On Friday 09 June 2006 06:34 am, "Bert" <clemens.bertschler@xxxxxxxxx> thus communicated: --> Hi list --> What is the comment to add OIDs to a already existing table, or i have --> to recreate the table? --> --> Thanks, --> Clemens --> --> Well, according on \h ALTER TABLE on version 7.4.6 all you can do is SET WITHOUT OIDS. master=# \h alter table Command: ALTER TABLE Description: change the definition of a table Syntax: ALTER TABLE [ ONLY ] name [ * ] ADD [ COLUMN ] column type [ column_constraint [ ... ] ] ALTER TABLE [ ONLY ] name [ * ] DROP [ COLUMN ] column [ RESTRICT | CASCADE ] ALTER TABLE [ ONLY ] name [ * ] ALTER [ COLUMN ] column { SET DEFAULT expression | DROP DEFAULT } ALTER TABLE [ ONLY ] name [ * ] ALTER [ COLUMN ] column { SET | DROP } NOT NULL ALTER TABLE [ ONLY ] name [ * ] ALTER [ COLUMN ] column SET STATISTICS integer ALTER TABLE [ ONLY ] name [ * ] ALTER [ COLUMN ] column SET STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN } ALTER TABLE [ ONLY ] name [ * ] SET WITHOUT OIDS ALTER TABLE [ ONLY ] name [ * ] RENAME [ COLUMN ] column TO new_column ALTER TABLE name RENAME TO new_name ALTER TABLE [ ONLY ] name [ * ] ADD table_constraint ALTER TABLE [ ONLY ] name [ * ] DROP CONSTRAINT constraint_name [ RESTRICT | CASCADE ] ALTER TABLE name OWNER TO new_owner ALTER TABLE name CLUSTER ON index_name