Re: Does "preparing" a PreparedStatement really help?

Depending on the complexity of the statement, yes it does make a
difference.

You would have to measure it yourself. Your mileage would vary.

Dave
On 23-Feb-08, at 11:25 AM, Paul Tomblin wrote:

> Is there a performance advantage for preparing a PreparedStatement
> and keeping it around and using it thousands of times rather than
> making a new Statement every time?  How big?
>
> Back when I was doing Oracle Call Interface programming in C back in
> the mid to late 1980s, we were always told that pre-parsing a query
> was very expensive and so you tried not to do it very often, and
> once you'd done it, you stored them to reuse.  As I try to switch
> this system over to using a connection pool, trying to store
> PreparedStatements for each connection is fairly complicated and I'm
> wondering if it's worth it.
>
>
> --
> Paul Tomblin <ptomblin@xcski.com> http://blog.xcski.com/
> I wouldn't be surprised if I'd have to put garlic in the CD drawer
> to really get rid of it.
>              -- Arthur van der Harg on 'Gator'
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
>      choose an index scan if your joining column's datatypes do not
>      match