here is the output of V$WAITSTAT

Class Count Time
data block 3459 0
sort block 0 0
save undo block 0 0
segment header 1 0
save undo header 0 0
free list 0 0
extent map 0 0
bitmap block 0 0
bitmap index block 0 0
unused 0 0
system undo header 0 0
system undo block 0 0
undo header 48 0
undo block 0 0


Shailendra