Oracle: Unterschied zwischen DROP und UNUSE
Quelle: https://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:1381803609490 alter table T drop column.... alter table T set unused..... what different between those two alter command will impact rbs and redo? Followup April 4, 2002 - 7pm UTC: alter set unused -- thats a flag delete. no effect on undo/redo really . alter drop -- thats a rewrite, potentially big effect on undo/redo .