Testing a DB connection

stephen barncard stephenREVOLUTION2 at barncard.com
Wed May 26 12:27:24 CDT 2010


SELECT "any text"

if you don't get a revDB error, it's there.  But I've found there is
surprisingly little overhead in just opening and closing the database for
every query, unless one needs a rapid-fire sequence of queries. Then one
could program the open and close for the burst.

On 26 May 2010 09:50, Alex Adams <alex at a2technology.com> wrote:

> Does anyone have a simple technique for testing to see if a DB connection
> is
> still functioning before trying to use it to execute some SQL?
>
> I have an app that accesses hosted databases directly (postgres).  Users
> logon at app startup.  If they let the app sit for long enough, the
> connection to the DB server is dropped.  This is reasonable, but I want a
> simple way of testing to see if the connection has been dropped and if it
> has to reestablish the connection transparently before executing SQL
> statements.
>
> I need a simple isDBStillThere handler.  Is anyone doing anything similar?
>
> Thanks,
> --
> Alex Adams
>
> hawkVision ‹ tools for solving Wicked Problems
>
> (a)2 Technology Partners, Inc.
> 831-726-8013
> alex at a2technology.com
> hawkVisionInfo.wordpress.com
> universalConnector.wordpress.com
>
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-- 
-------------------------
Stephen Barncard
San Francisco



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