How to recovery data /table

If you drop a table or delete data mistakenly, then want rollback them, you can take the following methods:

  1.  Query the data before delete:

Select * from table_name as of timestamp date_before_delete.

Once you get the data before delete operation, how to recovery the data is needless to expatiate.

  2.  Flashback dropped table:

Flashback table table_name to before drop;