Re: how to show "System Unavailable" page when Tomcat is down

[David Smith]

To directly answer your question, essentially something has to be 
listening on port 80 even when Tomcat is down.  The only way I know of 
to do that is to put up some kind of proxy server with a error page.  I 
know Apache can be used that way, Squid looks like it could as well.

On the other hand, you could also replace your ODBC driver with a 
genuine type 4 driver and make your site much more reliable.  I think 
someone else already suggested that and I whole-heartedly agree.

--David
Stephen Huey wrote:
Though I'm capable of adding to the JSPs and servlets on an existing
site, I'm no web server guru, so I'm having a hard time with this
problem.  Our database vendor's ODBC driver has issues, so occasionally
we have to restart Tomcat (and maybe the driver) to get the website
running again, and since this is used by thousands of people every day,
they can get pretty annoyed when all they see in their browser is "Page
cannot be displayed" (and this can go on for anywhere from 5-15
minutes). 
We need a way to show some redirect requests for the website to some
static HTML page when Tomcat is down.  Since Tomcat is running our
website, I'm really not sure of how to provide a solution for that (we
don't have multiple application servers--just one web server and one
database server).  Any thoughts would be greatly appreciated!

Thanks,
Stephen
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