Data Auditing
When a table is audited, Oracle LSH never truly deletes data from the table, but records each change to each record over time, including deletion. Because the data remains in the table, with timestamps for each update, you can recreate the state of data in the table at any previous point in time in a data snapshot.
If a Table is used in such a way that an audit trail is unnecessary—for example, the Table is used only as a temporary staging area—then you can save space in the database by using a processing type without auditing.