Benefits of implementation cluster WebLogic + disadvantages

Similar Questions

• cluster WebLogic - architectural issues

  Friends,
  
  As a newbie to weblogic, I have a few questions about weblogic (11g).
  
  (1) is the cluster weblogic a product undergoing a maturation? Is it common in environments of PROD these days?
  (2) who is more common - handset third architecture or architecture at multi levels?
  (3) other HA and scalability - is there a reason we'd go for a weblogic cluster?
  (4) how would ease of administration - abt someone prefer to have cluster WL in DEV environment?
  
  I'm basically a DBA and now being analyzed the benefits and disadvantages to go in a cluster WL
  for our configuration of prod. Although our business requires HA, we are more concerned about reliability
  and ease of administration of cluster WLS. Your suggestions and advice would be a great help.
  
  Kind regards
  ~ jp ~

  (1) is the cluster weblogic a product undergoing a maturation? Is it common in environments of PROD these days?
  Rep. : before even buying Oracle BEA weblogic server was famous among J2EE projects. It is stable, reliable and efficient application server. I saw WLS in PROD topologies in several places.

  (2) who is more common - handset third architecture or architecture at multi levels?
  Rep. : there are several possible topologies in deployment of multi levels. I will suggest you proven and easy to implement enterprise deployment guide

  (3) other HA and scalability - is there a reason we'd go for a weblogic cluster?
  Rep. : indirectly, you want to know what is cluster & why cluster is used? To give a short answer, for better through - put, effective use of resources etc. you better read about benefits of the cluster documentation.

  (4) how would ease of administration - abt someone prefer to have cluster WL in DEV environment?
  WebLogic provides the web user interface for managing all components. He provided WLST API, using which you can write scripts in server admin. There the dashboard to live health monitoring of servers. Yes, in fact 98% of the place of the customer, I've seen DEV env is clustered environment.

  Hope I could answer your questions

• Cluster WebLogic 12 c and timers EJB 3.1

  Hello!

  I am using Weblogic 12 c (12.1.2.0) Cluster.

  I configured datasource of the cluster tab of planning and created the tables ACTIVE and WEBLOGIC_TIMERS.

  
  

  @Stateless

  public class MyTimerService {}

  @Schedule (minute = "* / 2", time = "*")

  private void heartbeat() {}

  System.out.println ("heartbeat shot");

  }

  <? XML version = "1.0" encoding = "UTF-8"? >

  < wls:weblogic - ejb - jar

  ' xmlns:wls = ' http://xmlns.Oracle.com/WebLogic/WebLogic-EJB-jar "" "

  " xmlns: xsi =" http://www.w3.org/2001/XMLSchema-instance "

  " xsi: schemaLocation =" http://Java.Sun.com/XML/NS/JavaEE http://java.sun.com/xml/ns/javaee/ejb-jar_3_1.xsd http://xmlns.oracle.com/weblogic/weblogic-ejb-jar http://xmlns.oracle.com/weblogic/weblogic-ejb-jar/1.3/weblogic-ejb-jar.xsd' > .

  < wls:timer - implemented > Clustered < / wls:timer - implemented >

  < / wls:weblogic - ejb - jar >

  If I run the application on weblogic stanalone without timer of weblogic-ejb - jar.Xml.

  When I try to run the cluster with weblogic-ejb - jar.xml during deployment I have error:

  < error > < hats > < localhost > < MS1 > < ExecuteThread [ASSET]: '0' for the queue: '(self-adjusting) weblogic.kernel.Default' > < < WLS Kernel > > <><>< 1404812226750 > < BEA-149231 > < cannot create the activation state to true for the application 'test '.

  weblogic.application.ModuleException: java.lang.NullPointerException

  at weblogic.application.internal.ExtensibleModuleWrapper.activate(ExtensibleModuleWrapper.java:123)

  at weblogic.application.internal.flow.ModuleListenerInvoker.activate(ModuleListenerInvoker.java:114)

  to weblogic.application.internal.flow.ModuleStateDriver$ 2.next(ModuleStateDriver.java:192)

  to weblogic.application.internal.flow.ModuleStateDriver$ 2.next(ModuleStateDriver.java:187)

  at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:42)

  at weblogic.application.internal.flow.ModuleStateDriver.activate(ModuleStateDriver.java:58)

  at weblogic.application.internal.flow.DeploymentCallbackFlow.activate(DeploymentCallbackFlow.java:145)

  to weblogic.application.internal.BaseDeployment$ 2.next(BaseDeployment.java:729)

  at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:42)

  at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:258)

  at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:61)

  at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:165)

  at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:80)

  at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:222)

  at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:414)

  to weblogic.management.deploy.internal.DeploymentAdapter$ 1.doActivate(DeploymentAdapter.java:51)

  at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:200)

  to weblogic.management.deploy.internal.AppTransition$ 2.transitionApp(AppTransition.java:30)

  at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:240)

  at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)

  at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)

  at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:191)

  at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:99)

  at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)

  at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295)

  at weblogic.work.ExecuteThread.run(ExecuteThread.java:254)

  Caused by: java.lang.NullPointerException

  at weblogic.ejb.container.timer.ClusteredEJBTimerManager.uninitializeTimerHandler(ClusteredEJBTimerManager.java:220)

  at weblogic.ejb.container.timer.ClusteredEJBTimerManager.undeploy(ClusteredEJBTimerManager.java:185)

  at weblogic.ejb.container.manager.BaseEJBManager.undeployTimerManager(BaseEJBManager.java:438)

  at weblogic.ejb.container.manager.BaseEJBManager.undeploy(BaseEJBManager.java:420)

  at weblogic.ejb.container.manager.StatelessManager.undeploy(StatelessManager.java:397)

  at weblogic.ejb.container.deployer.EJBDeployer.deactivate(EJBDeployer.java:1327)

  at weblogic.ejb.container.deployer.EjbModuleExtension.preDeactivate(EjbModuleExtension.java:150)

  at weblogic.ejb.container.deployer.EjbModuleExtension.postActivate(EjbModuleExtension.java:140)

  to weblogic.application.internal.ExtensibleModuleWrapper$ ActivateStateChange.next (ExtensibleModuleWrapper.java:321)

  to weblogic.application.internal.ExtensibleModuleWrapper$ ActivateStateChange.next (ExtensibleModuleWrapper.java:313)

  at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:42)

  at weblogic.application.internal.ExtensibleModuleWrapper.activate(ExtensibleModuleWrapper.java:121)

  at weblogic.application.internal.flow.ModuleListenerInvoker.activate(ModuleListenerInvoker.java:114)

  to weblogic.application.internal.flow.ModuleStateDriver$ 2.next(ModuleStateDriver.java:192)

  to weblogic.application.internal.flow.ModuleStateDriver$ 2.next(ModuleStateDriver.java:187)

  at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:42)

  at weblogic.application.internal.flow.ModuleStateDriver.activate(ModuleStateDriver.java:58)

  at weblogic.application.internal.flow.DeploymentCallbackFlow.activate(DeploymentCallbackFlow.java:145)

  to weblogic.application.internal.BaseDeployment$ 2.next(BaseDeployment.java:729)

  at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:42)

  at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:258)

  at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:61)

  at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:165)

  at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:80)

  at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:222)

  at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:414)

  to weblogic.management.deploy.internal.DeploymentAdapter$ 1.doActivate(DeploymentAdapter.java:51)

  at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:200)

  to weblogic.management.deploy.internal.AppTransition$ 2.transitionApp(AppTransition.java:30)

  at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:240)

  at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)

  at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)

  at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:191)

  at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:99)

  at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)

  at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295)

  at weblogic.work.ExecuteThread.run(ExecuteThread.java:254)

  Could you please suggest what I doing worong.

  Above the problem I have when to deploy timer inside the large demand, I've created small test application comes with timer even and have another problem:

  < error > < EJB > < MS1 > < ExecuteThread [ASSET]: '0' for the queue: '(self-adjusting) weblogic.kernel.Default' > < < anonymous > > < BEA1 0003F3B65D8A > <>< 1404977347776 > < BEA-011090 > < the following error occurred when preparing call the method ejbTimeout (javax.ejb.Timer) of the TestTimerService(Application: clusteredTimer-0.0.1-SNAPSHOT, EJBComponent: clusteredTimer-0.0.1-SNAPSHOT.jar) EJB.

  java.lang.AssertionError: no strategy of transaction specified!

  at weblogic.ejb.container.internal.InvocationWrapper.enforceTransactionPolicy(InvocationWrapper.java:268)

  at weblogic.ejb.container.internal.BaseLocalObject.preInvoke(BaseLocalObject.java:88)

  at weblogic.ejb.container.internal.BaseLocalObject.__WL_preInvoke(BaseLocalObject.java:70)

  at weblogic.ejb.container.internal.TimerDrivenLocalObject.preInvoke(TimerDrivenLocalObject.java:35)

  to weblogic.ejb.container.timer.TimerHandlerImpl$ TimerObject.execute (TimerHandlerImpl.java:77)

  at weblogic.ejb.container.timer.TimerHandlerImpl.executeTimer(TimerHandlerImpl.java:53)

  at weblogic.ejb.container.timer.ClusteredTimerImpl.timerExpired(ClusteredTimerImpl.java:118)

  at weblogic.scheduler.ejb.internal.EJBListenerWrapper.executeTimer(EJBListenerWrapper.java:59)

  at weblogic.scheduler.ejb.internal.EJBListenerWrapper.timerExpired(EJBListenerWrapper.java:50)

  to weblogic.scheduler.TimerState$ $1 2.run(TimerState.java:200)

  at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)

  at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)

  to weblogic.scheduler.TimerState$ 1.run(TimerState.java:197)

  at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295)

  at weblogic.work.ExecuteThread.run(ExecuteThread.java:254)

  This problem seems to be caused by bugs:

  Bug 16730647 - ejb 3.1 timer can be deployed to a cluster weblogic 12 c - java.lang.nullpoint

  The patch is available for 12.1.2

  If please try to apply the patch and let us know your results

  Using OPatch 13.1 for Oracle Fusion Middleware 12 c (+ 12.1.2) (Doc ID 1587524.1)

  Best regards

  Luz

• Enabled for servers in Cluster WebLogic plug-in

  Hello

  I use Oracle iPlanet with WebLogic Plugins for my WebLogic servers backend. I saw this "Plug-in WebLogic enabled" option under the Advanced section in my managed servers and Cluster settings.

  I need to check this option for clusters and managed servers?

  • If the server instances to which Oracle HTTP Server proxy queries are in a cluster, select Clusters. and check "plug-in active WebLogic.
  • Otherwise, select servers. Individual server and then check "Plug-in active WebLogic" (when they are not part of the cluster / same cluster)

  If the servers where you want this 'active plug-in WebLogic"to be activated are already in a cluster then it is recommended to apply this last wide setting, so tomorrow, you can add a new server to your managed cluster, it should be fine.

  Concerning

  Jay SenSharma

• Different response time for each virtual server in the cluster, weblogic 11g

  
  Hello everyone
  
  currently I set up a server with the following characteristics.
  
  O.S. AIX 7
  RAM 32 G
  WebLogic 11 g
  Cluster 4 Server (4 GB each).
  
  My Web the application is deployed on the 4 using servers the management console on another physical server.
  
  J’ai responsible for tests on each server get different time as follows:
  
  Server 1: HostApp: 7090 -> 13 8 seconds
  Server 2: HostApp: 7090 -13 > 5 seconds
  Server 3: HostApp: 7090 -10 > 4 seconds
  Server 4: HostApp: 7090 -> 8 seconds
  
  distribution the load is material.
  
  Why This behavior?
  
  expected be around the same value or not?

  
  

  Thank you

  Please see my comments below:

  1. what made the request? It goes to the database? He calls a web service? Provide details

  2. how to access the application, you have a web server or a load balancer? Provide details.

  2 - is a web application? Is possible to test the application from a browser in the same area where the weblogic?

  I would try that because in this way we can isolate the problem to understand if this is a network problem or a matter of WebLogic Server.

  Best regards

  Luz

• Server cluster WebLogic in different machine

  Hello

  I user weblogic 10.3.6, I have 2 physical servers, I have to create managed with the cluster server, this cluster have a server managed to server1 and the 2nd to server2, the problem is server2 always give me status to leave and never go for a run.

  What I do:

  • I create 2 other machine weblogic-> environment-> Machine for the local computer and one for the remote computer
  • I check the time the Manager node for each machine and both give me status can be reached.
  • I attribute server1 to Server2 to computer2 and Computer1.

  Any suggestion to change the State of the server START to the RACE?

  Note: I have but the node Manager two plain because that is not SSL

  Looks like the server is not able to get the user name and password to start.

  Can you check if there is a boot.properties in the following location:

  For example:

  C:\Oracle\Middleware1036\user_projects\domains\base_domain\servers\\security

  If you do not have a boot.properties to the location above, create a file with the name 'boot.properties' with the following contents:

  username =

  password =

• Replica of cluster WebLogic Session covers do not

  Dear all,
  
  I-one areas with WLS 10.3.4 on two machines, each machine hosting a managed server, cluster of two servers, Manager of the nodes on the server and the management server on one of the servers. Using unicast and replication in memory with replicate if Group located in the weblogic.xml.
  
  Balancing between both Apache and selected options that allow proxy plugin in the field.
  
  It is I bring both servers,
  
  Connect the user to the test application.
  
  In the console, I can see cluster control that a user on Managed Server 1 and that the session is properly replicated on Managed Server 2.
  
  I don't then not Managed 1 Server that hosts the main session, the manual page refresh users request goes to the 2 managed server with the user to stay connected (as expected).
  
  However when I come back failed Managed Server 1 to the service I expected the current session now on Managed Server 2 to replicate to the Managed Server 1 (in case of failure of Managed Server 2, which now houses the main session).
  
  No matter how long wait this replication does not take place, BUT if after the 1 managed server is back online I manually refresh the Web Page, which connects to Managed Server 2, this starts the replication in action and creates a replica of the session on Managed Server 1.
  
  I don't think it's exected behavior and every idea what goes wrong?
  
  It is said in the oracle documentation
  
  "In a cluster of two servers, the customer would be transparent fail over to the server hosting the secondary session state." However, the client session state replication would not continue unless another WebLogic Server becomes available and joined the cluster. For example, if the original primary server has been restarted or reconnected to the network, it would be hosting the secondary session state. "
  
  but in this case the second bit does not seem to allow the secondary State unless the web page is in fact used again (when you see the State of replica created, it's almost as if it happen going forward but does not take into account the current state and to re - synchronizes between managed servers) leading to a user to disconnect if a failed server flip-flop test is performed.
  
  Thank you
  
  Published by: user10645195 on February 18, 2011 08:46
  
  Published by: user10645195 on February 18, 2011 08:52

  Hello

  Even if you choose the JDBC persistence... changes in the HttpSession data will be persisted/updated in the database only if you call "setAttribute" on HttpSession.

  Please visit the following link: http://download.oracle.com/docs/cd/E13222_01/wls/docs90/webapp/sessions.html#session-persistence

  WebLogic Server does not write the session state HTTP on disk if the request is read-only, which means that the application does not change the HTTP session. Only the wl_access_time column is updated in the database, if the session is accessible.
  For applications not unalterable, the container of the Web application updates the database for the session after each HTTP request state changes. This is done so that any server in the cluster can process applications on failovers and collect the last session of the database state.
  To prevent multiple database queries, hide recently used WebLogic Server of the sessions. Recently used sessions are not updated in the database for each request. The number of sessions in the cache is governed by the size of the cache setting in the element of session descriptor in the WebLogic weblogic.xml Server-specific deployment descriptor

  But yes, with the JDBC persistence you will get an advantage that "any server in the cluster can process applications on failovers and collect the last session of the database state." So there is no possibility of loss of Session. But compared to the in-memory Session replication JDBC persistence replication is little heavy weight because it requires a JDBC connectivity.

  .
  .
  Thank you
  Jay SenSharma
  http://middlewaremagic.com/ (Middleware Magic Is Here)

• Problem with implementation of Weblogic 10.3 after the change of username password

  I am facing problem with bringing Weblogic 10.3 after the change of username password in the field of safety Madhok, basically, I have deleted the user weblogic default and set m, y custome own user and provide credentials in the server start tab. When I try to bring up the administrator of the server it is, but managed servers fail from the administration console and I see security credentials for authentication error in newspapers? Why who would consider that the server administrator is able to provide the same credentials.
  
  Priya - malgouyres
  Systems architect
  InterAlliance Group Services
  http://www.interalliancegroup.com

  We had the similar problem in the past, our problem is:
  Problem:
  We have removed weblogic default security domain user and create a new user when Manager nodes and managed servers declined. When we try to put in place managed servers after the starting node Manager we continue get refused authentication errors.

  Solution:
  Recreate the user weblogic now try and implement servers managed from the command line using weblogic user. Once they are up to tap them down and bring them to the top again with the new user you created and it will work

  Reason:
  The 10.3-managed servers seems to store the local credentials he managed ldap or cache servers. When you start managed servers don't know the new information of identification and authentication performed against the old values of credentials stored, where they fail. Once they are started with the information identification old they communicate with the admin servers to sync it hides with admin servers and new identification information is updated and then you can restart the servers managed with the new credentials.
  Note: Sometimes after reboot you can meet the problem as the synchronization with the administration server process is asynchornous, weblogic prints a line saying something like asynchronous operation with the null Server address. If the line is printed sync has arrived and you're good. In case you do not see the line to reboot once again and you will see the line after which you can restart with the new credentials.

• Migration implementation of weblogic 10.3 to 12.1.2 get error

  I am upgarding application of weblogic 10.3 to 12.1.2. It is a Web based service application. So when you run webservice error

  org.apache.xmlbeans.XmlException: org.apache.xmlbeans.XmlException: error: unexpected element: TAG_END. Is it because of weblogic 12 c as it can not run more xml bean. Is that we should move xmlbean to jaxb? Please answer.

  Apache XML beans is still listed as a supported standard web service using the web services JAX - RPC 2.0

  https://docs.Oracle.com/middleware/1213/WLS/WSOVR/WebLogic-Web-service-stand.htm#WSOVR143

  Please check if you are Member of the above standard.

  Thank you

  Vijaya

• Missing for DBAdapter cluster Weblogic Congfiguration outbound connection Pool entry

  Hello

  When I created an entry for outbound connection pool in DBAdapter weblogic console in a clustered (1-Admin server and servers managed by 2) environment and updated adapter DB, I have identified only input connection is updated in that plan a managed server and other server managed, it is not updated. For this reason, we are unable to access the data sources for some requests for the application.

  As a work-around if we plan. XML file to another server managed manually with update and DB adapter connection entry, we are able to find the entrance of connection for managed servers.

  Outside work around there at - it another solution to this problem so that I can add a connection adapter DB Console entry that will update the two plan files.

  Thank you and best regards,

  Vincent

  Can I propose to maintain the file plan of shared drive accessible from all nodes in the server, this will reduce the manual work.

  Concerning

  Albin I

  http://www.albinsblog.com/

• Benefits of implementing reserves memory in a display environment?

  I'm under low disk space and the questions came on the addition of memory reservations for help. What are the advantages and disadvantages of other than disk setting reserves bulky?  If I set up a reservation, is the page file created yet?

  I think the most important thing is saving disk space.    The only con is that if you set reservations @ 100% you lose your memory overcomittment.    I have seen that the 50% number floating around forums a couple of times.    Which resembled what most people thought was the sweet spot.

  The pagefile is size of memory - reservation of memory, so if you have a machine to 2 GB and 1 GB of reserve you more a pagefile of 1 GB.

• Deployment issue - cluster Weblogic environment

  Hello Experts,
  
  I've added a new menu item and my own java class devloped, jsp and updated struts-config, the tiles-def xml file, but the menu item gets not correctly displayed in the IOM.
  
  1. creates a new menu item in Console Design.
  2. this menu item has been added to the system ADMINISTRATOR group.
  3 update of xlWebAdmin.properties, xlDefaultAdmin.properties, xlWebAdmin_en_US.properties file.
  4. place the java class custom directory classes
  5 placed JSPS in directory pages & tiles and as a consequence the entries in the struts-config file and tiles-def file.
  
  Now, I did the steps above in a stand-alone Weblogic instance and it worked and displays the menuitem (copy in the menu Admin tasks)
  
  Now I followed the same steps in a Weblogic clusterted environment, it just displays the menuitem as
  "Menuitem.Adm - Tasks.Copy" and when I click to up page not found error.
  
  Am I missing amything? Please help me.
  
  Thank you
  INIYA

  When you say Clustered then you need to make changes in the folder Dir stage, have you done this?

  Go to bea\user_projects\domain\urdomain\server\manageserver\stage\...

  Here, in classes, see .properties file. These files are updated?

• Implementation of WebLogic in Eclipse

  Hello
  
  I am running Windows XP with Eclipse 3.4 and have a local installation of WebLogic 9.2.2. I'm a little confused as to how to tell to overshadow my domain specifications. He asks me to domain name and the field House...
  
  http://screencast.com/t/uupX3XrWW
  
  How can I know what is the House of field?
  
  Thanks,-Dave

  Very likely, it will be 'c:\bea\user_projects\domains\base_domain '.

• Cannot replicate session on weblogic cluster

  Hi all
  
  I try to simulate cluster weblogic on a single machine. But why my weblogic installation can not replicate the session to another server? I'm trying to listen to HttpSessionListener for any event (session create or destroy), but only one server to deal with this application for handling and create the session. the other doesn't. where is my wrong setting?
  
  and when I try to access Internet without session, the server is reactivated to manage demand. but when the session, have already asked will stick only to a server for each session, I try to use weblogic 9 and 10.3. the two behavior is the same.
  
  Here is my setup of weblogic:
  
  Manage the server:
  
  1 address (localhost:7004); name (ms1); machine (mcn1)
  2. address (localhost:7005); name (ms2); machine (mcn1)
  
  each session on the managed server object is serializable.
  
  and on each server to manage weblogic.xml:
  
  < wls:session - descriptor >
  < wls:debug - active > true < / wls:debug - active >
  < wls: persistent-store-type > back < / wls: persistent-store-type >
  < wls: sharing > true < / wls: sharing enabled >
  < / wls:session - descriptor >
  
  Cluster: Cluster mode messaging is multicast. I try MulticastTest and its working fine.
  
  Load Balancing: I create the new domain (localhost:7002) and use the weblogic proxy for load balancing. just copy paste documentation.
  
  WebLogic.xml on proxy domain (load balancing)
  
  <! DOCTYPE weblogic-web-app PUBLIC "-//BEA Systems, Inc.//DTD Web Application 9.1 / / IN" "http://www.bea.com/servers/wls810/dtd/weblogic".
  "810-web - jar.dtd" >
  < weblogic-web-app >
  < context root > / < / context root >
  < / weblogic-web-app >
  
  Web.XML on proxy domain (load balancing)
  
  <! DOCTYPE web - app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3 / / IN" "http://java.sun.com/dtd/web-app_2_3.dtd"; >
  <>web - app
  < servlet >
  < name servlet - > HttpClusterServlet < / servlet-name >
  > the servlet class <
  weblogic.servlet.proxy.HttpClusterServlet
  < / servlet-class >
  < init-param >
  WebLogicCluster < param-name > < / param-name >
  localhost:7004 < param-value > | localhost:7005 < / param-value >
  < / init-param >
  < init-param >
  KeyStore < param-name > < / param-name >
  < param-value > / mykeystore < / param-value >
  < / init-param >
  < init-param >
  KeyStoreType < param-name > < / param-name >
  JKS < param-value > < / param-value >
  < / init-param >
  < init-param >
  PrivateKeyAlias < param-name > < / param-name >
  passalias < param-value > < / param-value >
  < / init-param >
  < init-param >
  KeyStorePasswordProperties < param-name > < / param-name >
  mykeystore.properties < param-value > < / param-value >
  < / init-param >
  < / servlet >
  < servlet-mapping >
  < name servlet - > HttpClusterServlet < / servlet-name >
  < url-pattern > / < / url-pattern >
  < / servlet-mapping >
  < servlet-mapping >
  < name servlet - > HttpClusterServlet < / servlet-name >
  *.jsp < url-pattern > < / url-pattern >
  < / servlet-mapping >
  < servlet-mapping >
  < name servlet - > HttpClusterServlet < / servlet-name >
  *.htm < url-pattern > < / url-pattern >
  < / servlet-mapping >
  < servlet-mapping >
  < name servlet - > HttpClusterServlet < / servlet-name >
  *.html < url-pattern > < / url-pattern >
  < / servlet-mapping >
  < / web - app >
  
  Thank you.
  
  Edited by: jeggy 12 January 2011 01:47

  The webserver plugin using the link session (or sessions).

  How does him choice of server is explained in the figure presented here: http://download.oracle.com/docs/cd/E11035_01/wls100/plugins/apache.html#wp113659

  Here you can see if a sessionid is presented that it routes the request to the primairy server. A server primairy and secondairy is chosen in the cluster on a first request.
  The format of the session ID is: JSESSIONID = SESSION_ID. PRIMARY_JVMID_HASH! SECONDARY_JVM_HASH! CREATION_TIME. The first part is used by the
  implementation session in WebLogic Server to search the customer HttpSession object in the context of tracking web application. Subsequent parts of the session ID
  are used to identify the primary and secondary servers for this customer in a WebLogic Server cluster and track time created for this session.

  When you make a server - this is when failover occurs - the secondairy server takes over the request. Now, you would probably see that a session is created on the other server.

• Restart weblogic cluster instances of command line

  Hi team,

  We have an obligation to cluster weblogic instance recovery every week.

  Currently, it is a manual activity by following - to connect to the console of the server admin-> go to Clusters-> choose Cluster-> restart all the cases one by one.

  We have 8 instances and 4 application servers [1:2 ratio], each application server succeeded the server node, which is responsible for 2 instances

  As far as I know, we can start/deploy applications through deployment using WLST/weblogic. The Deployment Manager

  Please can you suggest a UNIX utility by which we can restart the weblogic directly from unix/linux server cluster instances.

  Thanks in advance.

  Hello

  You can use WLST to the power via the script Manager node as you do it manually it forms the console. You can start the entire cluster at the same time:

  Start ('CLUSTER1', 'Cluster');

  or server by server:

  Start ('C1_MAN_01', 'Server');

  Start ('C1_MAN_01', 'Server');

  A complete script should connect to the AdminServer first:

  Connect('weblogic','password123','t3://localhost:7001');

  Start ('Cluster_Name', 'Cluster');

  Exit();

  If you need start the AdminServer as well, you can connect directly to the NodeManager and start it in nmStart.

  To stop the server/cluster, you can use the command "shutdown":

  stop ('SOACluster', 'Clusters', force = 'true');   -Add strength = "true" setting so that you do not wait for the present session of the user on this server.

  Or you can get the current status via command line:

  State ('SOACluster', 'Cluster');

  Once the sequence of commands you want in your WLST script, you can call it UNIX script as below:

  . /U01/Oracle/MW_HOME/wlserver_10.3/Server/bin/setWLSEnv.sh

  Java weblogic. WLST /u01/oracle/MW_HOME/wlserver_10.3/server/bin/startDomainScript.jy