You didn't ask about materialized views, but they are one possible option when optimizing queries across dblinks. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Knight, Jon Sent: Monday, January 31, 2005 9:13 AM To: Oracle-L@xxxxxxxxxxxxx Subject: View vs. Synonym (across DBLink) While tuning a mammoth query, I noticed that one of the tables in the from clause is actually a view. It's defined as "select * from table_name@dblink". Is there any reason to believe I could improve performance by dropping the view and using a synonym instead? Thanks, Jon Knight -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l