Constraint types, Perfmon utility on NT

Hi guys,

What is the meaning of following Constraint types which I saw in dba_constraints

C
O
P
R
U
V

I think all know about C, P, R and U but what about O and V?

Secondly, what is the exact use of perfmon utility of NT and how can I use it for performance monitoring of Oracle Database. I have never found it very useful and much enjoying.

Thanks in Adv.

Here is the explanation:

C (check constraint on a table)

P (primary key)

U (unique key)

R (referential integrity)

V (with check option, on a view)

O (with read only, on a view)

Sam

Type of constraint definition:
C (check constraint on a table)
P (primary key)
U (unique key)
R (referential integrity)
V (with check option on a view)
O (with read only, on a view)


- Magnus

Thanks Sambavan,

if someone could answer the perfmon part plz...

Thanks,