Re: JDBC Connection pooling

["Mike Silvers" <msilvers@xxxxxxxxxxx>]

Marady,

I originally tried to get an example of JNDI JDBC connections working.  I am
using servlets and I was having a problem.  Part of the problem is my
understanding of LDAP.  I read some about it and played with it, but when
there is a problem with implementation, I need more experience than I have.
I have since jumped on the JDBC pooling.  This seems to work better with my
experience & direction for this project.  I wish I had more time to learn
about LDAP, but you know how that goes....the guy who pays the bills is the
guy who directs my path....

If you are interested in what I have so far, let me know and I can share it
with you.

Mike

----- Original Message -----
From: <MaradyPrak@BigLots.com>
To: <java400-l@midrange.com>
Sent: Monday, March 25, 2002 2:59 PM
Subject: Re: JDBC Connection pooling


>
> Dave,
>
> This is great if I have a long running application that needs to hit the
database back end multiple times.  Do you know
> of a way to incorporate datasource connection pooling with JNDI or
something similar.  What I'm interested is something
> that always running and can give out connections to the database through
the JNDI look-up.  So, my other applications
> running can get connection from the same central naming directory
services.  This way all  other applications  do not
> have to insatiate the classed with the connections and datasource up-front
every time.  For example, like the Websphere
> Application server, it have a central datasources, an all the applications
can use it when ever and never have to worry
> about creating datasource or connection to the database for every
execution.  I don't know if I'm explaining my-self
> clearly or not.  But let me know if you want me to explain it in another
way.
>
>
> Kind Regards,
>              Marady Prak - Technical Specialist/Administrator, Himalaya
System
> Big Lots, Inc
> 300 Phillipi Road Columbus, OH 43228
> Phone: 614-278-7186   Fax: 614-278-4769        http://www.eonestopshop.com
>
>
>
>
>                     David Gibbs
>                     <dgibbs@mks.com>         To:     "'JAVA400 List'"
<JAVA400-L@midrange.com>
>                     Sent by:                 cc:
>                     java400-l-admin@mi       Subject:     Re: JDBC
Connection pooling
>                     drange.com
>
>
>                     03/25/2002 01:21
>                     PM
>                     Please respond to
>                     java400-l
>
>
>
>
>
>
> Mike Silvers said:
> > Does anyone have a working example of using JDBC connection pooling?  I
> > have done several searches on the web and found article after article,
> > but I would like to see a real working example of JDBC connection
> > pooling..
>
> Yes, as a mater of fact, I just figured this out a few weeks ago.
>
> I think that the reason you couldn't find much is, connection pooling is
not
> part of Java 2 1.3 (I think).  It might be in 1.4, but I'm not sure.  JDBC
> connection pooling is database and/or environment specific.
>
> Here's what I did to create a JDBC connection pool using JT400...
>
> // build your connection pool ...
>
> AS400JDBCConnectionPoolDataSource dataSource =
>            new AS400JDBCConnectionPoolDataSource(hostId, userid,
password);
> dataSource.setLibraries(fileLibrary);
> dataSource.setTransactionIsolation("none");
> AS400JDBCConnectionPool pool = new AS400JDBCConnectionPool(dataSource);
> pool.setMaxConnections(poolSize);
>
> // to get a connection
> Connection con = pool.getConnection();
>
> // to give the connection back
> con.close();
>
> david
>
> --
> David Gibbs
> Sr. Software Engineer / R&D / MKS Inc., www.mks.com
> Lombard, IL, USA; tel: 630-495-2108; fax: 630-495-3591
> Build Better Software
>
>
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