IPlanet 6.0 plug-in write_error and read_timeout errors

I'm having a lot of trouble with read timeouts and write errors in my production
environment. The environment is composed of two IPlanet web servers with one cluster
of two machines using Weblogic. The details follows:
Operating System (all machines): SunOS 5.8
WebLogic machines: WebLogic Server 6.1 SP2
JVM Java HotSpot Client VM build 1.3.1_01,
mixed mode
IPlanet machines: iPlanet WebServer Enterprise 6.0 SP4
Solaris VM (build Solaris_JDK_1.2.2_10,
native threads, sunwjit)
The iPlanet machines work as a redirector of requests. All requests that reach
them get redirected to the WebLogic cluster, via a plugin installed on both machines.
My problem is that a lot of read timeout/write error problems are occuring in
this process, in various situations. The majority happens while trying to fetch
static resources, but there are cases the error occurs while trying to access
web server applications.
From the IPlanet log, I selected the following errors, as examples:
Static resources:
[23/Mar/2004:00:05:06] failure ( 7877): for host 200.100.227.193 trying to GET
/weblogic/services/images/torpedo_bg.gif, wl-proxy reports: exception occurred
for backend host '10.112.46.27/7001': 'WRITE_ERROR [os error=32,  line 1379 of
proxy.cpp]: '
[23/Mar/2004:13:24:49] failure (21248): for host 200.233.164.3 trying to GET /weblogic/services/images/bt_smsmt_enviar.gif,
wl-proxy reports: exception occurred for backend host '10.112.46.27/7001': 'READ_TIMEOUT
[os error=22,  line 198 of Reader.cpp]: no read after 300 seconds'
[23/Mar/2004:13:24:49] failure (21248): for host 200.233.164.3 trying to GET /weblogic/services/images/bt_smsmt_enviar.gif,
wl-proxy reports: exception occurred for backend host '10.112.46.28/7001': 'READ_TIMEOUT
[os error=22,  line 198 of Reader.cpp]: no read after 300 seconds'
[23/Mar/2004:13:24:49] failure (21248): for host 201.4.214.97 trying to GET /weblogic/services/javascript/util.js,
wl-proxy reports: exception occurred for backend host '10.112.46.28/7001': 'READ_TIMEOUT
[os error=22,  line 198 of Reader.cpp]: no read after 300 seconds'
Applications:
[23/Mar/2004:00:02:50] failure ( 7877): for host 200.151.51.25 trying to POST
/weblogic/services/smsmtresult.jsp, wl-proxy reports: exception occurred for backend
host '10.112.46.28/7001': 'WRITE_ERROR [os error=32,  line 1379 of proxy.cpp]:
[23/Mar/2004:13:24:48] failure (21248): for host 200.211.229.10 trying to GET
/weblogic/services/smsmt.jsp, wl-proxy reports: exception occurred for backend
host '10.112.46.27/7001': 'READ_TIMEOUT [os error=22,  line 198 of Reader.cpp]:
no read after 300 seconds'
[23/Mar/2004:13:24:50] failure (21248): for host 201.1.97.212 trying to GET /weblogic/services/servlet/imageservlet,
wl-proxy reports: exception occurred for backend host '10.112.46.27/7001': 'READ_TIMEOUT
[os error=22,  line 198 of Reader.cpp]: no read after 300 seconds'
The log sometimes shows an interesting message also:
[23/Mar/2004:00:19:53] warning ( 8202): The server configuration may require more
file descriptors than the operating system provides. If you encounter PR_PROC_DESC_TABLE_FULL_ERROR
errors, you may wish to increase the operating system hard file descriptor limit
from 10633 to 10637 (see your operating system documentation) or decrease one
or more of the following settings: MaxFiles in nsfc.conf and ConnQueueSize, RqThrottle,
and MaxKeepAliveConnections in magnus.conf.
I've also checked the Weblogic nodes log, just to see if I could find an explanation
to those problems. No problems were logged at the time the IPlanet reported them.
I don't have any idea right now that could explain what's happening. Maybe the
Weblogic cluster is not providing the necessary resources in time? Or is there
something I could change in the IPlanet's configuration so that the frequency
of the errors diminish?
Any ideas will be greatly appreciated.
Thanks a lot for your time,
Alexandre

Hello Folks
In the obj.conf
You need to set this one in your context
I have an example below
<Object name="test" ppath="*/test/*">
Service fn="wl_proxy" WebLogicCluster="172.17.10.100:7001,172.17.10.101:7001" KeepAliveEnabled="false" PathTrim="" ErrorPage="/Web/html/error.html"
</Object>
Trust this one helps
Cheers
Manoj

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