Hi, it is the first time I have this kind of problem, I created a new 10g instance yesterday, in one of the schema I need to reference tables in another instance - TEST2, so I created a db link:

create database link ODW.REGRESS.RDBMS.DEV.US.ORACLE.COM
connect to testdb identified by testdb
using 'TEST2';

I swear I can reference the table without domain name in 10g before, like this:

select * from tab1@odw

but not this time, it seems that I have to use the full name:

select * from [email protected]

and it seems that if I wan to use tab1@odw, I have to create another db link:

create database link ODW
connect to testdb identified by testdb
using 'TEST2';

anyone has the same problem before?