HttpClusterServlet defaultServer List

I'm trying to use HttpClusterServlet to access a serlet deployed in a 2-wls cluster.Instead of doing this on the proxy server, as indicated in WLS document (and everything works)weblogic.httpd.register.someservlet=weblogic.servlet.internal.HttpClusterServletweblogic.httpd.initArgs.somesevlet=\ defaultServers=clusterserver1:7001|clusterserver2:7001I tried to supply the DNS name for the entire cluster, which I think is the logical thing to do to truly get fail-over and load-balancing:weblogic.httpd.register.someservlet=weblogic.servlet.internal.HttpClusterServletweblogic.httpd.initArgs.somesevlet=\ defaultServers=clusterDNSName:7001I was running the proxyserver on WIN2K. The cluster itself is deployed on Solaris machines.After the WLS instance on clusterserver1 was shutdown, HttpClusterServlet didn't seem to failover to clusterserver2, which was still running.The failover works when I use regular java application connecting to t3://clusterDNSName:7001. So, I think something is not right in HttpClusterServlet.Any one has any insights?I'm using WLS5.1/sp8Thanks.Quing

That depends. Usually you just specify the IP addresses (all of them) that
 you have licenses for and let the cluster servlet figure out the rest.
 Also, I would imagine it to be rare that a site would have a pool of WL app
 servers that is both significant in number and dynamic in composition and
 yet have only one proxy that can not be taken off-line.
 Peace,
 Cameron Purdy
 Tangosol, Inc.
 http://www.tangosol.com
 +1.617.623.5782
 WebLogic Consulting Available
 "Quing Chao" <[email protected]> wrote in message
 news:[email protected]...
 >
 > So, next time I add an new instance of WLS into the cluster I'll need to
 update the
 > weblogic.properties file on the proxy server?
 > Thanks.
 >
 > "Cameron Purdy" <[email protected]> wrote:
 > >The DNS thing isn't necessary. In fact, it has its own set of nasty
 > >problems.
 > >
 > >Just use the IP or name of the host with the HttpClusterServlet and it
 will
 > >redirect to the cluster. Otherwise, failover won't exist.
 > >
 > >Peace,
 > >
 > >--
 > >Cameron Purdy
 > >Tangosol, Inc.
 > >http://www.tangosol.com
 > >+1.617.623.5782
 > >WebLogic Consulting Available
 > >
 > >
 > >"Quing Chao" <[email protected]> wrote in message
 > >news:[email protected]...
 > >> I'm trying to use HttpClusterServlet to access a serlet deployed in a
 > >2-wls cluster.Instead of doing this on the proxy server, as indicated in
 > >WLS
 > >document (and everything
 >
 >works)weblogic.httpd.register.someservlet=weblogic.servlet.internal.HttpClu
 s
 > >terServletweblogic.httpd.initArgs.somesevlet=\
 > >defaultServers=clusterserver1:7001|clusterserver2:7001I tried to supply
 > >the
 > >DNS name for the entire cluster, which I think is the logical thing to do
 > >to
 > >truly get fail-over and
 >
 >load-balancing:weblogic.httpd.register.someservlet=weblogic.servlet.interna
 l
 > >..HttpClusterServletweblogic.httpd.initArgs.somesevlet=\
 > >defaultServers=clusterDNSName:7001I was running the proxyserver on WIN2K.
 > >The cluster itself is deployed on Solaris machines.After the WLS instance
 > >on
 > >clusterserver1 was shutdown, HttpClusterServlet didn't seem to failover
 > >to
 > >clusterserver2, which was still running.The failover works when I use
 > >regular java application connecting to t3://clusterDNSName:7001. So, I
 > >think something is not right in HttpClusterServlet.Any one has any
 > >insights?I'm using WLS5.1/sp8Thanks.Quing
 > >
 > >
 >

Similar Messages

Problem working with HttpClusterServlet

hi:
 this is the first time i work with weblogic6.1(NT platform) cluster.
 i config the DefaultWebApp as web application which will proxy requests to
 my cluster which consists of two weblogic server running on the same host
 (http://localhost:7001 and http://localhost:7003).
 my web.xml before is as floowing(before it works as a proxy)
 <?xml version="1.0" ?>
 <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
 1.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
 <web-app>
 <welcome-file-list>
 <welcome-file>index.html</welcome-file>
 </welcome-file-list>
 </web-app>
 but when i modify it as following as a proxy to my cluster
 <?xml version="1.0" ?>
 <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
 1.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
 <web-app>
 <welcome-file-list>
 <welcome-file>index.html</welcome-file>
 </welcome-file-list>
 <servlet>
 <servlet-name>HttpClusterServlet</servlet-name>
 <servlet-class>
 weblogic.servlet.internal.HttpClusterServlet
 </servlet-class>
 <init-param>
 <param-name>defaultServers</param-name>
 <param-value>
 bea:7003:7004
 </param-value>
 </init-param>
 </servlet>
 <servlet-mapping>
 <servlet-name>HttpClusterServlet</servlet-name>
 <url-pattern>/</url-pattern>
 </servlet-mapping>
 <servlet-mapping>
 <servlet-name>HttpClusterServlet</servlet-name>
 <url-pattern>*.jsp</url-pattern>
 </servlet-mapping>
 <servlet-mapping>
 <servlet-name>HttpClusterServlet</servlet-name>
 <url-pattern>*.htm</url-pattern>
 </servlet-mapping>
 <servlet-mapping>
 <servlet-name>HttpClusterServlet</servlet-name>
 <url-pattern>*.html</url-pattern>
 </servlet-mapping>
 <init-param>
 <param-name>DebugConfigInfo</param-name>
 <param-value>ON</param-value>
 </init-param>
 </web-app>
 there's no response anymore , no error .
 there's little docs available and i need your help
 regards


Hi.
 A couple of suggestions:
 1. Clusters must use the same port number. If you are running a cluster on a
 single machine this means that your machine must be multihomed and each member
 of the cluster must bind to a unique IP address. Your other alternative is to
 use multiple machines. I don't believe your configuration will work for a
 cluster.
 2. you don't have yoru default servers listed correctly in your web.xml
 file. To specify 2 different servers you need to specify each server
 separated by a '|' character as follows:
 myserver1:70017001|myserver2:7001:7002 The second port number is for SSL
 communications. In your xml file you are only specifying a single server.
 Hope this helps,
 Michael
 daniel wang wrote:
 > hi:
 > this is the first time i work with weblogic6.1(NT platform) cluster.
 > i config the DefaultWebApp as web application which will proxy requests to
 > my cluster which consists of two weblogic server running on the same host
 > (http://localhost:7001 and http://localhost:7003).
 >
 > my web.xml before is as floowing(before it works as a proxy)
 >
 > <?xml version="1.0" ?>
 > <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
 > 1.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
 > <web-app>
 > <welcome-file-list>
 > <welcome-file>index.html</welcome-file>
 > </welcome-file-list>
 >
 > </web-app>
 >
 > but when i modify it as following as a proxy to my cluster
 >
 > <?xml version="1.0" ?>
 > <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
 > 1.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
 > <web-app>
 > <welcome-file-list>
 > <welcome-file>index.html</welcome-file>
 > </welcome-file-list>
 > <servlet>
 > <servlet-name>HttpClusterServlet</servlet-name>
 > <servlet-class>
 > weblogic.servlet.internal.HttpClusterServlet
 > </servlet-class>
 >
 > <init-param>
 > <param-name>defaultServers</param-name>
 > <param-value>
 > bea:7003:7004
 > </param-value>
 > </init-param>
 >
 > </servlet>
 >
 > <servlet-mapping>
 > <servlet-name>HttpClusterServlet</servlet-name>
 > <url-pattern>/</url-pattern>
 > </servlet-mapping>
 >
 > <servlet-mapping>
 > <servlet-name>HttpClusterServlet</servlet-name>
 > <url-pattern>*.jsp</url-pattern>
 > </servlet-mapping>
 >
 > <servlet-mapping>
 > <servlet-name>HttpClusterServlet</servlet-name>
 > <url-pattern>*.htm</url-pattern>
 > </servlet-mapping>
 >
 > <servlet-mapping>
 > <servlet-name>HttpClusterServlet</servlet-name>
 > <url-pattern>*.html</url-pattern>
 > </servlet-mapping>
 > <init-param>
 > <param-name>DebugConfigInfo</param-name>
 > <param-value>ON</param-value>
 > </init-param>
 >
 > </web-app>
 >
 > there's no response anymore , no error .
 >
 > there's little docs available and i need your help
 >
 > regards
 Michael Young
 Developer Relations Engineer
 BEA Support

Proxying with HttpClusterServlet

Hi,
          I'm using a multihomed NT Server with WLS 6.0. I have one domain configured
          with an admin server and two managed servers which are clustered. I
          configured a second domain with one server and a web app deployed with
          HttpClusterServlet (I extracted the HttpClusterServlet classes from
          weblogic.jar and deployed them in the web app). I edited web.xml adding
          HttpClusterServlet and the associated parm (defaultServers) as described in
          the doc.
          I'm testing load balancing of a servlet deployed on both managed servers.
          Load balancing works fine as I see the servlet execution alternating from
          one server to the next.
          My problem is duplicating this set up on a second NT Server. With the
          exception of IP addresses, hardware and the WLS 6.0 installation, the boxes
          are identical. But, on this box the servlet is not load balanced. The
          servlet always runs on the first server in the list. I have to admit I'm
          stumped! Short of reinstalling WLS, I have tried everything I can think of
          without success.
          My question is how can I debug HttpClusterServlet to figure out why the
          servlet is not being load balanced?
          Your help would be much appreciated.
          Mike


          Ok, I did find and set the DebugConfigInfo to ON. When I run the servlet via the
          proxy I get the following
          results:
          Server with load balancing not working:
          Query String: __WebLogicBridgeConfig
          Dynamic Server List:
          Host: xxx.yy.zz.179 Port: 7019
          Static Server List:
          Host: xxx.yy.zz.179 Port: 7019
          Host: xxx.yy.zz.186 Port: 7019
          CookieName: JSESSIONID
          Server with load balancing working:
          Query String: __WebLogicBridgeConfig
          Dynamic Server List:
          Host: xxx.yy.zz.75 Port: 7019
          Host: xxx.yy.zz.74 Port: 7019
          Static Server List:
          Host: xxx.yy.zz.74 Port: 7019
          Host: xxx.yy.zz.75 Port: 7019
          CookieName: JSESSIONID
          Obviously, the second server is not in the dynamic server list. Any ideas????
          Mike
          >
          >

Load balancing with HttpClusterServlet

 Hi,
 Could someone plz tell me how HttpClusterServlet achieves
 load balancing?
 Suppose there are 3 servers A,B,C (ordered list) in a cluster.
 When the servlet the receives the request for the 1st time will
 direct it to server A and let B be the secondary. Now, when the
 same client makes a 2nd request the servlet reads the cookie and
 directs the request to server A.
 Where is load balancing been achieved here?
 Or is it this way LB ( load balancing ) is done:
 if any other client (other than the one mentioned above) makes a
 request it is directed to server B (since it is the 2nd server
 in the cluster)
 thanx


It is the second option you mention.
 -- Anand
 "pradeep bhat" <[email protected]> wrote in message
 news:3ca0409e$[email protected]..
 >
 > Hi,
 > Could someone plz tell me how HttpClusterServlet achieves
 > load balancing?
 >
 >
 > Suppose there are 3 servers A,B,C (ordered list) in a cluster.
 > When the servlet the receives the request for the 1st time will
 > direct it to server A and let B be the secondary. Now, when the
 > same client makes a 2nd request the servlet reads the cookie and
 > directs the request to server A.
 >
 >
 > Where is load balancing been achieved here?
 >
 >
 > Or is it this way LB ( load balancing ) is done:
 >
 > if any other client (other than the one mentioned above) makes a
 > request it is directed to server B (since it is the 2nd server
 > in the cluster)
 > thanx
 >
 >

Serious HttpClusterServlet problem

Hi all,
 I have come across yet one more cluster problem.
 Here is as precise description as I can come up with; we are running
 WebLogic 5.1 SP6 on Solaris.
 Architecture
 Weblogic server (A) running as proxy to a cluster (configured with
 HttpClusterServlet) and
 2 Weblogic servers (B & C) running in cluster, the app is protected -
 sign-on required.
 Scenario:
 All 3 server are up and running.
 1) A client connects via proxy to server B, is authenticated and logged
 in. Session is established.
 2) Client interacts with server B, session gets populated with some
 basic objects.
 3) Server B is killed.
 4) Client attempts to send a request to server B. Problem #1 - Even
 though this request from browser gets
 to the proxy and the browser's status says "receiving data from
 ...", nothing gets propagated to server C.
 Now the user clicks Stop button on the browser and sees "Transfer
 interrupted..." page generated by the browser.
 Client hits back button, the previous page gets loaded fine. Now the
 client attempts to send the same request
 again and this time it gets through the proxy to the server C which
 has a replicated session. Things are fine but
 this initial failure troublesme as it happens ALL the time when
 scenario is repeated. If the user does not hit the
 stop button, "document conainted no data...." dialog is poped-up by
 the browser eventualy.
 5. Client interacts with the server C now for a while.
 6. Browser is killed (normal exit, shutdown will do too) when there is
 no activity.
 7. Browser is restarted and the user attempts to go to the root URL of
 the app.
 Now things go NUTS. The proxy server goes crazy, spitting out tons of
 messages and exceptions, including
 division by zero attempted .
 In addition to the proxy server spitting out all of that info, during
 several attempts to duplicate this I also
 had the clustered server C go nuts in parallel with the proxy as
 well.
 These is unrecoverable situation, it is necessary to kill both the
 proxy and the clustered server in order to stop the
 madness.
 I realize there was some fix to infinite loop problem in
 HttpClusterServlet in SP6 but I am using SP6 and it doesn't help.
 Here is a compilation of both the messages from the weblogic.log and
 stdout:
 Notice that up until 14:53:45 the Broken Pipe messages were - info
 but
 at 14:54:14 they all become <E> - Errors
 How is this for a bug????
 -Andrew
 weblogic.log:
 Wed Nov 08 14:52:05 EST 2000: <ServletContext-General> cluster: init
 Wed Nov 08 14:52:10 EST 2000: <proxy> IOException in proxy Broken
 pipe
 Wed Nov 08 14:52:48 EST 2000: <proxy> IOException in proxy Broken
 pipe
 Wed Nov 08 14:53:01 EST 2000: <proxy> IOException in proxy Broken
 pipe
 Wed Nov 08 14:53:02 EST 2000: <proxy> IOException in proxy Connection
 reset by peer: Connection reset by peer
 Wed Nov 08 14:53:02 EST 2000: <proxy> IOException in proxy Connection
 reset by peer: Connection reset by peer
 Wed Nov 08 14:53:45 EST 2000: <proxy> IOException in proxy Broken
 pipe
 Wed Nov 08 14:53:45 EST 2000: <proxy> IOException in proxy Broken
 pipe
 Wed Nov 08 14:53:45 EST 2000: <proxy> IOException in proxy Broken
 pipe
 Wed Nov 08 14:54:14 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:54:44 EST 2000: <proxy> IOException in proxy Connection
 reset by peer: Connection reset by peer
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:25 EST 2000:<E> <ServletContext-General> Servlet failed
 with Exception
 java.lang.ArithmeticException: / by zero
 at
 weblogic.servlet.internal.HttpClusterServlet$ServerList.next(Compiled
 Code)
 at weblogic.servlet.internal.HttpClusterServlet$2.next(Compiled Code)
 at weblogic.servlet.internal.HttpClusterServlet.service(Compiled Code)
 at javax.servlet.http.HttpServlet.service(Compiled Code)
 at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
 Code)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
 at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 at weblogic.kernel.ExecuteThread.run(Compiled Code)
 Wed Nov 08 14:55:25 EST 2000:<E> <ServletContext-General> Servlet failed
 with Exception
 java.lang.ArithmeticException: / by zero
 at
 weblogic.servlet.internal.HttpClusterServlet$ServerList.next(Compiled
 Code)
 at weblogic.servlet.internal.HttpClusterServlet$2.next(Compiled Code)
 at weblogic.servlet.internal.HttpClusterServlet.service(Compiled Code)
 at javax.servlet.http.HttpServlet.service(Compiled Code)
 at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
 Code)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
 at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 at weblogic.kernel.ExecuteThread.run(Compiled Code)
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Broken pipe
 and here is stdout...............
 java.io.IOException: Broken pipe
 at java.net.SocketOutputStream.socketWrite(Native Method)
 at java.net.SocketOutputStream.socketWrite(Compiled Code)
 at java.net.SocketOutputStream.write(Compiled Code)
 at weblogic.servlet.internal.ChunkUtils.writeChunks(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletOutputStreamImpl.flush(Compiled Code)
 at
 weblogic.servlet.internal.ServletOutputStreamImpl.flush(Compiled Code)
 at
 weblogic.servlet.internal.ServletOutputStreamImpl.writeStream(Compiled
 Code)
 at
 weblogic.servlet.internal.HttpClusterServlet$Server.proxy(Compiled Code)
 at weblogic.servlet.internal.HttpClusterServlet.service(Compiled
 Code)
 at javax.servlet.http.HttpServlet.service(Compiled Code)
 at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
 at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 at weblogic.kernel.ExecuteThread.run(Compiled Code)
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 java.net.ConnectException: Connection refused
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.PlainSocketImpl.socketConnect(Compiled Code)
 at java.net.PlainSocketImpl.doConnect(Compiled Code)
 at java.net.PlainSocketImpl.connectToAddress(Compiled Code)
 at java.net.PlainSocketImpl.connect(Compiled Code)
 at java.net.Socket.<init>(Compiled Code)
 at java.net.Socket.<init>(Compiled Code)
 at
 weblogic.servlet.internal.HttpClusterServlet$3.newInstance(Compiled
 Code)
 at weblogic.utils.reuse.Pool.getInstance(Compiled Code)
 at
 weblogic.servlet.internal.HttpClusterServlet$Server.getConnection(Compiled
 Code)
 at
 weblogic.servlet.internal.HttpClusterServlet$Server.proxy(Compiled Code)
 at weblogic.servlet.internal.HttpClusterServlet.service(Compiled
 Code)
 at javax.servlet.http.HttpServlet.service(Compiled Code)
 at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
 at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 at weblogic.kernel.ExecuteThread.run(Compiled Code)
 Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 server.proxy()....Connection refused
 java.net.ConnectException: Connection refused
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.PlainSocketImpl.socketConnect(Compiled Code)
 at java.net.PlainSocketImpl.doConnect(Compiled Code)
 at java.net.PlainSocketImpl.connectToAddress(Compiled Code)
 at java.net.PlainSocketImpl.connect(Compiled Code)
 at java.net.Socket.<init>(Compiled Code)
 at java.net.Socket.<init>(Compiled Code)
 at
 weblogic.servlet.internal.HttpClusterServlet$3.newInstance(Compiled
 Code)
 at weblogic.utils.reuse.Pool.getInstance(Compiled Code)
 at
 weblogic.servlet.internal.HttpClusterServlet$Server.getConnection(Compiled
 Code)
 at
 weblogic.servlet.internal.HttpClusterServlet$Server.proxy(Compiled Code)
 at weblogic.servlet.internal.HttpClusterServlet.service(Compiled
 Code)
 at javax.servlet.http.HttpServlet.service(Compiled Code)
 at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
 at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 Code)
 at
 weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled
 Code)
 at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 at weblogic.kernel.ExecuteThread.run(Compiled Code)
 and a whole lot more of the same sequence of errors - too much too list


Contact support and see if they have a patch for this.
 - Prasad
 Andrzej Porebski wrote:
 > Hi all,
 >
 > I have come across yet one more cluster problem.
 > Here is as precise description as I can come up with; we are running
 > WebLogic 5.1 SP6 on Solaris.
 >
 > Architecture
 >
 > Weblogic server (A) running as proxy to a cluster (configured with
 > HttpClusterServlet) and
 > 2 Weblogic servers (B & C) running in cluster, the app is protected -
 > sign-on required.
 >
 > Scenario:
 >
 > All 3 server are up and running.
 >
 > 1) A client connects via proxy to server B, is authenticated and logged
 > in. Session is established.
 > 2) Client interacts with server B, session gets populated with some
 > basic objects.
 > 3) Server B is killed.
 > 4) Client attempts to send a request to server B. Problem #1 - Even
 > though this request from browser gets
 > to the proxy and the browser's status says "receiving data from
 > ...", nothing gets propagated to server C.
 > Now the user clicks Stop button on the browser and sees "Transfer
 > interrupted..." page generated by the browser.
 > Client hits back button, the previous page gets loaded fine. Now the
 > client attempts to send the same request
 > again and this time it gets through the proxy to the server C which
 > has a replicated session. Things are fine but
 > this initial failure troublesme as it happens ALL the time when
 > scenario is repeated. If the user does not hit the
 > stop button, "document conainted no data...." dialog is poped-up by
 > the browser eventualy.
 > 5. Client interacts with the server C now for a while.
 > 6. Browser is killed (normal exit, shutdown will do too) when there is
 > no activity.
 > 7. Browser is restarted and the user attempts to go to the root URL of
 > the app.
 > Now things go NUTS. The proxy server goes crazy, spitting out tons of
 > messages and exceptions, including
 > division by zero attempted .
 > In addition to the proxy server spitting out all of that info, during
 > several attempts to duplicate this I also
 > had the clustered server C go nuts in parallel with the proxy as
 > well.
 > These is unrecoverable situation, it is necessary to kill both the
 > proxy and the clustered server in order to stop the
 > madness.
 > I realize there was some fix to infinite loop problem in
 > HttpClusterServlet in SP6 but I am using SP6 and it doesn't help.
 >
 > Here is a compilation of both the messages from the weblogic.log and
 > stdout:
 > Notice that up until 14:53:45 the Broken Pipe messages were - info
 > but
 > at 14:54:14 they all become <E> - Errors
 >
 > How is this for a bug????
 >
 > -Andrew
 >
 > weblogic.log:
 > Wed Nov 08 14:52:05 EST 2000: <ServletContext-General> cluster: init
 > Wed Nov 08 14:52:10 EST 2000: <proxy> IOException in proxy Broken
 > pipe
 > Wed Nov 08 14:52:48 EST 2000: <proxy> IOException in proxy Broken
 > pipe
 > Wed Nov 08 14:53:01 EST 2000: <proxy> IOException in proxy Broken
 > pipe
 > Wed Nov 08 14:53:02 EST 2000: <proxy> IOException in proxy Connection
 > reset by peer: Connection reset by peer
 > Wed Nov 08 14:53:02 EST 2000: <proxy> IOException in proxy Connection
 > reset by peer: Connection reset by peer
 > Wed Nov 08 14:53:45 EST 2000: <proxy> IOException in proxy Broken
 > pipe
 > Wed Nov 08 14:53:45 EST 2000: <proxy> IOException in proxy Broken
 > pipe
 > Wed Nov 08 14:53:45 EST 2000: <proxy> IOException in proxy Broken
 > pipe
 > Wed Nov 08 14:54:14 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:54:44 EST 2000: <proxy> IOException in proxy Connection
 > reset by peer: Connection reset by peer
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:25 EST 2000:<E> <ServletContext-General> Servlet failed
 > with Exception
 > java.lang.ArithmeticException: / by zero
 > at
 > weblogic.servlet.internal.HttpClusterServlet$ServerList.next(Compiled
 > Code)
 > at weblogic.servlet.internal.HttpClusterServlet$2.next(Compiled Code)
 > at weblogic.servlet.internal.HttpClusterServlet.service(Compiled Code)
 > at javax.servlet.http.HttpServlet.service(Compiled Code)
 > at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
 > Code)
 > at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
 > at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 > at weblogic.kernel.ExecuteThread.run(Compiled Code)
 >
 > Wed Nov 08 14:55:25 EST 2000:<E> <ServletContext-General> Servlet failed
 > with Exception
 > java.lang.ArithmeticException: / by zero
 > at
 > weblogic.servlet.internal.HttpClusterServlet$ServerList.next(Compiled
 > Code)
 > at weblogic.servlet.internal.HttpClusterServlet$2.next(Compiled Code)
 > at weblogic.servlet.internal.HttpClusterServlet.service(Compiled Code)
 > at javax.servlet.http.HttpServlet.service(Compiled Code)
 > at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
 > Code)
 > at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
 > at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 > at weblogic.kernel.ExecuteThread.run(Compiled Code)
 >
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:26 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 > Wed Nov 08 14:55:27 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Broken pipe
 >
 > and here is stdout...............
 >
 > java.io.IOException: Broken pipe
 > at java.net.SocketOutputStream.socketWrite(Native Method)
 > at java.net.SocketOutputStream.socketWrite(Compiled Code)
 > at java.net.SocketOutputStream.write(Compiled Code)
 > at weblogic.servlet.internal.ChunkUtils.writeChunks(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletOutputStreamImpl.flush(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletOutputStreamImpl.flush(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletOutputStreamImpl.writeStream(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.HttpClusterServlet$Server.proxy(Compiled Code)
 >
 > at weblogic.servlet.internal.HttpClusterServlet.service(Compiled
 > Code)
 > at javax.servlet.http.HttpServlet.service(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 > at weblogic.kernel.ExecuteThread.run(Compiled Code)
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > java.net.ConnectException: Connection refused
 > at java.net.PlainSocketImpl.socketConnect(Native Method)
 > at java.net.PlainSocketImpl.socketConnect(Compiled Code)
 > at java.net.PlainSocketImpl.doConnect(Compiled Code)
 > at java.net.PlainSocketImpl.connectToAddress(Compiled Code)
 > at java.net.PlainSocketImpl.connect(Compiled Code)
 > at java.net.Socket.<init>(Compiled Code)
 > at java.net.Socket.<init>(Compiled Code)
 > at
 > weblogic.servlet.internal.HttpClusterServlet$3.newInstance(Compiled
 > Code)
 > at weblogic.utils.reuse.Pool.getInstance(Compiled Code)
 > at
 > weblogic.servlet.internal.HttpClusterServlet$Server.getConnection(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.HttpClusterServlet$Server.proxy(Compiled Code)
 >
 > at weblogic.servlet.internal.HttpClusterServlet.service(Compiled
 > Code)
 > at javax.servlet.http.HttpServlet.service(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 > at weblogic.kernel.ExecuteThread.run(Compiled Code)
 > Wed Nov 08 14:55:25 EST 2000:<E> <proxy> IOException after
 > server.proxy()....Connection refused
 > java.net.ConnectException: Connection refused
 > at java.net.PlainSocketImpl.socketConnect(Native Method)
 > at java.net.PlainSocketImpl.socketConnect(Compiled Code)
 > at java.net.PlainSocketImpl.doConnect(Compiled Code)
 > at java.net.PlainSocketImpl.connectToAddress(Compiled Code)
 > at java.net.PlainSocketImpl.connect(Compiled Code)
 > at java.net.Socket.<init>(Compiled Code)
 > at java.net.Socket.<init>(Compiled Code)
 > at
 > weblogic.servlet.internal.HttpClusterServlet$3.newInstance(Compiled
 > Code)
 > at weblogic.utils.reuse.Pool.getInstance(Compiled Code)
 > at
 > weblogic.servlet.internal.HttpClusterServlet$Server.getConnection(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.HttpClusterServlet$Server.proxy(Compiled Code)
 >
 > at weblogic.servlet.internal.HttpClusterServlet.service(Compiled
 > Code)
 > at javax.servlet.http.HttpServlet.service(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
 > Code)
 > at
 > weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled
 > Code)
 > at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
 > at weblogic.kernel.ExecuteThread.run(Compiled Code)
 > .......
 > and a whole lot more of the same sequence of errors - too much too list
 > ..........

HttpClusterServlet - example

Good morning,
 I've followed the instructions on how to configure the HttpClusterServlet
 and to install the example (InMemRepClient.war). I was expecting to be able
 to access the test app via the proxy
 (http://localhost:80/InMemRepClient/Session.jsp), but this yields the
 message "no backend servers" and the proxy console shows:
 <Sat Jun 28 12:22:08 PDT 2003>: Found session from url: null
 <Sat Jun 28 12:22:08 PDT 2003>: #### Trying to connect with server
 server2!7201!443
 <Sat Jun 28 12:22:08 PDT 2003>: Failed to connect: server2!7201!443
 <Sat Jun 28 12:22:08 PDT 2003>: marked bad: server2!7201!443
 <Sat Jun 28 12:22:08 PDT 2003>: #### Trying to connect with server
 server1!7101!443
 <Sat Jun 28 12:22:08 PDT 2003>: Failed to connect: server1!7101!443
 <Sat Jun 28 12:22:08 PDT 2003>: marked bad: server1!7101!443
 <Sat Jun 28 12:22:09 PDT 2003>: === whole list is bad, reverting to the all
 servers list ===
 <Sat Jun 28 12:22:09 PDT 2003>: #### Trying to connect with server
 server2!7201!443
 <Sat Jun 28 12:22:09 PDT 2003>: Failed to connect: server2!7201!443
 <Sat Jun 28 12:22:09 PDT 2003>: marked bad: server2!7201!443
 <Sat Jun 28 12:22:09 PDT 2003>: Sleeping for 2 secs .....
 <Sat Jun 28 12:22:11 PDT 2003>: #### Trying to connect with server
 server1!7101!443
 <Sat Jun 28 12:22:11 PDT 2003>: Failed to connect: server1!7101!443
 <Sat Jun 28 12:22:11 PDT 2003>: marked bad: server1!7101!443
 <Sat Jun 28 12:22:11 PDT 2003>: Sleeping for 2 secs .....
 <Sat Jun 28 12:22:13 PDT 2003>: === whole list is bad, reverting to the all
 servers list ===
 <Sat Jun 28 12:22:13 PDT 2003>: #### Trying to connect with server
 server1!7101!443
 <Sat Jun 28 12:22:13 PDT 2003>: Failed to connect: server1!7101!443
 <Sat Jun 28 12:22:13 PDT 2003>: marked bad: server1!7101!443
 <Sat Jun 28 12:22:13 PDT 2003>: Sleeping for 2 secs .....
 <Sat Jun 28 12:22:15 PDT 2003>: #### Trying to connect with server
 server2!7201!443
 <Sat Jun 28 12:22:15 PDT 2003>: Failed to connect: server2!7201!443
 <Sat Jun 28 12:22:15 PDT 2003>: marked bad: server2!7201!443
 <Sat Jun 28 12:22:15 PDT 2003>: Sleeping for 2 secs .....
 <Sat Jun 28 12:22:17 PDT 2003>: === whole list is bad, reverting to the all
 servers list ===
 <Sat Jun 28 12:22:17 PDT 2003>: #### Trying to connect with server
 server2!7201!443
 <Sat Jun 28 12:22:17 PDT 2003>: Failed to connect: server2!7201!443
 <Sat Jun 28 12:22:17 PDT 2003>: marked bad: server2!7201!443
 <Sat Jun 28 12:22:17 PDT 2003>: Sleeping for 2 secs .....
 <Sat Jun 28 12:22:19 PDT 2003>: #### Trying to connect with server
 server1!7101!443
 <Sat Jun 28 12:22:19 PDT 2003>: Failed to connect: server1!7101!443
 <Sat Jun 28 12:22:19 PDT 2003>: marked bad: server1!7101!443
 <Sat Jun 28 12:22:19 PDT 2003>: Tried all servers but didn't succeed
 I tried accessing the app via one of the servers in the cluster directly
 (http://localhost:7101/InMemRepClient/Session.jsp) and the app appears and I
 can add name/value pairs. But when I kill the managed server, and continue
 trying to use the app I get "Page cannot be displayed".
 I have successfully run the test
 (http://localhost:80/foo.jsp?__WebLogicBridgeConfig) which shows the
 message:
 Query String: __WebLogicBridgeConfig
 General Server List:
 1.. server2:7201:443
 2.. server1:7101:443
 ConnectRetrySecs: 2
 ConnectTimeoutSecs: 10
 CookieName: JSESSIONID
 Debug: true
 DebugConfigInfo: true
 DefaultFileName: null
 DisableCookie2Server: false
 DynamicServerList: true
 FileCaching: true
 HungServerRecoverSecs: 300
 Idempotent: true
 KeepAliveEnabled: true
 KeepAliveSecs: 30
 MaxPostSize: -1
 MaxSkipTime: 10
 PathPrepend: null
 PathTrim: null
 TrimExt: null
 SecureProxy: false
 WLLogFile: c:/temp/wlproxy.log
 WLProxySSL: false
 Any ideas what I'm doing wrong is much appreciated. One point I'm puzzled
 about in the above is what the :443 refers to?
 Cheers,
 SB


Hi Stanley,
 Try with your IP address of your proxy rather than using localhost and
 443 refers to the SSL port.
 rgds
 Srini
 "Stanley Beamish" <[email protected]> wrote in message news:<[email protected]>...
 > Good morning,
 >
 > I've followed the instructions on how to configure the HttpClusterServlet
 > and to install the example (InMemRepClient.war). I was expecting to be able
 > to access the test app via the proxy
 > (http://localhost:80/InMemRepClient/Session.jsp), but this yields the
 > message "no backend servers" and the proxy console shows:
 >
 > <Sat Jun 28 12:22:08 PDT 2003>: Found session from url: null
 > <Sat Jun 28 12:22:08 PDT 2003>: #### Trying to connect with server
 > server2!7201!443
 > <Sat Jun 28 12:22:08 PDT 2003>: Failed to connect: server2!7201!443
 > <Sat Jun 28 12:22:08 PDT 2003>: marked bad: server2!7201!443
 > <Sat Jun 28 12:22:08 PDT 2003>: #### Trying to connect with server
 > server1!7101!443
 > <Sat Jun 28 12:22:08 PDT 2003>: Failed to connect: server1!7101!443
 > <Sat Jun 28 12:22:08 PDT 2003>: marked bad: server1!7101!443
 > <Sat Jun 28 12:22:09 PDT 2003>: === whole list is bad, reverting to the all
 > servers list ===
 > <Sat Jun 28 12:22:09 PDT 2003>: #### Trying to connect with server
 > server2!7201!443
 > <Sat Jun 28 12:22:09 PDT 2003>: Failed to connect: server2!7201!443
 > <Sat Jun 28 12:22:09 PDT 2003>: marked bad: server2!7201!443
 > <Sat Jun 28 12:22:09 PDT 2003>: Sleeping for 2 secs .....
 > <Sat Jun 28 12:22:11 PDT 2003>: #### Trying to connect with server
 > server1!7101!443
 > <Sat Jun 28 12:22:11 PDT 2003>: Failed to connect: server1!7101!443
 > <Sat Jun 28 12:22:11 PDT 2003>: marked bad: server1!7101!443
 > <Sat Jun 28 12:22:11 PDT 2003>: Sleeping for 2 secs .....
 > <Sat Jun 28 12:22:13 PDT 2003>: === whole list is bad, reverting to the all
 > servers list ===
 > <Sat Jun 28 12:22:13 PDT 2003>: #### Trying to connect with server
 > server1!7101!443
 > <Sat Jun 28 12:22:13 PDT 2003>: Failed to connect: server1!7101!443
 > <Sat Jun 28 12:22:13 PDT 2003>: marked bad: server1!7101!443
 > <Sat Jun 28 12:22:13 PDT 2003>: Sleeping for 2 secs .....
 > <Sat Jun 28 12:22:15 PDT 2003>: #### Trying to connect with server
 > server2!7201!443
 > <Sat Jun 28 12:22:15 PDT 2003>: Failed to connect: server2!7201!443
 > <Sat Jun 28 12:22:15 PDT 2003>: marked bad: server2!7201!443
 > <Sat Jun 28 12:22:15 PDT 2003>: Sleeping for 2 secs .....
 > <Sat Jun 28 12:22:17 PDT 2003>: === whole list is bad, reverting to the all
 > servers list ===
 > <Sat Jun 28 12:22:17 PDT 2003>: #### Trying to connect with server
 > server2!7201!443
 > <Sat Jun 28 12:22:17 PDT 2003>: Failed to connect: server2!7201!443
 > <Sat Jun 28 12:22:17 PDT 2003>: marked bad: server2!7201!443
 > <Sat Jun 28 12:22:17 PDT 2003>: Sleeping for 2 secs .....
 > <Sat Jun 28 12:22:19 PDT 2003>: #### Trying to connect with server
 > server1!7101!443
 > <Sat Jun 28 12:22:19 PDT 2003>: Failed to connect: server1!7101!443
 > <Sat Jun 28 12:22:19 PDT 2003>: marked bad: server1!7101!443
 > <Sat Jun 28 12:22:19 PDT 2003>: Tried all servers but didn't succeed
 >
 > I tried accessing the app via one of the servers in the cluster directly
 > (http://localhost:7101/InMemRepClient/Session.jsp) and the app appears and I
 > can add name/value pairs. But when I kill the managed server, and continue
 > trying to use the app I get "Page cannot be displayed".
 >
 > I have successfully run the test
 > (http://localhost:80/foo.jsp?__WebLogicBridgeConfig) which shows the
 > message:
 >
 > Query String: __WebLogicBridgeConfig
 >
 > General Server List:
 > 1.. server2:7201:443
 > 2.. server1:7101:443
 >
 > ConnectRetrySecs: 2
 > ConnectTimeoutSecs: 10
 > CookieName: JSESSIONID
 > Debug: true
 > DebugConfigInfo: true
 > DefaultFileName: null
 > DisableCookie2Server: false
 > DynamicServerList: true
 > FileCaching: true
 > HungServerRecoverSecs: 300
 > Idempotent: true
 > KeepAliveEnabled: true
 > KeepAliveSecs: 30
 > MaxPostSize: -1
 > MaxSkipTime: 10
 > PathPrepend: null
 > PathTrim: null
 > TrimExt: null
 > SecureProxy: false
 > WLLogFile: c:/temp/wlproxy.log
 > WLProxySSL: false
 > _____________________________________________________
 >
 > Any ideas what I'm doing wrong is much appreciated. One point I'm puzzled
 > about in the above is what the :443 refers to?
 >
 > Cheers,
 >
 > SB

Tricking HttpClusterServlet to weight-balance?

To Whom It May Concern:
          With the WebLogicCluster Web Server Plug-In parameter, I know I have to supply a list of available, clustered servers to run HttpClusterServlet.
          If I duplicate the servers in the list (i.e., server1|server2|server1), will the HttpClusterServlet recognize that and do round-robin on all unique servers in the list, or will it just read the list, one server at a time and be tricked into doing weight-based load balancing?
          Sincerely,
          Anthony

I believe overlaying 2 charts is what I would want to do here.
Every plane has a center of gravity which moves based on how much weight is in certain areas. I have been able to plot the line for the envelope (which looks like the image I posted earlier) based on 5 pairs of coordinates on a scatter graph, and connecting them with a line. These numbers will always stay the same for a particular aircraft (but I want to do this for 6 or 7 aircraft) and it only changes if the something physically changes on the airplane (like new instruments). I wanted to be able to change these numbers easily if something does change down the road
Now, based on the user input values for how much weight is at a specific area (front seat, rear baggage area, etc) I can calculate the CG by getting the total weight and the total moment and plotting the intersect of those two points on the Moment envelope chart.
So yes, I suppose I'm looking to overlay the intersect of these two values on the chart I already created that outlines the moment envelope.
If you look at the example I posted earlier, plot a total weight of 2,367 and a moment of 105.2, follow the red lines to the intersect and since that point is within the Moment envelope, the plane is good to fly.
Hope that helps explain.

Training and Event Management - report on list of cancelled courses

Hi All,
Is there any standard report available to get the list of cancelled courses (be it business event grp , type or business event) Would appreciate your inputs on this.
Kind regards
Sathya

S_AHR_61016216 - Cancellations per Attendee , i think there is no standard report for cencelation of business events, type and group.
for cancellations per attendee reports is available in the system.
good luck
Devi

Printing list view in ical

I use mail and ical for everything now. Everything is fine except When I want to print the "list view" which shows my “to dos”. It displays the URL the “do to” is attached to in mail. I use notes often in mail and enter to dos in the notes so they will have URL links. The link only becomes a nuisance when I want to print, otherwise it’s very useful.
Why would the long URL paths display when in print view???!!!!! It doesn’t make any sense.
Is there anything I can do?
Thank you

ecernek,
There is no event list option on iCal like the one on the iPhone.
That number means that you have an event invitation. Use iCal>View>Show Notifications to choose what to do with the notification.

Weekly "List View" in iCal

Hello - my family has recently converted to Mac, and my wife and I have been long-time Outlook users in our workplaces...
Trying to help my wife get her calendar data to iCal - one of the few things that we miss from Outlook is the "Week" view, which shows like Outlook's (7-Day view), which has a large grid of the 7 days in the current week, and all events displayed in a text-based "list" format, and clearly displaying numerical start and end times, rather than the graphical "block" method of iCal's default Week view.
The Month view on iCal comes close, but it is rather cramped when you want a closer-in look, and also omits end time.
Any suggestions?
Thanks!

ecernek,
There is no event list option on iCal like the one on the iPhone.
That number means that you have an event invitation. Use iCal>View>Show Notifications to choose what to do with the notification.

Event List view in iCal?

I would love to have an Event List view in iCal like I do on the calendar on my iPhone. Is there such a thing? The particular reason for wanting it (this time) is that one of the calendars in the ON MY MAC list has a number in a oval to the right.
I believe this is trying to tell me that there is a new event that I need to do something about. Problem is, I don't know where to find it.

ecernek,
There is no event list option on iCal like the one on the iPhone.
That number means that you have an event invitation. Use iCal>View>Show Notifications to choose what to do with the notification.

List view in iCal on my iPod touch is corrupted

The 'list view' seems to be all wonky in Calendar on my iPod touch.
The dates for a given day that's displayed don't make sense:
i.e. Sunday Oct. 27 2030 followed by Saturday July 14 2001 followed by Tuesday Jan. 16 2001 are listed in consecutive order instead of today, tomorrow and next day (with correct dates).
Also, the 'events' given for each day listed don't make sense and are often duplicated.
The 'day' and 'month' views however, seem to be ok and not corrupted. The 'list' field in the month view also seems fine ?
Has anybody experienced this ? Very frustrating, since I like the list view.
I make most of my entries/changes to iCal on our main desktop (iMac 24") then sync. to my iPod. The list view seems ok on the desktop.
Any help greatly appreciated.
ps. not sure if the problem corresponded with an upgrade of the Ipod software to OS 3.1 from 2.x....

See this previous discussion:
FIX for iPod Touch Home Button: Apple Support Communities

Error while activating a routine "no object list"

hi
I am getting a error while activating a routine Rv50c601
"There is no object list for INCLUDEs" Please suggest on the error and resoulution
regards
Nishant

Try running program RV80HGEN.
Regards,
Naiimesh Patel

Código de item da lista de serviço - Salvador

Boa tarde amigos,
Estamos no meio de um projeto de implementação de NFSe, e por incrivel que pareça estamos obtendo êxito, porém no meio desse caminho, há uma série de mapeamentos de campos referente aos respectiavos municipios dos quais, estão nos dando um pouco de dor de cabeça.
Para que fiquei mais claro a minha duvida, neste momento estamos mapeando Salvador, e no nosso cliente existe uma tabela contendo sua lista de serviço. Essa tabela deve ser linkada com as das prefeituras que são emitidas as notas, neste caso Salvador. O campo que nos pede essa informação é o tsItemListaServico C Código de item da lista de serviço 5 do manual de integração.
Gostaria de saber de vocês se alguém possui/jáviu ou sabe, se esta lista é especifica para Salvador ou é como a Nacional, aparentemente esta aqui - http://www.usp.br/gefim/manuais/CodigosISS.htm
Bom estamos mapeando agora Salvador mas depois partiremos para Recife, RJ, BH e Curitiba, estou deixando aqui citado, porque caso haja mais dessas listas.
Enfim acredito que seja somente isso, agradeço a atenção de vocês desde já!
Vitor Grassato

Fernando mais uma vez obrigado pela dica.
Venho aqui informar que cadastrei no SAP os códigos que foram definidos junto ao fiscal da empresa quais melhor se encaixavam com as descritas nos manuais das prefeituras.
No proprio site de cada prefeitura em seu campo Legislação há uma lista diferente para ser atribuida junto aos tipos de serviço de cada empresa.
A que mais me chamou atenção foi RJ, que possui cerca de 6 digitos para o campo do manual da ABRASF que é de 5 digitos, lçogo é necessario fazer uma alteração no XML caso vc queira implementar no municipio de RJ.
Do mais o Fernando ja exemplificou!
Agradeço a todos a colaboração e boa semana!

List of system fields like sy-index, sy-srow......

can any one give me list of system fields with there use. i would b very thankful.

hi Amjad,
Please find below the request fields, from table SYST.
INDEX     Loops, number of current pass
PAGNO     List creation, current page
TABIX     Internal table, current line index
TFILL     Internal tables, current number of lines
TOCCU     Internal tables, initial main memory requirements
DBCNT     DB operations, number of table lines processed
FDPOS     Character strings, offset in character string
COLNO     List creation, current column of list
LINCT     List processing, page length of list
LINNO     List creation, current line
LINSZ     List creation, width of list
MACOL     Print list, columns from SET MARGIN statement
MAROW     List printing, lines from SET MARGIN statement
TLENG     Internal tables, line width
LILLI     List processing, current list line
SUBRC     Return value, return value after ABAP statements
CUCOL     Screens, horizontal cursor position at PAI
CUROW     Screens, vertical cursor position at PAI
LSIND     List processing, details list index
LISTI     List processing, index of current list
STEPL     Screens, current table line index
SROWS     Screens, numbers of lines
SCOLS     Screens, number of columns
LOOPC     Screens, number of lines visible in table
TZONE     Date and time, time difference from Greenwich Mean Time
DAYST     Date and time, Daylight savings time flag
FDAYW     Date and time, factory calendar weekday
LANGU     R/3 System, current language
MODNO     R/3 System, external modes index
BATCH     Program running in background
BINPT     Batch input, program running under batch input
CALLD     ABAP program, ABAP program call mode
DYNNR     ABAP program, number of current screen
DYNGR     ABAP program, screen group of current screen
WTITL     List creation, flag for standard page header
CPAGE     List processing, current page number
DBNAM     ABAP program, related logical database
MANDT     R/3 System, client number from logon
PEXPI     Print parameters, spool retention period
PRIMM     Print parameters, print immediately
PRREL     Print parameters, delete after printing
PRBIG     Print parameters, selection cover page
PRNEW     Print parameters, new spool request
PDEST     Print parameters, output device
PLIST     Print parameters, name of spool request
PRDSN     Print parameters, name of spool dataset
CALLR     Print list, ID for print dialog function
RTITL     Print parameters, title of print program
PRREC     Print parameters, recipient
PRTXT     Print parameters, text for cover page
PRABT     Print parameters, department on cover page
PAART     Print parameters, print formatting
PRCOP     Print parameters, number of copies
DBSYS     R/3 System, name of central database system
SYSID     R/3 System, name of R/3 System
OPSYS     R/3 System, operating system of application server
PFKEY     Screens, current GUI status
SAPRL     R/3 System, system release
TCODE     ABAP program, current transaction code
UCOMM     Screens, function code triggered by PAI
SPONO     Print list, spool number
DATUM     Date and time, current (application server) date
SLSET     Selection screens, name of variant
UZEIT     Dat and time, current application server time
REPID     ABAP program, current main program
UNAME     R/3 System, user logon name
LSTAT     List processing, list level IDs
ABCDE     Constant: Alphabet (A,B,C,...)
MSGLI     Messages, message line
TITLE     Screens, title text
LISEL     List processing, contents of selected line
ULINE     Constants, horizontal line with length 255
CPROG     ABAP program, caller in external procedures
LDBPG     ABAP program, logical database program
TVAR0     List creation, text variable for headers
TVAR1     List creation, text variable for headers
TVAR2     List creation, text variable for headers
TVAR3     List creation, text variable for headers
TVAR4     List creation, text variable for headers
TVAR5     List creation, text variable for headers
TVAR6     List creation, text variable for headers
TVAR7     List creation, text variable for headers
TVAR8     List creation, text variable for headers
TVAR9     List creation, text variable for headers
MSGID     Messages, message class
MSGTY     Messages, message type
MSGNO     Messages, message number
MSGV1     Messages, message variables
MSGV2     Messages, message variables
MSGV3     Messages, message variables
MSGV4     Messages, message variables
VLINE     Constants, vertical bar
STACO     List processing, initial column displayed
STARO     List processing, first line displayed at top
DATAR     Screens, display user entry
HOST     R/3 System, Name of application server
DATLO     Date and time, local date of user
TIMLO     Date and time, local time for user
ZONLO     Date and time, time zone of user
Hope this helps,
Sajan Joseph.

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