TNS:could not resolve the connect identifier specified

ERROR [08004] [Oracle][ODBC][Ora]ORA-12154: TNS:could not resolve the connect identifier specified

ERROR [IM006] [Microsoft][ODBC Driver Manager] Driver’s SQLSetConnectAttr failed

Sol:
These errors come by many way:
some specific solutions:-
1. check C:\Windows\SysWOW64\odbcad32.exe -> System Dsn
check that db is entered here.
if not ,’Add’ that db
if yes, ‘Configure’ and test connection with proper credentials

2. check tnsnames.ora for entry of that DB.