Controlling WebLogic Cluster

Other than the switches in the WebLogic XML file. Are there some admin
classes that are available to control the way clustering is handled by
WebLogic, from a remote console? At work, we are trying to find a way to
monitor the fail-over activity and to be able to control whether or not it
actually happens depending on what is going on in the environment. We want
to be able to write a java program that can talk to some public WebLogic
admin class to probe EJBs and the server for fail-over activity and
status... Is there such a class? Anyone have experience in doing this?
thanks,
ryan

The details of the functionality that you're looking for are not available
in the product today. We are adding things along this line in our next
release, which will be going into beta early this fall.
Thanks,
Michael
Michael Girdley
BEA Systems Inc
"Ryan Jones" <[email protected]> wrote in message
news:[email protected]..
Other than the switches in the WebLogic XML file. Are there some admin
classes that are available to control the way clustering is handled by
WebLogic, from a remote console? At work, we are trying to find a way to
monitor the fail-over activity and to be able to control whether or not it
actually happens depending on what is going on in the environment. We want
to be able to write a java program that can talk to some public WebLogic
admin class to probe EJBs and the server for fail-over activity and
status... Is there such a class? Anyone have experience in doing this?
thanks,
ryan

Similar Messages

Timesten database driver is not supported in Weblogic Cluster mode domain??

Does anybody encounter this situation??
I have 2 managed server in a Weblogic cluster domain and there is DataSource for them.
In each managed server, I setup Timesten client correctly to connect to Timesten Oracle DB cache server.
But when we start each of managed server, I will get exception:
####<Nov 22, 2010 6:03:24 PM CST> <Critical> <WebLogicServer> <Machine1> <Main Thread> <<WLS Kernel>> <1290420204498> <BEA-000386> <Server subsystem failed. Reason: java.lang.AssertionError:
java.lang.AssertionError: Unsupported database driver
at weblogic.cluster.singleton.QueryHelperImpl.getTimeFunction(QueryHelperImpl.java:88)
at weblogic.cluster.singleton.QueryHelper.getLeaseOwnerQuery(QueryHelper.java:110)
at weblogic.cluster.singleton.DatabaseLeasingBasis.pingDB(DatabaseLeasingBasis.java:411)
at weblogic.cluster.singleton.DatabaseLeasingBasis.getJDBCConnection(DatabaseLeasingBasis.java:465)
at weblogic.cluster.singleton.DatabaseLeasingBasis.getJDBCConnection(DatabaseLeasingBasis.java:507)
at weblogic.cluster.singleton.DatabaseLeasingBasis.findOwner(DatabaseLeasingBasis.java:305)
at weblogic.cluster.singleton.LeaseManager.findOwner(LeaseManager.java:218)
at weblogic.cluster.singleton.MigratableServerService.findSingletonMaster(MigratableServerService.java:201)
at weblogic.cluster.singleton.ReplicatedSingletonServicesStateManager.syncStateFromActiveStateManager(ReplicatedSingletonServicesStateManager.java:618)
at weblogic.cluster.singleton.ReplicatedSingletonServicesStateManager.<init>(ReplicatedSingletonServicesStateManager.java:168)
at weblogic.cluster.singleton.SingletonMonitor.<init>(SingletonMonitor.java:97)
at weblogic.cluster.singleton.SingletonMaster.<init>(SingletonMaster.java:44)
at weblogic.cluster.singleton.MigratableServerService.initialize(MigratableServerService.java:142)
at weblogic.cluster.singleton.MigratableServerService.start(MigratableServerService.java:436)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
But if I create a standalone domain, still use the same datasource(still this timesten server), weblogic server can start successfully.
BR,
Peng

Hi,
I have use WebLogic Server Console, tree: Services -> JDBC -> Connection Pools. Then I have choose 'Configure a new JDBC Connection Pool...':
1.) as 'Database Type:' I have select MySQL (version using com.mysql.jdbc.Driver) -> click 'Continue' button;
2.) 'Database Name:' = OSS; 'Host Name' = localhost; 'Port' = 3306; 'Database User Name:' = root; -> click 'Continue' button;
3.) 'Driver Classname:' = com.mysql.jdbc.Driver; 'URL:' = jdbc:mysql://localhost:3306/OSS; 'Database User Name:' = root; 'Properties:' = user=root -> click to 'Test Driver Configuration' button.
After click on test driver button I get message: JDBC driver is not on the CLASSPATH.
But when I check System variables (in Control Panel -> System) I have set up following:
CLASSPATH=.;C:\DB2\java\db2java.zip;C:\DB2\java\db2jcc.jar;C:\DB2\java\sqlj.zip;C:\DB2\java\db2jcc_license_cu.jar;C:\DB2\bin;C:\DB2\java\common.jar;C:\DBS\JDBC\db2\db2.jar;C:\DB2\BIN;c:\mysql.jar
The last value is 'c:\mysql.jar' and that's the mysql jdbc driver located on c:\.
I don't understand why weblogic cannot find it.
Any idea?
Thanks in advance for help,
with best regards,
Julian Legeny

Help on Coherence + Weblogic Cluster configuration

Hi,
I am new to Coherence. I am exploring coherence to fulfill one of my requirement.
My requirement : I have an application deployed on a Web logic Server clustered environment. I need to cache the application specific data(java maps) and that should be available for all nodes of the WLS cluster. The application data that's being cached, can be updated from any of the node from the WLS cluster and updated application data from the cache should be available for all the nodes of the WLS cluster. The nodes in the WLS cluster resides in different machines from different locations.
Can I use coherence as a caching services for my requirement?
If Yes, do I need to start a coherence cache server on each node of the WLS cluster?
If yes, do I need to specially configure these cache servers, so that these cache servers would communicate each other in case of any data updates in the cache?
It will be great help if you could also provide sample configurations to achieve the above scenarios.
Thanks in advance!
regards,
Srinivas M

You can start one cache server in the network by using for example
# home directory
BEA_HOME="/home/oracle/bea"
export BEA_HOME
# java vendor (for example Oracle or Sun)
JAVA_VENDOR="Oracle"
export JAVA_VENDOR
# cache server klasse
CACHE_SERVER_CLASS="com.tangosol.net.DefaultCacheServer"
export CACHE_SERVER_CLASS
# coherence options
COHERENCE_OPTIONS="-Dtangosol.coherence.management=all"
export COHERENCE_OPTIONS
COHERENCE_OPTIONS="${COHERENCE_OPTIONS} -Dtangosol.coherence.management.remote=true"
#COHERENCE_OPTIONS="${COHERENCE_OPTIONS} -Dtangosol.coherence.cacheconfig=WEB-INF/classes/session-cache-config.xml"
#COHERENCE_OPTIONS="${COHERENCE_OPTIONS} -Dtangosol.coherence.session.localstorage=true"
WL_HOME="${BEA_HOME}/wlserver_10.3"
export WL_HOME
BEA_JAVA_HOME="${BEA_HOME}/jrockit_160_05_R27.6.2-20"
export BEA_JAVA_HOME
SUN_JAVA_HOME="${BEA_HOME}/jdk160_11"
export SUN_JAVA_HOME
if [ "${JAVA_VENDOR}" = "Oracle" ]; then
 JAVA_HOME="${BEA_JAVA_HOME}"
 export JAVA_HOME
 MEM_ARGS="-jrockit -Xms512m -Xmx512m -Xss128k -Xgcprio:throughput"
 export MEM_ARGS
fi
if [ "${JAVA_VENDOR}" = "Sun" ]; then
 JAVA_HOME="${SUN_JAVA_HOME}"
 export JAVA_HOME
 MEM_ARGS="-server -Xmx512m -Xms512m -Xmn256m -Xss128k -XX:PermSize=128m -XX:MaxPermSize=128m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseParallelOldGC -XX:+AggressiveOpts -XX:+UseBiasedLocking"
 export MEM_ARGS
fi
# classpath for the cache server
CLASSPATH="${WL_HOME}/coherence/coherence.jar"
export CLASSPATH
# start the cache server
${JAVA_HOME}/bin/java ${MEM_ARGS} ${COHERENCE_OPTIONS} ${CACHE_SERVER_CLASS}The -Dtangosol.coherence.management=all option gives you some handy information on what the cache is doing by using for example the mbean browser provided by jconsole or jrockit mission control.
You can create an application in which you create a cache, the following shows an example of a servlet
import com.tangosol.net.CacheFactory;
import com.tangosol.net.NamedCache;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Random;
public class TestServlet extends HttpServlet {
 private NamedCache movies;
 public void init() throws ServletException {
 movies = CacheFactory.getCache("repl-movies");
 movies.put(10, new Movie(10, "Rear Window", "Alfred Hitchcock"));
 movies.put(20, new Movie(20, "Vertigo", "Alfred Hitchcock"));
 movies.put(30, new Movie(30, "Double Indemnity", "Billy Wilder"));
 movies.put(40, new Movie(40, "Touch of Evil", "Orson Welles"));
 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 Integer[] integers = {10, 20, 30, 40};
 Random random = new Random();
 while (true) {
 movies.get(integers[random.nextInt(4)]);
}Package the servlet into for example a WAR file and deploy it to a configured WebLogic cluster.
By accessing servlet on the different nodes of the cluster a new cache gets created and added to the
already running DefaultServer.
The hard part is to configure your cache. As you can see in the servlet init we ue something like CacheFactory.getCache("repl-movies");
Coherence default with some example cache configurations which are contained in the coherence.jar (coherence-cache-config.xml).
The following entry is used
<cache-mapping>
 <cache-name>repl-*</cache-name>
 <scheme-name>example-replicated</scheme-name>
</cache-mapping>
<replicated-scheme>
 <scheme-name>example-replicated</scheme-name>
 <service-name>ReplicatedCache</service-name>
 <backing-map-scheme>
 <local-scheme>
 <scheme-ref>unlimited-backing-map</scheme-ref>
 </local-scheme>
 </backing-map-scheme>
 <autostart>true</autostart>
</replicated-scheme>A replicated cache is probably what you need as well. As you want all the data to be available on all nodes. If you want to use
your own cache configuration you can add the option -Dtangosol.coherence.cacheconfig (see the start script for the default server)
A good introduction on Coherence can be found here:
http://www.packtpub.com/article/installing-coherence-3.5-and-accessing-the-data-grid-1
and
http://www.packtpub.com/article/installing-coherence-3.5-and-accessing-the-data-grid-2?utm_source=rk_coherence_abr1_0310&utm_medium=content&utm_campaign=ramsai

How to setup weblogic cluster in 6.1 SP4

          Hi All,
          I have a Licensed weblogic in my solaris servers. I need to test weblogic clustering
          . How can i simulate weblogic clustering is there is any easy steps to do that
          and what should i do in order to make my EJB`s cluster aware. And some ppl say
          that i need to take a seperate weblogic cluster license other than the weblogic
          license.Kindly help me in proceeding further
          Thanks in advance
          Bala.J


Hi
I have same problem at beforetime.
You can do follow:
Step 1:
copy rt.jar form JDK 1.2.1\jre\lib\jar
to J2EE1.2.1\lib\system\
Step 2:
Set J2ee_classpath = c:\j2ee1.2.1\lib\system\rt.jar
Step 3:
Restart computer and J2ee
You can try it
Help can help you
David

Having issue with start weblogic cluster with tangosol cluster

Hi,
Oracle Coherence Version 3.3.1/389p1
Grid Edition: Development mode
We are using Weblogic 8.1.5 with Tangosol 3.3.1 on Linux servers.
And we added the initializing logic in the servlet's init() method to get all NamedCaches and put into the ServletContext.
When we start weblogic cluster, the first weblogic member will startup successfully with following messages :
<Nov 7, 2007 10:12:30 AM EST> <Info> <HTTP> <BEA-101047> <[2007-11-07 10ServletContext(id=259640596,name=clusterqa,context-path=)] initObjects: init>:12:31.565 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational configuration from resource "zip:/home/server/clusterqa/wls81/DOCVIEW/docqa1/.wlnotdelete/extract/docqa1_DOC_clusterqa/jarfiles/WEB-INF/lib/coherence.jar!/tangosol-coherence.xml"
2007-11-07 10:12:31.598 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational overrides from file "/home/www/WEB-INF/lib/tangosol-coherence-override.xml"
Oracle Coherence Version 3.3.1/389p1
Grid Edition: Development mode
Copyright (c) 2000-2007 Oracle. All rights reserved.
2007-11-07 10:12:31.938 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded cache configuration from file "/home/www/WEB-INF/lib/pub-search-cache-config.xml"
2007-11-07 10:12:31.983 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): sun.misc.AtomicLong is not supported on this JVM; using a synchronized counter. Though safe to ignore, you may upgrade to BEA's 1.5 JVM to fix this issue.
2007-11-07 10:12:33.267 Oracle Coherence GE 3.3.1/389p1 <Warning> (thread=Main Thread, member=n/a): UnicastUdpSocket failed to set receive buffer size to 1428 packets (2096304 bytes); actual size is 89 packets (131071 bytes). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance.
2007-11-07 10:12:34.118 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2007-11-07 10:12:37.508 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): Created a new cluster with Member(Id=1, Timestamp=2007-11-07 10:12:33.323, Address=10.5.176.86:8088, MachineId=48982, Edition=Grid Edition, Mode=Development, CpuCount=4, SocketCount=2) UID=0x0A05B056000001161AAB782BBF561F98
2007-11-07 10:12:37.736 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=Invocation:Management, member=1): Service Management joined the cluster with senior service member 1
2007-11-07 10:12:38.168 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=DistributedCache, member=1): Service DistributedCache joined the cluster with senior service member 1
<Nov 7, 2007 10:12:38 AM EST> <Info> <HTTP> <BEA-101047> <[ServletContext(id=259640596,name=clusterqa,context-path=)] xslProcessor: init>
But trying to start the second weblogic member server, the startup process is stucked after tangosol cache initialization and the second weblogic member server never up running. Please see following messages :
<Nov 7, 2007 9:49:38 AM EST> <Info> <HTTP> <BEA-101047> <[ServletContext(id=153019550,name=clusterqa,context-path=)] initDSNames: init>
<Nov 7, 2007 9:49:42 AM EST> <Info> <HTTP> <BEA-101047> <[ServletContext(id=153019550,name=clusterqa,context-path=)] initObjects: init>
2007-11-07 09:49:43.156 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational configuration from resource "zip:/home/server/clusterqa/wls81/DOCVIEW/docqa2/.wlnotdelete/extract/docqa2_DOC_clusterqa/jarfiles/WEB-INF/lib/coherence.jar!/tangosol-coherence.xml"
2007-11-07 09:49:43.188 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational overrides from file "/home/www/WEB-INF/lib/tangosol-coherence-override.xml"
Oracle Coherence Version 3.3.1/389p1
Grid Edition: Development mode
Copyright (c) 2000-2007 Oracle. All rights reserved.
2007-11-07 09:49:43.528 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded cache configuration from file "/home/www/WEB-INF/lib/pub-search-cache-config.xml"
2007-11-07 09:49:43.571 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): sun.misc.AtomicLong is not supported on this JVM; using a synchronized counter. Though safe to ignore, you may upgrade to BEA's 1.5 JVM to fix this issue.
2007-11-07 09:49:44.829 Oracle Coherence GE 3.3.1/389p1 <Warning> (thread=Main Thread, member=n/a): UnicastUdpSocket failed to set receive buffer size to 1428 packets (2096304 bytes); actual size is 89 packets (131071 bytes). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance.
2007-11-07 09:49:45.419 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2007-11-07 09:49:45.555 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): Failed to satisfy the variance: allowed=16, actual=47
2007-11-07 09:49:45.555 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): Increasing allowable variance to 19
2007-11-07 09:49:46.040 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): This Member(Id=2, Timestamp=2007-11-07 09:49:45.69, Address=10.5.176.85:8088, MachineId=48981, Edition=Grid Edition, Mode=Development, CpuCount=4, SocketCount=2) joined cluster with senior Member(Id=1, Timestamp=2007-11-07 09:45:10.205, Address=10.5.176.86:8088, MachineId=48982, Edition=Grid Edition, Mode=Development, CpuCount=4, SocketCount=2)
Could you please explain why it happens, and what should I do to resolve this issues ?
Many Thanks,
Bing

Hi, Gene
Thank you for the response. I will send you our full log files and thread dumps.
I just want to give you more details about our cases :
1. This only happened without starting cache servers (com.tangosol.net.DefaultCacheServer).
2. And our application which are running on weblogic cluster will just call "CacheFactory.getCache("XXX")", and running as the Tangosol DataClient.
3. All weblogic member servers will be up running successfully if our cache servers are up running.
Also I tried to test another case :
Suppose all weblogic instances and cache server instances are up running. Now I trying to restart (kill weblogic instance process and restart) one of the weblogic member, It will up running successfully only if add some sleep times after killing weblogic processes and restarting it. Looks like tangosol cluster need certain time to aware the member has left cluster, then the restart process will be successful.
Questions :
1. Should we start our weblogic cluster only after cache server cluster is up running ?
2. How do we decide how many time we should wait before start new process to join the cache cluster ?
Could you please help to explain this one for me and let us if there anyway we can do to avoid the problem.
Many Thanks !!!
Bing

No communication between the two nodes in weblogic cluster

Hi All,
We have installed weblogic cluster in our environment(LINUX 64-Redhat.5).On one node admin server ,managed server1,on second node we have managed server2.When we try to deploy application on one node it is not getting reflected in othe node.We have ran datagram test to check communication between 2 node.
Here we observed that listener and pulisher are picking wrong IPs not the server Ips.
can any one explain why and what is the problem.
thanks,
sudheer.

Hi Sudheer,
While performing the datagram test you mention the ports and ip so I am not sure how they are picking wrong ip and port. Follow the instructions to perform the test http://coherence.oracle.com/display/COH35UG/Performing+a+Datagram+Test+for+Network+Performance
Re the deployments, you need to ensure that multicast is enabled in your environment and both your managed server are in the same subnet otherwise you need to specify WKA for unicast communication. I am assuming that you are building SOA infrastructure as it internally uses Coherence for deploying applications and you can follow the instructions http://download.oracle.com/docs/cd/E15523_01/core.1111/e12036/extend_soa.htm#CHDEAFJH else use the intructions as mentioned here http://download.oracle.com/docs/cd/E17904_01/web.1111/e13709/features.htm
Hope this helps!
Cheers,
NJ

Timesten database driver is not supported in Weblogic cluster mode??

Does anybody encounter this situation??
I have 2 managed server in a Weblogic cluster domain and there is DataSource for them.
In each managed server, I setup Timesten client correctly to connect to Timesten Oracle DB cache server.
But when we start each of managed server, I will get exception:
####<Nov 22, 2010 6:03:24 PM CST> <Critical> <WebLogicServer> <Machine1> <Main Thread> <<WLS Kernel>> <1290420204498> <BEA-000386> <Server subsystem failed. Reason: java.lang.AssertionError:
java.lang.AssertionError: Unsupported database driver
at weblogic.cluster.singleton.QueryHelperImpl.getTimeFunction(QueryHelperImpl.java:88)
at weblogic.cluster.singleton.QueryHelper.getLeaseOwnerQuery(QueryHelper.java:110)
at weblogic.cluster.singleton.DatabaseLeasingBasis.pingDB(DatabaseLeasingBasis.java:411)
at weblogic.cluster.singleton.DatabaseLeasingBasis.getJDBCConnection(DatabaseLeasingBasis.java:465)
at weblogic.cluster.singleton.DatabaseLeasingBasis.getJDBCConnection(DatabaseLeasingBasis.java:507)
at weblogic.cluster.singleton.DatabaseLeasingBasis.findOwner(DatabaseLeasingBasis.java:305)
at weblogic.cluster.singleton.LeaseManager.findOwner(LeaseManager.java:218)
at weblogic.cluster.singleton.MigratableServerService.findSingletonMaster(MigratableServerService.java:201)
at weblogic.cluster.singleton.ReplicatedSingletonServicesStateManager.syncStateFromActiveStateManager(ReplicatedSingletonServicesStateManager.java:618)
at weblogic.cluster.singleton.ReplicatedSingletonServicesStateManager.<init>(ReplicatedSingletonServicesStateManager.java:168)
at weblogic.cluster.singleton.SingletonMonitor.<init>(SingletonMonitor.java:97)
at weblogic.cluster.singleton.SingletonMaster.<init>(SingletonMaster.java:44)
at weblogic.cluster.singleton.MigratableServerService.initialize(MigratableServerService.java:142)
at weblogic.cluster.singleton.MigratableServerService.start(MigratableServerService.java:436)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
But if I create a standalone domain, still use the same datasource(still this timesten server), weblogic server can start successfully.
BR,
Peng
Edited by: user8028210 on Nov 25, 2010 1:18 AM
Edited by: user8028210 on Nov 25, 2010 1:19 AM

Does anybody encounter this situation??
I have 2 managed server in a Weblogic cluster domain and there is DataSource for them.
In each managed server, I setup Timesten client correctly to connect to Timesten Oracle DB cache server.
But when we start each of managed server, I will get exception:
####<Nov 22, 2010 6:03:24 PM CST> <Critical> <WebLogicServer> <Machine1> <Main Thread> <<WLS Kernel>> <1290420204498> <BEA-000386> <Server subsystem failed. Reason: java.lang.AssertionError:
java.lang.AssertionError: Unsupported database driver
at weblogic.cluster.singleton.QueryHelperImpl.getTimeFunction(QueryHelperImpl.java:88)
at weblogic.cluster.singleton.QueryHelper.getLeaseOwnerQuery(QueryHelper.java:110)
at weblogic.cluster.singleton.DatabaseLeasingBasis.pingDB(DatabaseLeasingBasis.java:411)
at weblogic.cluster.singleton.DatabaseLeasingBasis.getJDBCConnection(DatabaseLeasingBasis.java:465)
at weblogic.cluster.singleton.DatabaseLeasingBasis.getJDBCConnection(DatabaseLeasingBasis.java:507)
at weblogic.cluster.singleton.DatabaseLeasingBasis.findOwner(DatabaseLeasingBasis.java:305)
at weblogic.cluster.singleton.LeaseManager.findOwner(LeaseManager.java:218)
at weblogic.cluster.singleton.MigratableServerService.findSingletonMaster(MigratableServerService.java:201)
at weblogic.cluster.singleton.ReplicatedSingletonServicesStateManager.syncStateFromActiveStateManager(ReplicatedSingletonServicesStateManager.java:618)
at weblogic.cluster.singleton.ReplicatedSingletonServicesStateManager.<init>(ReplicatedSingletonServicesStateManager.java:168)
at weblogic.cluster.singleton.SingletonMonitor.<init>(SingletonMonitor.java:97)
at weblogic.cluster.singleton.SingletonMaster.<init>(SingletonMaster.java:44)
at weblogic.cluster.singleton.MigratableServerService.initialize(MigratableServerService.java:142)
at weblogic.cluster.singleton.MigratableServerService.start(MigratableServerService.java:436)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
But if I create a standalone domain, still use the same datasource(still this timesten server), weblogic server can start successfully.
BR,
Peng
Edited by: user8028210 on Nov 25, 2010 1:18 AM
Edited by: user8028210 on Nov 25, 2010 1:19 AM

Single sign-on in weblogic cluster?

 I am using wls 7.0 sp1 that form a cluster by two managed servers each at different
 physical machine.
 In front of the servers, a hardware load-balancer providing a virtual ip that
 mapped to the real ip of the 2 machines.
 I deployed a web application to the cluster. The html & jsp files are all protected
 by Form Based Authorization.
 My expectation is, whenever I sign-on to the first managed server, the login credential
 should also be valid for the second managed server.
 But it is not the case.
 My situation is:
 - open brower with url: http://virtual.ip:7001/admin.jsp
 - the load balancer map the request to my first managed server.
 - the response from the first managed server prompt the login page for username
 and password.
 - after POST the information, my target admin.jsp page display properly.
 - when I click the link within the admin.jsp page, eg. http://virtual.address:7001/status.jsp
 there is two possibilities:
 1. the load balancer route the request to the first managed server and everything
 well.
 or
 2. the load balancer route the request to the second managed server and response
 with login page again.
 The second case is definitely not what I expected.
 Question:
 Is it the default behavior of Weblogic cluster on the single sign-on? I think
 my login is against a WLS domain (at least a cluster), not to a specific web server!
 Any comments are welcome.


 Note my answer is not directly related to your question, but it might help.
 From my experience to configure WL cluster with hardware load balancer, the session
 stick (layer 7 switch) should be used (either using the session cookie, or ServerID
 cookie). That is, unless one instance is down, all requests from the same session
 are better go to the same server. I ever tried round-robin or random load balance
 policy at hardware load balancer without session stick, and the result was as
 disappointing as you have seen.
 "franky c." <[email protected]> wrote:
 >
 >
 >I am using wls 7.0 sp1 that form a cluster by two managed servers each
 >at different
 >physical machine.
 >In front of the servers, a hardware load-balancer providing a virtual
 >ip that
 >mapped to the real ip of the 2 machines.
 >I deployed a web application to the cluster. The html & jsp files are
 >all protected
 >by Form Based Authorization.
 >
 >My expectation is, whenever I sign-on to the first managed server, the
 >login credential
 >should also be valid for the second managed server.
 >
 >But it is not the case.
 >
 >My situation is:
 >- open brower with url: http://virtual.ip:7001/admin.jsp
 >- the load balancer map the request to my first managed server.
 >- the response from the first managed server prompt the login page for
 >username
 >and password.
 >- after POST the information, my target admin.jsp page display properly.
 >- when I click the link within the admin.jsp page, eg. http://virtual.address:7001/status.jsp
 > there is two possibilities:
 > 1. the load balancer route the request to the first managed server
 >and everything
 >well.
 > or
 > 2. the load balancer route the request to the second managed server
 >and response
 >with login page again.
 >
 >The second case is definitely not what I expected.
 >
 >Question:
 >Is it the default behavior of Weblogic cluster on the single sign-on?
 >I think
 >my login is against a WLS domain (at least a cluster), not to a specific
 >web server!
 >
 >
 >Any comments are welcome.
 >
 >

About weblogic proxy call weblogic cluster's servlet error

 I use weblogic server 5.1, configruation tow weblogic cluster server and a weblogic
 web server, through weblogic web server received browser's http request only,
 weblogic cluster server do with jsp and servlet, now html&jsp is ok but servlet
 can not do with, if through weblogic cluster server do with jsp and servlet direct,
 it's ok.
 this is my weblogic.properties section:
 weblogic.httpd.register.*.html=\
 weblogic.servlet.internal.HttpClusterServlet
 weblogic.httpd.initArgs.*.html=\
 defaultServers=132.147.35.221:7001|132.147.35.222:7001
 weblogic.httpd.register.*.jsp=\
 weblogic.servlet.internal.HttpClusterServlet
 weblogic.httpd.initArgs.*.jsp=\
 defaultServers=132.147.35.221:7001|132.147.35.222:7001
 weblogic.httpd.register.*.servlet=\
 weblogic.servlet.internal.HttpClusterServlet
 weblogic.httpd.initArgs.*.servlet=\
 defaultServers=132.147.35.221:7001|132.147.35.222:7001
 these are weblogic server as proxy webserver errors:
 星期一 八月 20 17:42:38 GMT+08:00 2001: <ServletContext-General>
 helloWorld: init
 星期一 八月 20 17:42:38 GMT+08:00 2001:<E> <ServletContext-General>
 Servlet failed with Exception
 java.lang.NullPointerException
 at weblogic.servlet.internal.HttpClusterServlet.init(HttpClusterServlet.java:99)
 at weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubImpl.java:499)
 at weblogic.servlet.internal.ServletStubImpl.createInstances(ServletStubImpl.java,
 Compiled Code)
 at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:442)
 at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:200)
 at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:115)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:922)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:886)
 at weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContextManager.java:269)
 at weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:380)
 at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:268)
 at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled Code)
 tell me a right configuration please ,thanks.


############### Cluster Proxy Configuration ########################
 weblogic.httpd.register.cluster=weblogic.servlet.internal.HttpClusterServlet
 weblogic.httpd.initArgs.cluster=defaultServers=132.147.35.221:7001|132.147.3
 5.222:7001
 weblogic.httpd.defaultServlet=cluster
 weblogic.allow.execute.weblogic.clustler=everyone
 "chris" <[email protected]> wrote in message
 news:[email protected]...
 >
 > I use weblogic server 5.1, configruation tow weblogic cluster server and
 a weblogic
 > web server, through weblogic web server received browser's http request
 only,
 > weblogic cluster server do with jsp and servlet, now html&jsp is ok but
 servlet
 > can not do with, if through weblogic cluster server do with jsp and
 servlet direct,
 > it's ok.
 >
 > this is my weblogic.properties section:
 > -----------------------------------------------------------------
 > weblogic.httpd.register.*.html=\
 > weblogic.servlet.internal.HttpClusterServlet
 > weblogic.httpd.initArgs.*.html=\
 > defaultServers=132.147.35.221:7001|132.147.35.222:7001
 > weblogic.httpd.register.*.jsp=\
 > weblogic.servlet.internal.HttpClusterServlet
 > weblogic.httpd.initArgs.*.jsp=\
 > defaultServers=132.147.35.221:7001|132.147.35.222:7001
 > weblogic.httpd.register.*.servlet=\
 > weblogic.servlet.internal.HttpClusterServlet
 > weblogic.httpd.initArgs.*.servlet=\
 > defaultServers=132.147.35.221:7001|132.147.35.222:7001
 > -----------------------------------------------------------------
 >
 >
 >
 > these are weblogic server as proxy webserver errors:
 > -----------------------------------------------------------------
 > 星期一 八月 20 17:42:38 GMT+08:00 2001:
 <ServletContext-General>
 > helloWorld: init
 > 星期一 八月 20 17:42:38 GMT+08:00 2001:<E>
 <ServletContext-General>
 > Servlet failed with Exception
 > java.lang.NullPointerException
 > at
 weblogic.servlet.internal.HttpClusterServlet.init(HttpClusterServlet.java:99
 > at
 weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubImpl.java
 :499)
 > at
 weblogic.servlet.internal.ServletStubImpl.createInstances(ServletStubImpl.ja
 va,
 > Compiled Code)
 > at
 weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.jav
 a:442)
 > at
 weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:20
 0)
 > at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
 :115)
 > at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
 l.java:922)
 > at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
 l.java:886)
 > at
 weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContext
 Manager.java:269)
 > at
 weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:380)
 > at
 weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:268)
 > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled
 Code)
 > -----------------------------------------------------------------
 >
 > tell me a right configuration please ,thanks.

Patchset3 (11.1.1.4/wls 10.3.4) Remote debugging JDPA in weblogic cluster

Hi,
I am using Patchset3 (JDeveloper 11.1.1.4/ weblogic server 10.3.4). I was wondering how i can remote debug with
a) weblogic managed server that is part of a weblogic cluster
b) the cluster itself that contains multiple managed servers.
Note that i do understand how to remote debug against a weblogic server (e.g. http://jdeveloperfaq.blogspot.com/2009/12/faq-4-how-to-remote-debug-adf.html), but have not been able to find out how i can achieve this against a cluster that has multiple managed servers. Any directions will be appreciated.
Thanks,

Hi,
haven't tried it but here are some suggestions that might be of help:
1) Each managed server for each cluster node should be setup for remote debugging. This means that each managed server must be started with the -Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,address=4000,server=y,suspend=n* options in the WebLogic start-up script. Also Tunneling must be enabled for each managed server for each cluster node.
2) Make sure that you specify a different connection port for each managed server. This is indicated by the address* specifier above.
3) It seems logical to me that you will need to start separate instances of JDeveloper - one for each managed server that you need to attach to.
Let us know how it turns out,
Nick

Caching read-only data in a weblogic cluster: Need Help

Hello,
I'm working on the development of a web site that will be based on a weblogic cluster spread across several weblogic instances running on several unix boxes.
To avoid frequent hits to the database, I would like hold a huge amount of data in the application's in-memory cache. The idea is to query the database at startup and store the results in memory for the life of the JVM.
I have three questions around this:
1. Is it advisable to store this data in the form of read-only entity beans?
2. If not, what other options do I have?
3. In some rare cases, a back-end script might change (and commit) data contained in one or two of these 64000 records. What is the best way of propagating these data changes across the cluster?
Any help in this regard would be greatly appreciated.
Regards,
Dipak Jha

Could somebody please guide me on this?
Dipak Jha

Apache Proxy Plugin with SSL in Weblogic Cluster

Hi,
I have configured a weblogic cluster and configured SSL. Then I configured the apache plugin to work with the cluster machines with non ssl and worked succesfull but when I configured the ssl communication between apache and weblogic I´m having problems.
The actual configuration is:
<Location /spmlws>
SetHandler weblogic-handler
WLLogFile /var/log/httpd/tmpweblogic1.log
DebugConfigInfo ON
Debug ALL
KeepAliveEnabled ON
KeepAliveSecs 15
WebLogicPort 7002
SecureProxy ON
TrustedCAFile /opt/freeware/etc/httpd/conf/trustedCA35cert.pem
TrustedCAFile /opt/freeware/etc/httpd/conf/trustedCA36cert.pem
WLProxySSL ON
RequireSSLHostMatch false
WebLogicCluster machine35:7002,machine36:7002
EnforceBasicConstraints false
</Location>
The problem is that the plugin always takes the last TrustedCAFile. In this way if machine36 is down the plugin tries to send all the request to machine35 but it takes the TrustedCAFile for the machine36 (/opt/freeware/etc/httpd/conf/trustedCA36cert.pem) hence the apache complains
[Wed Jun 30 11:13:56 2010] [error] [client 10.19.232.249] ap_proxy: trying GET /spmlws/OIMProvisioning at backend host '10.19.232.97/7002; got exception 'WRITE_ERROR_TO_SERVER [os error=0, line 796 of ../nsapi/URL.cpp]: '
What can I do to have multiple TrustedCAFile or to have working the communication between apache and weblogic cluster using SSL?
thanks in advance

Acording to the documentation this is not possible.
One way to achieve the load balancing of n-weblogic servers in cluster using ssl is to configure de HttpClusterServlet.

Installing LC 8.2 on WebLogic cluster

Hi, We are trying to install LC 8.2 on a WebLogic cluster running on Solaris (SunOS 5.10) with a Oracle Database (10.2.0.3) The configuration manager stops during the task 'LiveCycle Component Deployment' with the following output: Loading state from service container Deploying DSC adobe-ejbprovider-dsc.jar DSC already running adobe-ejbprovider-dsc.jar Deploying DSC adobe-soapConnector-dsc.jar DSC already running adobe-soapConnector-dsc.jar Deploying DSC adobe-remotingConnector-dsc.jar DSC already running adobe-remotingConnector-dsc.jar Deploying DSC adobe-usermanager-dsc.jar DSC already running adobe-usermanager-dsc.jar Deploying DSC adobe-usermanager-util-dsc.jar DSC already running adobe-usermanager-util-dsc.jar Deploying DSC adobe-jobmanager-dsc.jar DSC already running adobe-jobmanager-dsc.jar Deploying DSC adobe-scheduler-weblogic-dsc.jar DSC already running adobe-scheduler-weblogic-dsc.jar Deploying DSC adobe-cacheservice-dsc.jar DSC already running adobe-cacheservice-dsc.jar Deploying DSC adobe-event-dsc.jar DSC already running adobe-event-dsc.jar Deploying DSC adobe-emailprovider-dsc.jar DSC already running adobe-emailprovider-dsc.jar Deploying DSC adobe-fileprovider-dsc.jar DSC already running adobe-fileprovider-dsc.jar Deploying DSC adobe-truststore-dsc.jar DSC already running adobe-truststore-dsc.jar Deploying DSC adobe-workflow-dsc.jar DSC already running adobe-workflow-dsc.jar Deploying DSC adobe-repository-dsc.jar DSC already running adobe-repository-dsc.jar Deploying DSC adobe-repository-provider-dsc.jar DSC already running adobe-repository-provider-dsc.jar Deploying DSC adobe-applicationmanager-dsc.jar DSC already running adobe-applicationmanager-dsc.jar Deploying DSC adobe-businesscalendar-dsc.jar DSC already running adobe-businesscalendar-dsc.jar Deploying DSC adobe-email-dsc.jar DSC already running adobe-email-dsc.jar Deploying DSC adobe-fileutils-dsc.jar DSC already running adobe-fileutils-dsc.jar Deploying DSC adobe-ftp-dsc.jar DSC already running adobe-ftp-dsc.jar Deploying DSC adobe-jdbc-dsc.jar DSC already running adobe-jdbc-dsc.jar Deploying DSC adobe-jms-dsc.jar DSC already running adobe-jms-dsc.jar Deploying DSC adobe-ldap-dsc.jar DSC already running adobe-ldap-dsc.jar Deploying DSC adobe-variablelogger-dsc.jar DSC already running adobe-variablelogger-dsc.jar Deploying DSC adobe-webservice-dsc.jar STDOUT fra configurationManager'en siger f.eks. flg: [2008-12-29 16:24:25,132], SEVERE, Thread-29, com.adobe.livecycle.lcm.feature.deployment.DeployDSCs, Failed to deploy component /export/home/domadob/projects/livecycle8.2/deploy/adobe-webservice-dsc.jar. com.adobe.livecycle.lcm.core.LCMException[ALC-LCM-030-200]: Failed to deploy component /export/home/domadob/projects/livecycle8.2/deploy/adobe-webservice-dsc.jar. at com.adobe.livecycle.lcm.feature.deployment.DeployDSCs.deployDSCFiles(DeployDSCs.java:39 6) at com.adobe.livecycle.lcm.feature.deployment.DeployDSCs.deployDSCs(DeployDSCs.java:149) at com.adobe.livecycle.lcm.feature.deployment.DeployDSCsTask$ActualTask.<init>(DeployDSCsT ask.java:84) at com.adobe.livecycle.lcm.feature.deployment.DeployDSCsTask$1.construct(DeployDSCsTask.ja va:56) at com.adobe.livecycle.lcm.core.tasks.SwingWorker$2.run(SwingWorker.java:114) at java.lang.Thread.run(Thread.java:595) Caused by: java.io.IOException: ORA-22990: LOB locators cannot span transactions at com.adobe.pof.adapter.oracle.Oracle9iAdapter.updateObject(Oracle9iAdapter.java:655) at com.adobe.pof.adapter.JDBCAdapter.updateObject(JDBCAdapter.java:479) at com.adobe.pof.omapi.POFObjectManagerImpl.writeObject(POFObjectManagerImpl.java:254)

Hello,
Could you get any answers for this apart from the forum? I face the same situation on a non-clustered WebSphere server. We have a case open but no solution yet...
The error message is as follows:
[2008-12-31 17:55:48,689], SEVERE , Thread-5, com.adobe.livecycle.lcm.feature.deployment.DeployDSCs, Failed to deploy component ../working/deployLC/deploy/adobe-scheduler-websphere-dsc.jar.
Regards

Singleton Classes in Weblogic cluster

Hi
Our application is having singleton classes which we refresh programatically ;though very rarely. We need to move our application into a weblogic cluster. The sigleton class refresh also needs to reflect across the servers :
I could see the SingletonService API here http://download.oracle.com/docs/cd/E12839_01/apirefs.1111/e13941/weblogic/cluster/singleton/SingletonService.html. This contain an activate() and deactivate() .Can we call this activate() method to refresh the singleton object whenever there is a refresh required ? Can we define multiple singleton service classes in the cluster ?
Thanks
Suneesh

I've same issue with singleton service...
1) I’ve created a cluster MyCluster with Man1 & Man2 managed instances.
2) I’ve created singleton.jar out of TestCache.java, which is a singleton cache and have deployed it to the MyCluster.
3) I’ve created man.jar out of StartupClassMan.java, which is a startup class and have deployed it to the MyCluster. And I’ve specified this as startup class for the whole MyCluster.
4) For MyCluster, I’ve specified com.mytest.TestCache.class as singleton service with preferred server as Man1 with migratable to Man2.
5) I run Man1, startup class StartupClassMan is invoked and it gets reference to TestCache, populates the cache & prints size as 1.
6) Now when I run Man2, startup class StartupClassMan is invoked and it get references to TestCache & populates the cache & prints size as 1 only.
For some reason, TestCache is not considered as true singleton. If it is true singleton, running Man2 should have printed size 2 as Man1 has already put one entry into the cache.
And I also don't see activate & deactivate method being called when I run Man1 or Man2 servers. Any help on this is really appreciated.
package com.mytest;
import java.util.Map;
import java.util.HashMap;
public class TestCache implements weblogic.cluster.singleton.SingletonService
private static TestCache testCache = new TestCache();
private Map<String, String> mapCache = new HashMap<String, String>();
private TestCache() {}
public void activate() {
System.out.println("TestCache activate called");
public void deactivate() {
System.out.println("TestCache deactivate called");
public static TestCache getTestCache() {
return testCache;
public void put(String key, String value) {
mapCache.put(key, value);
public String get(String key) {
return mapCache.get(key);
public void remove(String key) {
mapCache.remove(key);
public int size() {
return mapCache.size();
package com.mytest;
public class StartupClassMan
public static void main(String args[]) {
System.out.println("StartupClassMan loaded");
TestCache testCache = TestCache.getTestCache();
testCache.put("Man1","Man1");
System.out.println("size: "+testCache.size());
}

Libproxy sp12 behind a firewaill fails to connect to weblogic cluster

Two WLS 5.1 SP11 clustering, iPlanet4.1 w/wlproxy plugin, Solaris Box. There is a firewall in between the iPlanet WebServer and the weblogic cluster. The NSAPI proxy plugin ( libproxy.so )connects successfully to one of the weblogic cluster for the first time using the NAT IPs of the cluster m/c maintained in the obj.conf. The Response contains the actual IP of the weblogic cluster m/c which gets updated in the proxy and uses that to connect to the cluster and firewall blocks that as it is not the NAT IP. But this works fine in libproxy of weblogic 6.1 unfortunately this has a problem when the data that gets passed is more than 1000 chars.

shouldn't the connect string look like jdbc:oracle:thin:@MyIP:1521:MySID ?

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