Hi,
Sorry for the confusion. What I meant was querying from remote database located in different machine. For example:
sqlplus xuser/xuser@DB_ONE
sqlplus>select count(*) from xuser.mytable@DB_TWO;
From local instance DB_ONE, I would like to query info from remote database DB_TWO without creating DBlink. I've read this somewhere, we could do it using trusted connection or truss if I'm not mistaken.
Rgds,
Suhaimi