Tomcat keeps Crashing!!

[Shravan Shashikant <s0...@unix.tamu.edu>]

Hi there,
   I am using Tomcat to run servlets on my Apache Web server and they use
JDBC-ODBC bridge to talk with my Access database.Most of the times,Tomcat
crashes by itself,sometimes when I ask for information like calling a
servlet or other times when for no reason it crashes.
   I have installed Tomcat as a service and have specified it to be
restarted automatically after it fails but still it deosnt seem to restart.
   What's the problem?
Thanks in advance,
Shravan

----- Original Message -----
From: "ARNOD-PRIN Samuel" <sa...@marvel.ch>
To: <to...@jakarta.apache.org>
Sent: Thursday, August 31, 2000 12:39 PM
Subject: How to reload a class that is not a servlet ???


> I would like to reload a few classes when Tomcat is running.. is it
> possible ???
>
> thank you :)
>

Re: Tomcat with Expresso tools?

[Michael Rimov <ri...@centercomp.com>]

At 04:23 PM 8/31/2000 -0700, you wrote:
>I've been reading about Expresso tools (http://www.javacorporate.com)and
>they seem really cool! Does
>anyone here have personal experience with them? Are they good? Bad? Know of
>any other similar FREE tool kits?
>
>More importantly, do they work with a Linux/Tomcat/Apache setup?

I'm a prejudiced person here because I'm a major contributor to the project :-)

But, one of the core developers and myself both use Expresso with Tomcat 
for most of our development with no problem.

I think the best assets of Expresso are:

1 - Good fine-grain security
2 - A very encouraging development environment, especially for any bugs you 
come across.
3 - Very focused.  Not a lot of side-stuff.  Kind of a "just the facts 
ma'am" kind of library.
4 - Good "pre-canned" servlet for DB record maintenance.
5 - Automatic Table generation.  Noooooo  SQL scripts!

There's a lot of stuff going into the Expresso 2.0 release, including built 
in crypto usage,  better MVC architecture changes, an XML project, and 
more.   It's in Beta right now.

Now, that I'm done with my blatant plug....

Some other frameworks that can help you are:
Apache Turbine
Java's EJB stuff (JBoss apparantly works with Tomcat)
Apache Struts

Unfortunately, I don't know of others.

HTH,
                                                 -Mike

Tomcat with Expresso tools?

[Richard Diaz <ri...@yahoo.com>]

I've been reading about Expresso tools (http://www.javacorporate.com)and
they seem really cool! Does
anyone here have personal experience with them? Are they good? Bad? Know of
any other similar FREE tool kits?

More importantly, do they work with a Linux/Tomcat/Apache setup?

thanks!
Rich


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Re: Tomcat keeps Crashing!!

[Rachel Greenham <ra...@enetgroup.co.uk>]

Shravan Shashikant wrote:
> 
> Hi there,
>    I am using Tomcat to run servlets on my Apache Web server and they use
> JDBC-ODBC bridge to talk with my Access database.Most of the times,Tomcat
> crashes by itself,sometimes when I ask for information like calling a
> servlet or other times when for no reason it crashes.
>    I have installed Tomcat as a service and have specified it to be
> restarted automatically after it fails but still it deosnt seem to restart.

I suspect your problem is actually the JDBC-ODBC bridge and Access. Access
is not really a suitable database engine for deploying web applications, and
even if it was, the JDBC-ODBC bridge is in itself not really up to
prime-time deployment. I don't know of any class 4 JDBC drivers for Access,
but in any case I'd recommend moving your database over to something with a
bit more oomph - practically *anything* else would probably be more
suitable, eg: Postgres (which at least is free and available for Windows) up
to MS SQLServer (though, because they hate Java, they don't provide a JDBC
driver, but third parties do), Oracle and many more.

Other culprits might be the JVM. Which version of Java are you running? I
would take my pot-shot here at the general instability of Windows, but I
know plenty of people are running Tomcat on it without any problems at all.
:-) Still, they're running on NT4sp4-6 at least. Are you?

-- 
Rachel