Behavior of load balancers - Oracle weblogic 10.0 - immediate help required

Hi,
We have an environment where we have two load balancing servers for one application. We are facing an issue, where a request which comes from the front end (Ajax request) is re-submitted exactly after 3 minutes in this load balancing environment. At any time, one server is taking the requests, but the request is getting re-submitted after every 3 mins. First time, the request is taking more than 3 minutes to give the response, so, many requests are getting submitted each after 3 minutes. Can any one suggest me which setting/parameter of the load balancer cause this? And how to resolve this? We came to know that this is purely of load-balancing issue, as the same issue is not reproducible in normal environments (single server env)
Awaiting your immediate response,
Thanks in advance...
Gayathri.
Edited by: 900817 on Dec 29, 2011 9:34 PM

If I understand your scenario,
* a client at some other layer of your application submits an AJAX type request towards a service running on WebLogic 10.x
* that transaction IS expected to have a long execution time -- longer than 3 minutes
* your service on WebLogic is seeing the request submitted a second time (in error) after 3 minutes elapse while the prior thread is still running
It sounds like:
* the request was implemented as a synchronous call
* your AJAX framework is using a default TCP timeout of 180 seconds (3 minutes) -- pretty standard setting
* the client isn't seeing a response in 180 seconds and its TCP layer is assuming something errored out and is aborting the first TCP connection and resubmitting it.
Assuming the load balancer isn't implementing its own 180 second limit on connections without any traffic flowing, you may need to either
* find a way to tune your AJAX client to configure it to wait longer for responses
* alter the implementation of the service to be an asynchronous call so the AJAX client waits for a callback sent by your service when execution completes.
Hope that helps.

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    n;C:\PROGRA~1\Java\JDK17~1.0_1\bin;C:\app\paul.currie\product\11.2.0\client_2\bin;C:\app\paul.currie\product\11.2.0\dbhome_3\bin;C:\Program Files (x86)\PC Connectivity Solution\;C:\Wind
    ows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Java\jdk1.7.0_13\jre\bin;;C:\oracle\MIDDLE~2\WLSERV~1.3\server\native\win\x
    64\oci920_8;C:\oracle\MIDDLE~2\WLSERV~1.3\server\native\win\x64\oci920_8;C:\oracle\MIDDLE~2\WLSERV~1.3\server\native\win\x64\oci920_8"
    Your environment has been set.
    I am totally stuck at this point so any help would be much appreciated.
    Cheers
    Paul

    I have just tested both on a Windows and a Linux server and it works fine.
    D:\oracle\product\Middleware\wlserver_10.3\server\bin>setWLSEnv.cmd
    CLASSPATH=D:\oracle\product\MIDDLE~1\patch_wls1035\profiles\default\sys_manifest_classpath\weblogic_patch.jar;D:\oracle\
    product\MIDDLE~1\patch_jdev1111\profiles\default\sys_manifest_classpath\weblogic_patch.jar;D:\oracle\product\JAVA_C~1\li
    b\tools.jar;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\lib\weblogic_sp.jar;D:\oracle\product\MIDDLE~1\WLSERV~1.3\serve
    r\lib\weblogic.jar;D:\oracle\product\MIDDLE~1\modules\features\weblogic.server.modules_10.3.5.0.jar;D:\oracle\product\MI
    DDLE~1\WLSERV~1.3\server\lib\webservices.jar;D:\oracle\product\MIDDLE~1\modules\ORGAPA~1.1/lib/ant-all.jar;D:\oracle\pro
    duct\MIDDLE~1\modules\NETSFA~2.0_1/lib/ant-contrib.jar;D:\oracle\product\MIDDLE~1\patch_wls1035\profiles\default\sys_man
    ifest_classpath\weblogic_patch.jar;D:\oracle\product\MIDDLE~1\patch_jdev1111\profiles\default\sys_manifest_classpath\web
    logic_patch.jar;D:\oracle\product\JAVA_C~1\lib\tools.jar;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\lib\weblogic_sp.ja
    r;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\lib\weblogic.jar;D:\oracle\product\MIDDLE~1\modules\features\weblogic.ser
    ver.modules_10.3.5.0.jar;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\lib\webservices.jar;D:\oracle\product\MIDDLE~1\mod
    ules\ORGAPA~1.1/lib/ant-all.jar;D:\oracle\product\MIDDLE~1\modules\NETSFA~2.0_1/lib/ant-contrib.jar;
    PATH=D:\oracle\product\MIDDLE~1\patch_wls1035\profiles\default\native;D:\oracle\product\MIDDLE~1\patch_jdev1111\profiles
    \default\native;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\native\win\x64;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server
    \bin;D:\oracle\product\MIDDLE~1\modules\ORGAPA~1.1\bin;D:\oracle\product\JAVA_C~1\jre\bin;D:\oracle\product\JAVA_C~1\bin
    ;D:\oracle\product\MIDDLE~1\patch_wls1035\profiles\default\native;D:\oracle\product\MIDDLE~1\patch_jdev1111\profiles\def
    ault\native;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\native\win\x64;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\bin
    ;D:\oracle\product\MIDDLE~1\modules\ORGAPA~1.1\bin;D:\oracle\product\JAVA_C~1\jre\bin;D:\oracle\product\JAVA_C~1\bin;C:\
    Program Files\Legato\nsr\bin;C:\PROGRA~2\CA\SHARED~1\ETPKI\lib;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C
    :\Windows\System32\WindowsPowerShell\v1.0\;D:\oracle\Java\current\jre\bin;C:\PROGRA~2\CA\IDENTI~1\PROVIS~1\BIN;C:\Progra
    m Files (x86)\CA\SharedComponents\CAM\bin;D:\oracle\product\MIDDLE~1\WLSERV~1.3\server\native\win\x64\oci920_8;D:\oracle
    \product\MIDDLE~1\WLSERV~1.3\server\native\win\x64\oci920_8
    Your environment has been set.
    D:\oracle\product\Middleware\wlserver_10.3\server\bin>java weblogic.WLST
    Initializing WebLogic Scripting Tool (WLST) ...
    Welcome to WebLogic Server Administration Scripting Shell
    Type help() for help on available commands
    wls:/offline>

  • Oracle WebLogic Server - Oracle Spatial NDM-LOD Implementation

    Hi,
    I have a Network Data Model using Load on Demand approach implementation in Oracle WebLogic Server. Upon uploading of the java web service to my WebLogic Server, everything works fine and I can do network analysis functions using the LOD API.
    My problem is, whenever I add additional data to my Nodes and Links table, or I totally deleted all records in my Nodes and Links and repopulated the table with new data, I encounter the error Start node cannot be found.
    This are my sample screenshots for your reference.
    Initial Uploading of Java Web Service (Network Analysis Functions are working):
    http://sdrv.ms/1i3Gw6s
    After I Deleted all Nodes and Links data and repopulate new Network Data, I encounter Start node cannot be found:
    http://sdrv.ms/1i3FDuM
    But if you are going to look at my Node Table below, the node is existing in the database.
    http://sdrv.ms/1i3G8F4
    The only solution that I found to resolve this error is to update or redeploy the Java Web Service that have my Network Analysis functions. But this solution is basically not acceptable since my network data is constantly changing and more nodes and links are being added everyday.
    Does anyone have any Idea on how to resolve this without updating or redeploying my Java Web Service?

    Hi,
    I would like to follow-up with my inquiry above.

  • Oracle Siebel 8 adapter on Oracle WebLogic 10g

    Hi everybody,
    I need to install the new Oracle Service Bus 10g and to integrate with Siebel 8. So what I need is off course the bus and the adapter. I've a list of questions that raised during my initial research:
    1- Is it possible to install Oracle AS adapters on Oracle WebLogic 10g? I've tried to download the adapter and the only option was "adapters 101202" which require Oracle Home directory which is not available with Oracle WebLogic Installation.
    2- Is there a new version of Bea WebLogic adapters? The current documentation within edocs site support Siebel 7.7 and it is only available for WebLogic 9.1
    3- Where can I find installation guide for Oracle AS adapters?
    4- When navigating through http://www.oracle.com/technology/products/integration/adapters/index.html the "Download Oracle Integration Adapters" directed me to download Oracle WebLogic 10g r3 server. I went with the download and installed WebLogic 10g, but there were no adapters included. Is it only a mistaken link or it might contain the adapters for WebLogic 10g somewhere?
    Thanks in advance
    Tari

    Hi Brian,
    Generally the behavior you mentioned occurs when SRProc and SRBroker is unable to connect to Database.
    Please Check Following.
    1. Is Siebel Gateway Running Successfully? Please verify that Siebel Gateway listening on Standard port 2320. You can verify this by following command.
    netstat -na | grep 2320
    or
    ps -aef | grep siebns
    2. Change directory to <SIEBEL_ROOT>/siebsrvr/enterprises/<ENT_NAME>/<APP_SRVR>/log directory.
    3. Do you see any logs here? If yes, please let me know the errror message in logs.
    Hope this helps. All the best.

  • Configuring Apache HTTP Server with Oracle Weblogic Server plugin

    Hello friends,
    I have a scenario of OIM 9.1.0.2 on Oracle Application Server 11g and Weblogic Server Apache HTTP Server.
    Oracle WebLogic Server is configured in cluster (node1 and node2), also use the Oracle Weblogic Server plugin for integration with Apache.
    One of the tests is to lose one of the nodes for the apache plugin redirects the node that has less overhead.
    When the mode is node1 and node2 stop start mode and try to access the management console of Oracle Identity Manager, the plugin sometimes redirects to the other active node, and on another occasion shows the oracle management console identity manager without the colors of the basic look and feel.
    Deputy of the Apache HTTP Server log, do you expect your comments to solve this case?
    *************************************************log****************************************************
    Server Details are:
    OrigHostInfo [192.168.1.200]
    isOrigHostInfoDNS [0]
    Host [192.168.1.200]
    Port [7002]
    SecurePort [7004]
    Mon Jan 30 22:10:43 2012 <2600713279794431> Initializing lastIndex=0 for a list of length=1
    Mon Jan 30 22:10:43 2012 <2600713279794431> initJVMID: Trying to locate Primary or Secondary using SrvrInfo with JVMID [-872106207]
    Mon Jan 30 22:10:43 2012 <2600713279794431> initJVMID: Found Primary 192.168.1.200:7002:7004
    Mon Jan 30 22:10:43 2012 <2600713279794431> INFO: Closing SSL context
    Mon Jan 30 22:10:43 2012 <2600713279794431> .....internal request /bea_wls_internal/WLDummyInitJVMIDs.....processed
    Mon Jan 30 22:10:43 2012 <2600713279794431> getPreferredFromCookie: Found 1 servers
    Mon Jan 30 22:10:43 2012 <2600713279794431> attempt #0 out of a max of 5
    Mon Jan 30 22:10:43 2012 <2600713279794431> trying connect to PRIMARY '192.168.1.200'/7002/7004
    Mon Jan 30 22:10:43 2012 <2600713279794431> getPooledConn: No more connections in the pool for Host[192.168.1.200] Port[7002] SecurePort[7004]
    Mon Jan 30 22:10:43 2012 <2600713279794431> New SSL URL: match = 0 oid = 22
    Mon Jan 30 22:10:43 2012 <2600713279794431> Connect returns -1, and error no set to 150, msg 'Operation now in progress'
    Mon Jan 30 22:10:43 2012 <2600713279794431> EINPROGRESS in connect() - selecting
    Mon Jan 30 22:10:43 2012 <2600713279794431> Setting peerID for new SSL connection
    Mon Jan 30 22:10:43 2012 <2600713279794431> 0ae2 0436 0000 1b5c ...6...\
    Mon Jan 30 22:10:43 2012 <2600713279794431> Local Port of the socket is 39186
    Mon Jan 30 22:10:43 2012 <2600713279794431> Remote Host 192.168.1.200 Remote Port 7004
    Mon Jan 30 22:10:43 2012 <2600713279794431> created a new connection to preferred server '192.168.1.200/7004' for '/xlWebApp/images/spacer.gif', Local port:39186
    Mon Jan 30 22:10:43 2012 <2600713279794431> INFO: CA certificate missing basicConstraints, validation failed
    Mon Jan 30 22:10:43 2012 <2600713279794431> ERROR: SSLWrite failed
    Mon Jan 30 22:10:43 2012 <2600713279794431> SEND failed (ret=-1) at 793 of file ../nsapi/URL.cpp
    Mon Jan 30 22:10:43 2012 <2600713279794431> *******Exception type [WRITE_ERROR_TO_SERVER] raised at line 794 of ../nsapi/URL.cpp
    Mon Jan 30 22:10:43 2012 <2600713279794431> Marking 192.168.1.200:7004 as bad
    Mon Jan 30 22:10:43 2012 <2600713279794431> got exception in sendRequest phase: WRITE_ERROR_TO_SERVER [os error=0,  line 794 of ../nsapi/URL.cpp]: at line 3160
    Mon Jan 30 22:10:43 2012 <2600713279794431> INFO: Closing SSL context
    Mon Jan 30 22:10:43 2012 <2598413279794431>
    ================New Request: [GET /images/cab.gif HTTP/1.1] =================
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: SSL is configured
    Mon Jan 30 22:10:43 2012 <2598413279794431> SSL Main Context not set. Calling InitSSL
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: SSL configured successfully
    Mon Jan 30 22:10:43 2012 <2598413279794431> Using Uri /images/cab.gif
    Mon Jan 30 22:10:43 2012 <2598413279794431> After trimming path: '/images/cab.gif'
    Mon Jan 30 22:10:43 2012 <2598413279794431> adding prepend path: /xlWebApp/
    Mon Jan 30 22:10:43 2012 <2598413279794431> The final request string is '/xlWebApp/images/cab.gif'
    Mon Jan 30 22:10:43 2012 <2598413279794431> Host extracted from serverlist is [192.168.1.100]
    Mon Jan 30 22:10:43 2012 <2598413279794431> Host extracted from serverlist is [192.168.1.200]
    Mon Jan 30 22:10:43 2012 <2598413279794431> Initializing lastIndex=0 for a list of length=2
    Mon Jan 30 22:10:43 2012 <2598413279794431> getListNode: created a new server node: id='192.168.1.100:7004,192.168.1.200:7004' server_name='OIMSERVER', port='443'
    Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferred: availcookie=[JSESSIONID=6RGCPnbTFRG7LBrTRpFnv1QLnQHkxkqr4pjGhhGJyrJWJ1rv86NK!-872106207!NONE]
    Mon Jan 30 22:10:43 2012 <2598413279794431> Found cookie from cookie header: JSESSIONID=6RGCPnbTFRG7LBrTRpFnv1QLnQHkxkqr4pjGhhGJyrJWJ1rv86NK!-872106207!NONE
    Mon Jan 30 22:10:43 2012 <2598413279794431> Parsing cookie JSESSIONID=6RGCPnbTFRG7LBrTRpFnv1QLnQHkxkqr4pjGhhGJyrJWJ1rv86NK!-872106207!NONE
    Mon Jan 30 22:10:43 2012 <2598413279794431> getpreferredServersFromCookie: [-872106207!NONE]
    Mon Jan 30 22:10:43 2012 <2598413279794431> primaryJVMID: [-872106207]
    secondaryJVMID: [NONE]
    Mon Jan 30 22:10:43 2012 <2598413279794431> No of JVMIDs found in cookie: 1
    Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferredFromCookie: Start Position is 0, listLen is 2
    Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferredFromCookie: Either JVMIDs not set or they are stale. Will try to get JVMIDs from WLS
    Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Iterating SrvrList from position 0
    Mon Jan 30 22:10:43 2012 <2598413279794431> ======internal request /bea_wls_internal/WLDummyInitJVMIDs======
    initJVMID: Trying Host[192.168.1.100] Port[7004] SecurePort[7004] useSSL [1] ioTimeout [30] socketTimeout [2]
    Mon Jan 30 22:10:43 2012 <2598413279794431> New SSL URL: match = 0 oid = 0
    Mon Jan 30 22:10:43 2012 <2598413279794431> Connect returns -1, and error no set to 146, msg 'Connection refused'
    Mon Jan 30 22:10:43 2012 <2598413279794431> Error connecting to host 192.168.1.100:7004
    Mon Jan 30 22:10:43 2012 <2598413279794431> *******Exception type [CONNECTION_REFUSED] (Error connecting to host 192.168.1.100:7004 errno = 146) raised at line 1723 of ../nsapi/URL.cpp
    Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Failed to retrieved JVMID for 192.168.1.100:7004:7004
    Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Marked server as BAD
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Closing SSL context
    Mon Jan 30 22:10:43 2012 <2598413279794431> .....internal request /bea_wls_internal/WLDummyInitJVMIDs.....processed
    Mon Jan 30 22:10:43 2012 <2598413279794431> ======internal request /bea_wls_internal/WLDummyInitJVMIDs======
    initJVMID: Trying Host[192.168.1.200] Port[7004] SecurePort[7004] useSSL [1] ioTimeout [30] socketTimeout [2]
    Mon Jan 30 22:10:43 2012 <2598413279794431> New SSL URL: match = 0 oid = 0
    Mon Jan 30 22:10:43 2012 <2598413279794431> Connect returns -1, and error no set to 150, msg 'Operation now in progress'
    Mon Jan 30 22:10:43 2012 <2598413279794431> EINPROGRESS in connect() - selecting
    Mon Jan 30 22:10:43 2012 <2598413279794431> Setting peerID for new SSL connection
    Mon Jan 30 22:10:43 2012 <2598413279794431> 0ae2 0436 0000 1b5c ...6...\
    Mon Jan 30 22:10:43 2012 <2598413279794431> Local Port of the socket is 39188
    Mon Jan 30 22:10:43 2012 <2598413279794431> Remote Host 192.168.1.200 Remote Port 7004
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Certificate validation succeeded
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Negotiated to cipher: 3
    Mon Jan 30 22:10:43 2012 <2598413279794431> SSLWrite sent 171
    Mon Jan 30 22:10:43 2012 <2598413279794431> SSLWrite completed, sent 171
    Mon Jan 30 22:10:43 2012 <2598413279794431> Reader::fill() SSLRead returned: 0 290
    Mon Jan 30 22:10:43 2012 <2598413279794431> URL::parseHeaders: CompleteStatusLine set to [HTTP/1.1 404 Not Found]
    Mon Jan 30 22:10:43 2012 <2598413279794431> URL::parseHeaders: StatusLine set to [404 Not Found]
    Mon Jan 30 22:10:43 2012 <2598413279794431> parsed all headers OK
    Mon Jan 30 22:10:43 2012 <2598413279794431> Parsing cluster list: -872106207!182584374!7002!7004
    Mon Jan 30 22:10:43 2012 <2598413279794431> parseJVMID: Parsing JVMID '-872106207!182584374!7002!7004'
    Mon Jan 30 22:10:43 2012 <2598413279794431> parseJVMID: Actually parsing '-872106207!182584374!7002!7004'
    Mon Jan 30 22:10:43 2012 <2598413279794431> ServerInfo struct for JVMID '-872106207' populated
    Server Details are:
    OrigHostInfo [192.168.1.200]
    isOrigHostInfoDNS [0]
    Host [192.168.1.200]
    Port [7002]
    SecurePort [7004]
    Mon Jan 30 22:10:43 2012 <2598413279794431> Initializing lastIndex=0 for a list of length=1
    Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Trying to locate Primary or Secondary using SrvrInfo with JVMID [-872106207]
    Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Found Primary 192.168.1.200:7002:7004
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Closing SSL context
    Mon Jan 30 22:10:43 2012 <2598413279794431> .....internal request /bea_wls_internal/WLDummyInitJVMIDs.....processed
    Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferredFromCookie: Found 1 servers
    Mon Jan 30 22:10:43 2012 <2598413279794431> attempt #0 out of a max of 5
    Mon Jan 30 22:10:43 2012 <2598413279794431> trying connect to PRIMARY '192.168.1.200'/7002/7004
    Mon Jan 30 22:10:43 2012 <2598413279794431> getPooledConn: No more connections in the pool for Host[192.168.1.200] Port[7002] SecurePort[7004]
    Mon Jan 30 22:10:43 2012 <2598413279794431> New SSL URL: match = 0 oid = 22
    Mon Jan 30 22:10:43 2012 <2598413279794431> Connect returns -1, and error no set to 150, msg 'Operation now in progress'
    Mon Jan 30 22:10:43 2012 <2598413279794431> EINPROGRESS in connect() - selecting
    Mon Jan 30 22:10:43 2012 <2598413279794431> Setting peerID for new SSL connection
    Mon Jan 30 22:10:43 2012 <2598413279794431> 0ae2 0436 0000 1b5c ...6...\
    Mon Jan 30 22:10:43 2012 <2598413279794431> Local Port of the socket is 39189
    Mon Jan 30 22:10:43 2012 <2598413279794431> Remote Host 192.168.1.200 Remote Port 7004
    Mon Jan 30 22:10:43 2012 <2598413279794431> created a new connection to preferred server '192.168.1.200/7004' for '/xlWebApp/images/cab.gif', Local port:39189
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: CA certificate missing basicConstraints, validation failed
    Mon Jan 30 22:10:43 2012 <2598413279794431> ERROR: SSLWrite failed
    Mon Jan 30 22:10:43 2012 <2598413279794431> SEND failed (ret=-1) at 793 of file ../nsapi/URL.cpp
    Mon Jan 30 22:10:43 2012 <2598413279794431> *******Exception type [WRITE_ERROR_TO_SERVER] raised at line 794 of ../nsapi/URL.cpp
    Mon Jan 30 22:10:43 2012 <2598413279794431> Marking 192.168.1.200:7004 as bad
    Mon Jan 30 22:10:43 2012 <2598413279794431> got exception in sendRequest phase: WRITE_ERROR_TO_SERVER [os error=0,  line 794 of ../nsapi/URL.cpp]: at line 3160
    Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Closing SSL context
    Thanks

    "One of the tests is to lose one of the nodes for the apache plugin redirects the node that has less overhead."
    Note that the plug-in does a round robin load balancing, for example, in the case of three server (1,2,3) it does 1-2-3-1-2-3-1...
    with server 3 going down it does 1-2-1-2-1...
    An example configuration (with SSL off) looks as follows:
    LoadModule weblogic_module   "/home/oracle/weblogic12.1.1/apache/modules/mod_wl.so"
    <IfModule weblogic_module>
         ConnectTimeoutSecs 10
         ConnectRetrySecs 2
         DebugConfigInfo ON
         WLSocketTimeoutSecs 2
         WLIOTimeoutSecs 300
         Idempotent ON
         FileCaching ON
         KeepAliveSecs 20
         KeepAliveEnabled ON
         DynamicServerList ON
         WLProxySSL OFF
    </IfModule>
    <Location /LoadTest6>
         SetHandler weblogic-handler
         WebLogicCluster 172.31.0.175:7002,172.31.0.113:7003
    </Location>Also see the complete example here: http://middlewaremagic.com/weblogic/?p=7795
    "the plugin sometimes redirects to the other active node"
    This is somewhat strange, do you have session binding turned off?
    "and on another occasion shows the oracle management console identity manager without the colors of the basic look and feel."
    This could happen due to mime types (not really sure just a hunch). Here is a general story on this concept: https://developer.mozilla.org/en/Properly_Configuring_Server_MIME_Types
    and the apache module: http://httpd.apache.org/docs/2.2/mod/mod_mime.html

  • Class Loader Hierarchy in Weblogic 7.0

    I have read the BEA documentation on the class loader hierarchy in Weblogic Server,
    and I have some questions regarding some behavior I am seeing.
    I am running Weblogic Server 7.0.
    I have an ear file that contains 3 web apps (wars) and several utility jars. The
    web apps' manifests contain the Class-Path entry for the utility jars. My understanding
    of this is that each web app SHOULD have its own class loader. Also, the utility
    jars will be scoped in a separate class loader and WILL NOT have visibility to
    the web app classes. The web app classes should have visibility to the utility
    jars.
    Is this correct????
    I added a static segment of code in each web app and printed the class loader
    for each servlet when it was loaded. I also printed the class loader from a class
    that is DEFINITELY contained in one of the utility jars. Here is the result:
    Utility Class ClassLoader: sun.misc.Launcher$AppClassLoader@b9d04 Utility Class
    Parent ClassLoader: sun.misc.Launcher$ExtClassLoader@71732b
    Servlet 1 ClassLoader: sun.misc.Launcher$AppClassLoader@b9d04 Servlet 1 Parent
    ClassLoader: sun.misc.Launcher$ExtClassLoader@71732b
    Servlet 2 ClassLoader: sun.misc.Launcher$AppClassLoader@b9d04 Servlet 2 Parent
    ClassLoader: sun.misc.Launcher$ExtClassLoader@71732b
    I'm a little confused.... I expected to see 3 different class loaders (i.e. one
    for each class above). I believe the above printout says that all 3 classes are
    being loaded by the SAME class loader instance (Launcher$AppClassLoader@b9d04).
    Am I interpreting this correctly? If so, what's going on?

    I rechecked the classpath for the user that starts Weblogic, and in the classpath
    I found the project "src" directory (must have missed it earlier). When we did
    our build, the classes are placed in the src structure then copied to the build
    area. That's the reason I was not seeing the appropriate class loader hierarchy.
    Thanks for all of the comments.
    "Sanjeev Chopra" <[email protected]> wrote:
    >
    "Mark Cotherman" <[email protected]> wrote in message
    news:[email protected]...
    Thanks for your comments again Mark. I'm just trying to get a goodhandle
    on how
    this is working.
    I'll assume that somehow my web app classes are being loaded into theroot
    classloader.
    The next question is... why??Just to be sure - is there any way these classes are sneaking into the
    system classpath ?
    My ear file contains the following:
    a.war
    b.war
    c.war
    lib/util1.jar
    lib/util2.jar
    lib/util3.jar
    lib/util4.jar
    The manifest in all three wars reference all util jars. This ear deployssuccessfully
    on Weblogic with no errors.
    How could these separate servlets (one in each war) not have seperateclass loaders
    seperate from the root where the utils should reside. I don't thinkthat
    I have
    any control over where Weblogic loads the war classes, or do I?
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