Jboss5.1.x---Apache 2.2.22 Integration-Service Temporarily Unavailable(503 304) -Response

Jboss5.1.x---Apache 2.2.22 Integration-Service Temporarily Unavailable(503
304) -Response

I am using Jboss 5.1.x , Apache 2.2.22 and Mod_jk.so(1.2.37) . When i am
trying to integrate between apache and jboss i am getting followed log in
access.log and error.log files.
access.log:-



127.0.0.1 - - [07/Sep/2013:12:48:10 +0530] "GET / HTTP/1.1" 304 -
127.0.0.1 - - [07/Sep/2013:12:48:11 +0530] "GET /favicon.ico HTTP/1.1" 404
209
127.0.0.1 - - [07/Sep/2013:12:48:14 +0530] "GET / HTTP/1.1" 304 -
127.0.0.1 - - [07/Sep/2013:12:48:15 +0530] "GET / HTTP/1.1" 304 -
127.0.0.1 - - [07/Sep/2013:12:48:19 +0530] "GET /sample HTTP/1.1" 503 323
127.0.0.1 - - [07/Sep/2013:12:48:20 +0530] "GET /sample HTTP/1.1" 503 323
127.0.0.1 - - [07/Sep/2013:12:48:24 +0530] "GET /sample HTTP/1.1" 503 323
127.0.0.1 - - [07/Sep/2013:12:48:25 +0530] "GET /sample HTTP/1.1" 503 323
Error.log :-
[Sat Sep 07 12:46:34 2013] [notice] Apache/2.2.22 (Win32) mod_jk/1.2.37
configured -- resuming normal operations
[Sat Sep 07 12:46:34 2013] [notice] Server built: Jan 28 2012 11:16:39
[Sat Sep 07 12:46:34 2013] [notice] Parent: Created child process 4864
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Child process is running
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Acquired the start mutex.
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Starting 64 worker threads.
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Starting thread to listen
on port 80.
Error.log :-
[Sat Sep 07 12:46:34 2013] [notice] Apache/2.2.22 (Win32) mod_jk/1.2.37
configured -- resuming normal operations
[Sat Sep 07 12:46:34 2013] [notice] Server built: Jan 28 2012 11:16:39
[Sat Sep 07 12:46:34 2013] [notice] Parent: Created child process 4864
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Child process is running
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Acquired the start mutex.
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Starting 64 worker threads.
[Sat Sep 07 12:46:34 2013] [notice] Child 4864: Starting thread to listen
on port 80.
I am using followed configuration files in apache side.
Mod-jk.conf:-
LoadModule jk_module modules\mod_jk.so
JkWorkersFile conf\workers.properties
JkMountFile conf\uriworkermap.properties
JkLogFile conf\mod.jklog
JkLogLevel error
JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories
JkRequestLogFormat "%w %V %T"
JkShmFile conf\mod.jkshm
JkMount /jkstatus/* jkstatus
JKMount /servlet* loadbalancer
JKMount /sample* loadbalancer
workers.prop:-
# Workers
worker.jkstatus.type=status
worker.jkstatus.read_only=True
worker.node-1.port=8109
worker.node-1.host=localhost
worker.node-1.type=ajp13
worker.node-1.lbfactor=1
worker.node-1.socket_timeout=5
worker.node-1.socket_keepalive=1
worker.node-1.connection_pool_timeout=300
worker.node-1.connection_pool_size=20
worker.node-2.port=8209
worker.node-2.host=localhost
worker.node-2.type=ajp13
worker.node-2.lbfactor=1
worker.node-2.socket_timeout=5
worker.node-2.socket_keepalive=1
worker.node-2.connection_pool_timeout=300
worker.node-2.connection_pool_size=20
# Load-balancing pools
worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=node-1,node-2,
worker.loadbalancer.sticky_session=1
# Worker list
worker.list=loadbalancer,jkstatus
---->
When i am trying to access with localhost/sample request i am getting
follwed response from browser window.
Service Temporarily Unavailable
The server is temporarily unable to service your request due to
maintenance downtime or capacity problems. Please try again later.
Could you tell me how to solve the above issue ?
Thanks and Regards, Narayan.