Mike wrote:
Hello all,
I have scoured Google and the list archives, it seems
like somebody must have had this issue before but I
can't find any record of it.
(all on a single host)
Tomcat 5.5.12
Apache 1.3.28
mod_jk
Mandrake Linux 9.1
Struts 1.2.4
My problem is that, while using my application (via
browser), occasionally, I get the message
"HTTP Status 503 - This application is not currently
available"
This is a Tomcat produced error (it has the blue bars,
and has the Tomcat/5.5.12 signature), so I am pretty
sure the web server isn't having any problem
contacting Tomcat.
Generally what happens is I restart the server, wait
10-15 seconds (for Tomcat to start), load my first
action (which should forward to a JSP), and I get this
message. I hit reload on my browser 3-5 times (each
time getting the same 503) and then the page comes up.
(the login page to my application).
By itself this isn't a big deal, but the kicker is
that occasionally, I have to hit reload a couple times
in the middle of a session of using the application.
No messages come up in the mod_jk log or in the tomcat
log that I can see. The apache log shows the 503
errors.
Sorry, this is my first question to the list so I
don't know if I'm providing the needed information,
any guidance would be great!
Regards,
Mike K.
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As you might've guessed, check your tomcat logs. I've seen this behavior
when an underlying exception/error occurs. For example when you change
or place new jar onto the system (static, non-reloading classloaders),
and the JVM is confused by the unexpected change in class-file offsets.
Thats just one example.
ken
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