[PERFORM] is a good practice to create an index on the oid?

[Edoardo Ceccarelli]

I am using the oid of the table as the main key and I've found that is 
not indexed (maybe because I have declared another primary key in the table)

it is a good practice to create an index like this on the oid of a table?
CREATE INDEX idoid annuncio400 USING btree (oid);
does it work as a normal index?
Thank you
Edoardo
---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]