You are upgrading the DLP Enforce Server to 15.x/16.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/16.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)