Hello to everyone, I have a application using Postgres DB and I going to create a new version on the same server... I would like duplicate my database with all structure and data like that, I can update this new version and keep the last one active during the release version. BUT, doesm't work =( First I create the backup, like that : pg_dump > db.out After I try to duplicate this one : So I create a other user "new-user" and I create a new db "new-db" (new-user is the owner new-db) next step : change 1 ligne on db.out file : Replace : "\connect - dbname" by "\connect - new-db" To finish, I try that : psql new-db< db.out Of course, it doesn't work, otherwise I won't disturb you =) Error message: 1: You are now connected as new user new-db 2: ERROR: Relation 'table1' already exists 3: ERROR: Relation 'table1' already exists 4: ... I tried a lot of think without success, Some helpsssssssss pleaseee. Thanks to the community, Areski