How to connect from Oracle 9i database on windows to sap database (orcle 8)

Hi,
I really need expert advice from anyone..I wud like to connect my Oracle 9i database running on windows platforms to SAP database (oracle 8) running on Unix platform.
Is there any special code to establish the connectivity...or we can simply use the ORacle net services(tnsnames.ora) file to connect to the SAP database??
I wud really appreciate any expert comments on this.
Thank you
Ratheesh

Hi Ratheesh
If you are able to create an ODBC connection from the Windows Oracle server to the SAP database then you can use Oracle Heterogeneous Services to query the SAP database from Oracle through a DB link. To configure Heterogeneous Services is quite easy. You put an entry into the SID_LIST_LISTENER part of the listener.ora file:
(sid_desc=
      (sid_name=hsql)                    
      (oracle_home=C:\oracle\ora92)
      (program=hsodbc)                    
    )  Then create an entry in your tnsnames.ora file to connect to your new listener service:
apmacnew =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = tcp)(HOST = cntrra20-lab20)(PORT = 1527))
    (CONNECT_DATA =
      (Service_name = apmacnew)
    (HS = ok)
  )And lastly create a database link using the tnsnames entry.

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