Hi Chandan,
You can try the following steps:
1)Create a DB link.For e.g:
CREATE DATABASE LINK dblinkname
CONNECT TO userid IDENTIFIED BY password
USING '(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=ipaddress)
(PORT=port no))
(CONNECT_DATA=
(SID=Oracle SID)))'
2)Once the db link is created you can create synonyms for the tables which you want to access:
create synonym synonym_name for remoteDB_sid.TABLENAME@DBLINK NAME
Let me know whether it works.
Thanks & Regards.
Prasanta