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From "Len Popp" <len.p...@gmail.com>
Subject Re: is there a possibility to define the startup order for webapps?
Date Mon, 24 Apr 2006 15:57:04 GMT
A couple of other ideas:

Use a small shared class (in shared/lib) to keep track of whether the
database is running. The first webapp notifies this class when it's
ready, and the second webapp checks if the database is ready before
using it.

Or, just accept that database errors will occur during startup. This
is not a bad solution. From a user's point of view, when the server is
down all requests will return some kind of error, until the server is
back up and running. The only thing you can hope to gain is a better
error message for a few seconds during startup.
--
Len


On 4/24/06, David Smith <dns4@cornell.edu> wrote:
> This question comes up every so often and the answer is always no. The
> webapp load order cannot be relied upon. In your case, might I suggest
> the database webapp be run on a separate instance of tomcat?  Can the
> connection be done via TCP/IP?
>
>  --David
>
> SOA Work wrote:
> > Hi there,
> >
> > I'm currenttly using tomcat 5.x for running my webapps. Now I have the following
problem:
> >
> > I'm using an database system which runs as webapplication inside tomcat.
> > Another webapplication needs the database connection for startup.
> > Everytime I restart tomcat the server doesn't get up, because the second webapp
ist started before the database webapp.
> >
> > Is there a way to define the startup order of the webapplications deployed on a
server?
> > With wich system does tomcat choose the apps while startup? Could it be a possibility
to rename the folder of the webapps?
> >
> > thx
> > Dominik
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>
> --
> David Smith
> Network Operations Supervisor
> Department of Entomology
> Cornell University
> 2132 Comstock Hall
> Ithaca, NY 14853
> Phone: (607) 255-9571
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