SQL*Net configuration file that defines databases addresses for establishing connections to them. " http://www.orafaq.com/wiki/Tnsnames.ora