Hi, I am trying to connect from oracle to sqlserver using oracle oledb but when i try to execute the follwing command from sqlplus i am getting error: SQL> select * from "dbo"."EMPLOYEES"@MSOLEDB; select * from "dbo"."EMPLOYEES"@MSOLEDB * ERROR at line 1: ORA-12154: TNS:could not resolve service name the tnsnames.ora entry looks like this: MSOLEDB = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = ora2000)(PORT = 1521)) ) (CONNECT_DATA = (SID = GCORA2000) ) (HS=OK) ) sql server name is ora2000. what i have to change. Thanks Harvinder -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Harvinder Singh INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).