I don't think that this will help much, but your problem seems like a multi-threading problem rather than a "lost request parameter" problem.

Have you tried inserting in some debug code to write request parameters to the log from the first servlet that receives them?

Regards,
Bob Feretich

Original message -------------------------------------------------------------
Subject: Tomcat lost request parameters
From: "Roberto Rios" <[EMAIL PROTECTED]>
Date: Wed, 22 Dec 2004 18:51:16 -0200
To: <[EMAIL PROTECTED]>


Hi,

I know that my subject sounds crazy, but I'm going nuts...

I have an application, 100% java (jsp 1.2 and servlet 2.3). This
application has more or less 1,5 years. So it is stable. I always used
tomcat as my web server (without apache because I don't have static html
to be served) with no problem.

We are using TC 4.1.31, with J2SDK1.4.2_03 on a W2K/SP4 box (Xeon 3.0Ghz
with 2GB mem).

At this time we had more or less 25 concurrent users. We were happy...

Recently, another department in company started to use the application.
So now we have more or less 100 concurrent users.

Since then the problems began raising. Most of then when we try to
insert/update data in database. Generally we receive errors telling that
we tried to insert null values into a not null field (BTW we are using
oracle 8.1.7 with JDBC - classes12.jar).

My point is that application was working. Nothing changed (except the
number of users). So, I'm sure that the fields are being properly
filled.

What I would like to ask you, is if someone has experienced this kind of
problem. I was wondering if tomcat could lost request parameters under
heavy traffic...

I don't have any prove that it actually lost something. As I said, I'm
just wondering. Maybe the JDBC...

Searching into the mailing list archive, I found a thread about
performance. I have changed the connector maxProcessors to 150 and also
add maxKeepAliveRequests="1" to it after reading it. Nothing change.

Does someone has some advice? I know that my posting is vague, but I
don't where to look anymore...

I was thinking about to do a tomcat upgrade (to 5.0.X).

TIA,

Bob




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