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From David Cao <>
Subject RE: similar Problems with JDBC : connection lost after several ac cess
Date Wed, 30 Aug 2000 15:08:59 GMT
Thanks, but i am using my own connection pool, and the connection lost after
around 8 access to the database, the error message say can't find suitable
drive, after restart, it works find, after several access, it happen again.

Does some body have any idea about this? 


-----Original Message-----
From: Morahg, Yoav []
Sent: Wednesday, August 30, 2000 10:11 AM
To: ''
Subject: RE: similar Problems with JDBC : connection lost after several
ac cess

Just a thought... is your DBConnectionBroker set up to use autocommit or do
you need to commit changes manually. If the second is the case, you might
not see a new record in the database unless you committed it when you
created it.


Yoav Morahg
Software Engineer
Gist Communications
(212) 965-1999 xt 122

-----Original Message-----
From: Victor Chinnappan []
Sent: Wednesday, August 30, 2000 9:36 AM
Subject: Re: similar Problems with JDBC : connection lost after several

I came across a dbconnectionbroker class that does the
connection pooling et al. this is available at and is free. I also read that
there is one at Apache, which is called turbine.
Turbine is actually an assorted collection of App
Server utilities. I have been using
DBConnectionBroker. Most others say it is really good,
albeit i have a strange problem for now. But, again i
am trying to trace it to my code. 

The problem i am facing is that of not being able to
find a record that was just then created in a table.
When a user logs into our system, a sessionID is
created and further communication from the client
should be based on this session id. So when i try to
validate the session id just then created, it returns
false for simple query. Not sure why....
anyway, a lot of others are using this without any
problems... so should be fine...


--- David Cao <> wrote:
> Hi Stefan,
> I have a very similar problem, I wrote my own
> connection pool, after several
> success access to the database, the connection lost
> ! the error message
> says, con't find suitable driver. and once I restart
> the tomcat, it work
> fine !
> I am thinking it's a bug on my code, but now I am
> thinking is this a seting
> problem in tomact or JDBC? I will looking at this
> problem soon, pls keep let
> me know if you got any progress, I will also let you
> know if i got further
> information.
> Thanks.
> david
> -----Original Message-----
> From: Stefan Urban []
> Sent: Tuesday, August 29, 2000 6:14 AM
> To:
> Subject: Problems with JDBC
> Hi,
> I wrote a Servlet, which connects to a
> MySQL-Database. When I'm starting
> Tomcat
> it all works fine. But several Time later, the
> Servlet can't established the
> Database-
> connection again. I set the Classpath right, because
> when I'm stopping
> Tomcat, he shows me the rigth Classpath. When I'm
> starting Tomcat again, it
> all works fine again!!
> Why the hell it does not work several time later?
> Where should I set the
> Classpath?
> Thanx.
> -Stefan

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