You are upgrading the DLP Enforce Server to 15.x from a prior version. You are able to connect to the Oracle DB using SQLPlus, but when you run the Symantec Data Loss Prevention 15.x Enforce Server set up MSI, you receive the error:
Error calling OCIServerAttach for database <//IPADDRESS:PORT/ServiceName>: ORA-12154: TNS:could not resolve the connect identifier specified.
Note that the values in the angle brackets will reflect those of your environment.
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
SQLNET.AUTHENTICATION_SERVICES = (NTS)
# NAMES.DIRECTORY_PATH= (TNSNAMES)