v$datafile_header related mistake in 9i OCP book

hi

as mentioned in oracle 9i DBA FUNDAMENTALS-2 book
that when you put a tablespace in begin backup mode.the FUZZY column in V$datafile_header set to YES...............(it was the case before oracle 9i)

so to check that a datafile is in backup mode always refer V$BACKUP view.


refer following lines from metalink BUG No. 1158714

Query on v$datefile_header <b>used to</b> return NULL for Fuzzy column wrongly. It should return YES when any of the fuzzy flags are set. It <b>used to</b> return YES only for hotbackup-fuzzy, not for any other fuzzy.

Refrences :metalink noteid:353606.1