FOR UPDATE cursors

We can use FOR UPDATE cursors in select statement for auditing purpose:

E.g: select * from per_all_people_f for update;

Here in this case..a employee details has been changed and the updation will be done by a scheduled concurrent program. So we can check the colums which are in wait for updation form this query

Check the below link for more info...
http://www.java2s.com/Tutorial/Oracle/0500__Cursor/UsingWHERECURRENTOF.htm