drop table t; Prompt Creating table with NO rowdependencies... create table t tablespace users as select * From dba_objects; update t set object_id = 1; alter system flush buffer_cache; @db commit; pause Press any key to select count(*) from t... select distinct ora_rowscn from t; pause Done. Press any key to continue... drop table t; Prompt Creating table WITH rowdependencies... create table t tablespace users ROWDEPENDENCIES as select * From dba_objects; update t set object_id = 1; alter system flush buffer_cache; @db commit; pause Press any key to select count(*) from t... select distinct ora_rowscn from t;