Hi, my db structure relays on the OIDs of tables (stored as OIDs of pg_class). However, 'pg_dumpall -o ...' seems to save the oids of all data but not the tableoids, so, when I restore data I get different tableoids than I had before! Is there anything I could do to backup and restore even the tableoids (besides stopping server and copying the files) ? Thank you Felix ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match