Hi all,

I have an Apache2.0 web server running with AJP load balancing with two Jboss 3.2.3 servers clustered in JDK 1.4.2. Session replication is working fine and everything is looks good.

Randomly we are getting "Internal Server Error" while request going through Apache2.0 web server. Please find the below mod_jk.log file

[Tue Mar 02 12:45:03 2004] loadbalancer 10.200.15.68 0.010000
[Tue Mar 02 12:45:03 2004] loadbalancer 10.200.15.68 0.020000
[Tue Mar 02 12:45:03 2004] loadbalancer 10.200.15.68 0.031000
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (738)]: ERROR: can't receive the response message from tomcat, network problems or tomcat is down. err=-1
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (1137)]: Error reading reply from tomcat. Tomcat is down or network problems.
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (1290)]: ERROR: Receiving from tomcat failed, recoverable operation. err=0
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (1309)]: sending request to tomcat failed in send loop. err=0
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (738)]: ERROR: can't receive the response message from tomcat, network problems or tomcat is down. err=-1
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (1137)]: Error reading reply from tomcat. Tomcat is down or network problems.
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (1290)]: ERROR: Receiving from tomcat failed, recoverable operation. err=1
[Tue Mar 02 12:45:07 2004] [jk_ajp_common.c (1309)]: sending request to tomcat failed in send loop. err=1
[Tue Mar 02 12:45:07 2004] loadbalancer 10.200.15.68 0.060000
[Tue Mar 02 12:45:07 2004] loadbalancer 10.200.15.68 0.030000


The log is clearly saying that response message is not coming back to client, so that only we are getting "Internal Server error" in browser.

Can anyone tell me what is solution to avoid "Internal Server Error" in browse. I want to know is there any configuration in Apache or Jboss?

Note: after getting this error, if i click any other link in my application I can able to proceed.