Apache tomcat 503 error.

Hi folks!

We have a Apache tomcat load balanced configuration. We are doing some performance testing before moving to Production.

This is the error we get while testing:
java.io.IOException: Server returned HTTP response code: 503 for URL: http://nte
cmst1:80/drs/drs?type=PortalDocumentListByMRN&userId=nurse1&mrn=1194826
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon
nection.java:1174)

Can anyone help me with resolving this?

An error 503 means: "HTTP 503 is the standard HTTP error that means "Service Unavailable."

Is the service running??

Yes, it is running.

the error shows up a couple of times while testing is on!!!

any clue?

Thanks

Maybe the service can't cope with the load you are testing with??

Maybe you need to setup a second server with a Apache acting as a loadbalancer in the front, so that you have two severer to handle the requests??

Oops....I don't think we would want to do it!

Is it possible because of the Apache queue would be smaller than tomcat.
Can i tune some parameters and make it working?

After fixing this issue....Now we see the 502 error....!!!
any clues?

HTTP Error 502 - Bad gateway

Is there anyway to resolve this error?