I deploy an ear application in ocj4 server.
When i try to access the application, the exception is occured :
500 Internal Server Error
Servlet error: An exception occurred. The current application deployment descriptors do not allow for including it in this response. Please consult the application log for details.
I open the application.log :
12/12/11 13:47:54.76 ViewArchive: Servlet error
java.lang.NoClassDefFoundError: oracle/adf/share/jndi/MDSBackingStore
at oracle.jbo.client.Configuration.loadFromClassPath(Configuration.java:446)
at oracle.jbo.common.ampool.PoolMgr.loadConfiguration(PoolMgr.java:600)
at oracle.jbo.common.ampool.PoolMgr.findPool(PoolMgr.java:526)
at oracle.jbo.client.Configuration.createRootApplicationModule(Configuration.java:1513)
at oracle.jbo.client.Configuration.createRootApplicationModule(Configuration.java:1490)
at LoginModule.view.utils.LoginValidateDB.checkUserExist(LoginValidateDB.java:24)
at LoginModule.view.utils.LoginValidateServlet.doPost(LoginValidateServlet.java:44)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:734)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:391)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:908)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:458)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:226)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:127)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:116)
at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:234)
at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:29)
at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:879)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
at java.lang.Thread.run(Thread.java:722)
Caused by: oracle.classloader.util.AnnotatedClassNotFoundException:
Missing class: oracle.adf.share.jndi.MDSBackingStore
Dependent class: oracle.jbo.client.Configuration
Loader: JAS.web.ViewArchive:0.0.0
Code-Source: /C:/Users/iswanto/Desktop/oc4j_extended_101350/j2ee/home/applications/JAS/ViewArchive/WEB-INF/lib/adfm.jar
I try to search JAR files that contain MDSBackingStore but not found.
The question is : how can i get that jar ?
Thanks.
Related
Tomcat is not up for Oracle Apex because it's pointing to a wrong path which does not exist. Is there a way to fix this? below is the error message.
INFO [main] . No pools configured yet
SEVERE [main] oracle.dbtools.common.logging.LegacyLoggingAdaptor.severe Error writing to:
D:\oracle\product\old_ords\defaults.xml, D:\oracle\product\old_ords\defaults.xml (The system cannot find the path specified)
When i create kafka jdbc source connector(debezium connector for oracle with confluent-5.4.0),get errors "No suitable driver found for jdbc:oracle:oci...".
[2020-03-23 11:49:44,521] ERROR WorkerSourceTask{id=debezium-souce-inventory-0} Task threw an uncaught and unrecoverable exception (org.apache.kafka.connect.runtime.WorkerTask:179)
org.apache.kafka.connect.errors.ConnectException: An exception ocurred in the change event producer. This connector will be stopped.
at io.debezium.connector.base.ChangeEventQueue.throwProducerFailureIfPresent(ChangeEventQueue.java:170)
at io.debezium.connector.base.ChangeEventQueue.poll(ChangeEventQueue.java:151)
at io.debezium.connector.oracle.OracleConnectorTask.poll(OracleConnectorTask.java:110)
at org.apache.kafka.connect.runtime.WorkerSourceTask.poll(WorkerSourceTask.java:265)
at org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:232)
at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:177)
at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:227)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.RuntimeException: java.sql.SQLException: No suitable driver found for jdbc:oracle:oci:#test:1521/testdb
at io.debezium.relational.RelationalSnapshotChangeEventSource.execute(RelationalSnapshotChangeEventSource.java:179)
at io.debezium.pipeline.ChangeEventSourceCoordinator.lambda$start$0(ChangeEventSourceCoordinator.java:83)
... 5 more
Caused by: java.sql.SQLException: No suitable driver found for jdbc:oracle:oci:#test:1521/testdb
at java.sql.DriverManager.getConnection(DriverManager.java:689)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at io.debezium.connector.oracle.OracleConnectionFactory.connect(OracleConnectionFactory.java:25)
at io.debezium.jdbc.JdbcConnection.connection(JdbcConnection.java:756)
at io.debezium.jdbc.JdbcConnection.connection(JdbcConnection.java:751)
at io.debezium.relational.RelationalSnapshotChangeEventSource.execute(RelationalSnapshotChangeEventSource.java:119)
... 6 more
[2020-03-23 11:49:44,521] ERROR WorkerSourceTask{id=debezium-souce-inventory-0} Task is being killed and will not recover until manually restarted (org.apache.kafka.connect.runtime.WorkerTask:180)
My oracle version is Enterprise Edition Release 11.2.0.4.0 - 64bit Production,i have tried different driver jar but getting the same exception.
My jdk version is:
[root#vtsz-big-dwh02 /]# echo $JAVA_HOME
/usr/java/jdk1.8.0_191
I have add debezium-connector-oracle to the folder confluent-5.4.0/share/java.
As the Debezium docs say, i install instant client and copy the files _ojbc8.jar and xtreams.jar from the Instant Client into Kafka's libs
directiry
(confluent-5.4.0/share/java/kafka , confluent-5.4.0/share/java/kafka-connect-jdbc ,/opt/confluent-5.4.0/lib,/usr/share/java`).
[root#vtsz-big-dwh02 java]# echo $LD_LIBRARY_PATH
/home/app/instantclient_11_2/:
My source connectors configuration is :
{
"name": "debezium-souce-idea-inventory",
"config": {
"connector.class": "io.debezium.connector.oracle.OracleConnector",
"tasks.max": "1",
"database.server.name":"testdb",
"database.out.server.name":"testdb",
"database.hostname": "10.0.10.169",
"database.port": "1521",
"database.user": "mytest",
"database.password": "mytest",
"database.dbname" : "testdb",
"table.whitelist": "ideas.WMS_INVENTORY",
"database.history.kafka.bootstrap.servers":"localhost:9092",
"database.history.kafka.topic":"schema-changes.inventory"
}
}
You need to put the JAR files on which the connector (Debezium, in this case) depends in the same folder (or subfolder) as the connector plugin.
So instead of putting them in
confluent-5.4.0/share/java/kafka
/opt/confluent-5.4.0/lib
/usr/share/java
confluent-5.4.0/share/java/kafka-connect-jdbc
put them in
confluent-5.4.0/share/java/debezium-connector-oracle
(or wherever the actual Debezium JAR plugin resides)
I wanted to deploy a simple jsp application: I created and copied the myApp.war file to the $JBOSS_HOME/standalone/deployment folder.
Instead of deploying the war file , JBoss created *.war.failed ,
So I thought maybe it's a good idea to restart the jboss to see if it affects the deployment.
In some forums it was suggested to restart the JBoss through : $JBOSS_HOME/bin/jboss-cli.sh
But there was no shutdown or restart command.
While I was trying to restart , I ran the following command :
/usr/local/jboss7/bin/jboss-cli.sh -c ":shutdown(restart=true)"
JBoss stopped working , but it didn't start again.
Now , I want to start it again by :
$JBOSS_HOME/bin/standalone.sh
But it gives me the following exception :
=========================================================================
JBoss Bootstrap Environment
JBOSS_HOME: /usr/local/jboss7
JAVA: /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/bin/java
JAVA_OPTS: -server -XX:+UseCompressedOops -XX:+TieredCompilation -Xms64m -Xmx512m -XX:MaxPermSize=256m -Djava.net.preferIPv4Stack=true -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Djboss.modules.system.pkgs=org.jboss.byteman -Djava.awt.headless=true -Djboss.server.default.config=standalone.xml
=========================================================================
17:29:43,399 INFO [org.jboss.modules] JBoss Modules version 1.1.1.GA
17:29:43,536 INFO [org.jboss.msc] JBoss MSC version 1.0.2.GA
17:29:43,567 INFO [org.jboss.as] JBAS015899: JBoss AS 7.1.1.Final "Brontes" starting
17:29:43,876 ERROR [org.jboss.as.server] JBAS015956: Caught exception during boot: org.jboss.as.controller.persistence.ConfigurationPersistenceException: JBAS014676: Failed to parse configuration
at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:141) [jboss-as-controller-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.server.ServerService.boot(ServerService.java:266) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:155) [jboss-as-controller-7.1.1.Final.jar:7.1.1.Final]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_71]
Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character '*' (code 42) (expected a name start character)
at [row,col {unknown-source}]: [190,160]
at com.ctc.wstx.sr.StreamScanner.throwUnexpectedChar(StreamScanner.java:639)
at com.ctc.wstx.sr.StreamScanner.parseLocalName(StreamScanner.java:1798)
at com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2975)
at com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2926)
at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2802)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1050)
at com.ctc.wstx.sr.BasicStreamReader.nextTag(BasicStreamReader.java:1125)
at org.jboss.staxmapper.XMLExtendedStreamReaderImpl.nextTag(XMLExtendedStreamReaderImpl.java:152) [staxmapper-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.as.server.deployment.scanner.DeploymentScannerParser_1_1.readElement(DeploymentScannerParser_1_1.java:85)
at org.jboss.as.server.deployment.scanner.DeploymentScannerParser_1_1.readElement(DeploymentScannerParser_1_1.java:28)
at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:110) [staxmapper-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.staxmapper.XMLExtendedStreamReaderImpl.handleAny(XMLExtendedStreamReaderImpl.java:69) [staxmapper-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.as.server.parsing.StandaloneXml.parseServerProfile(StandaloneXml.java:894) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.server.parsing.StandaloneXml.readServerElement_1_1(StandaloneXml.java:330) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:127) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:100) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:110) [staxmapper-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.staxmapper.XMLMapperImpl.parseDocument(XMLMapperImpl.java:69) [staxmapper-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:133) [jboss-as-controller-7.1.1.Final.jar:7.1.1.Final]
... 3 more
17:29:43,882 FATAL [org.jboss.as.server] JBAS015957: Server boot has failed in an unrecoverable manner; exiting. See previous messages for details.
17:29:43,889 INFO [org.jboss.as] JBAS015950: JBoss AS 7.1.1.Final "Brontes" stopped in 4ms
I searched for the cause of the problem , and I found that probably there's a problem with standalone.xml file.
In /usr/local/jboss7/standalone/configuration/standalone_xml_history I have the following files , but not the standalone.xml
2014xxxx-xxxxxxxx
snapshot
standalone.initial.xml
current
standalone.boot.xml
standalone.last.xml
I'd like to know if I have to rename any of these files to standalone.xml ? (actually I tried renaming standalone.boot.xml to standalone.xml but it didn't work either !) or download a new one ? may I remove these xml files after having the new standalone.xml ?
If JBoss-7 is installed in $JBOSSHOME, the default standalone configuration file is $JBOSS_HOME/standalone/configuration/standalone.xml; $JBOSSHOME/standalone/configuration is the default value of the jboss.server.config.dir property; and running $JBOSSHOME/bin/standalone.sh with no options will start JBoss in standalone mode on Linux/Unix systems.
In order to use a different standalone configuration file it can be renamed to standalone.xml, put in jboss.server.config.dir if it is not already there and standalone.sh run with no options; or its file name can be given to standalone.sh as an argument to its -c option after it is put in jboss.server.config.dir, for example:
$JBoss_home/bin/standalone.sh -c standalone-full.xml
RedHat documentation for this is at https://docs.jboss.org/author/display/AS71/Command+line+parameters
I have had the best success with standalone/configuration/standalone-full.xml since it has the full configuration. It is shipped with JBoss-7. If you don't have it you could download a fresh copy of the distro to get it. What I always do is archive a zip of the distro for recovery in case something gets corrupted or lost in the working copy.
I get the following exception when deploying a JSR 286 portlet into Oracle WebLogic Server 11g (to deploy it later in Oracle WebCenter 11g):
<19-ene-2010 13H32' CET> <Error> <oracle.portlet.server.containerimpl.PortletApplicationImpl> <BEA-000000> <Error al procesar el archivo "/WEB-INF/portlet.xml" en la lÝnea 6 columna 68.
org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'portlet-app'
The error message is in spanish. It means:
"Error processing the file "/WEB-INF/portlet.xml at line 6 column 68"
The portlet.xml of my portlet seems to be correct and I've deployed it in other portal servers. So I don't understand the error message.
This is the portlet.xml of my portlet (eclipse XML validator said it was a valid XML)
<?xml version="1.0" encoding="UTF-8"?>
<portlet-app version="2.0"
xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd
http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
xmlns:dnd="http://www.denodo.com/widget/portlet/portletjsr286">
<portlet>
<description>Test Inter Portlet Communication (JSR286)</description>
<portlet-name>Test IPC</portlet-name>
<display-name>Test IPC</display-name>
<portlet-class>com.denodo.ipc.TestIPCPortlet</portlet-class>
<supports>
<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>
</supports>
<supported-locale>en</supported-locale>
<resource-bundle>PortletMessages</resource-bundle>
<portlet-info>
<title>Test IPC</title>
<short-title>Test IPC</short-title>
<keywords>Test IPC,Denodo</keywords>
</portlet-info>
</portlet>
</portlet-app>
How do I deploy my portlet
I convert my portlet into to a WSRP portlet by executing
java -jar wsrp-predeploy.jar source EAR target EAR
as explained in http://download.oracle.com/docs/cd/E12839_01/webcenter.1111/e12405/wcadm_portlet_prod.htm#CHDECJHI)
I try to deploy it into WebLogic with the WebLogic Console and I get this exception.
My Environment
WebCenter Suite (11.1.1.2.0) + WebLogic Server (10.3.2) downloaded from the oracle.com. Default configuration
S.O: Windows XP SP3
Thanks in advance for your time.
Have you tried using the openPortal portlet-container? The doc says it will install onto weblogic: https://portlet-container.dev.java.net/public/Download.html
Update: I just installed the portlet-container into the weblogic container and successfully deployed one of the sample portlets from this page: \http://portlet-container.dev.java.net/public/Samples.html
I am running JDeveloper 10.1.3.4 with the webcenter pre-configured oc4j.
I'm trying to portletize a vanilla JSF webcenter project.
I create a application using the webcenter application template.
Add a JSF JSP, simple called it index with all the default values.
Add a deployment profile and deploy to local oc4j
navigate to the jsf page and everything works.
right click on ViewController and add the library Portlet Faces Bridge
right click on ViewController and add a Portlet Deployment descriptor.
Edit portlet.xml with the values from link text
in portlet.xml i replace the Default page view with my /index.jspx
when i try to deploy to local oc4j i get the follow
---- Deployment started. ---- May 1, 2009 2:29:37 PM Target platform is
Standalone OC4J 10g 10.1.3
(localAppServer). Wrote WAR file to
C:\jdevstudio10134\jdev\mywork\test\ViewController\deploy\webapp2.war
Wrote EAR file to
C:\jdevstudio10134\jdev\mywork\test\ViewController\deploy\webapp2.ear
Backing up generic archive file
:/C:/jdevstudio10134/jdev/mywork/test/ViewController/deploy/webapp2_generic.ear
Creating WSDLs for the WSRP
Application WSDLs for the WSRP
Application have been created
Uploading file webapp2.ear ...
Uploading file webapp2.ear ...
Application Deployer for webapp2
STARTS. Copy the archive to
C:\jdevstudio10134\j2ee\home\applications\webapp2.ear
Initialize
C:\jdevstudio10134\j2ee\home\applications\webapp2.ear
begins... Unpacking webapp2.ear Done
unpacking webapp2.ear Unpacking
webapp2.war Done unpacking webapp2.war
Initialize
C:\jdevstudio10134\j2ee\home\applications\webapp2.ear
ends... Starting application : webapp2
Initializing ClassLoader(s)
application : webapp2 is in failed
state Operation failed with error:
java.lang.NullPointerException
Deployment failed Elapsed time for
deployment: 3 seconds
Deployment incomplete. #### May 1, 2009 2:29:40 PM
if i deploy the WAR file by hand and navigate to the page i get 500 internal server error.
09/05/01 14:49:21.984 webapp2: Servlet
error java.lang.NullPointerException
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152)
at oracle.portlet.server.bridges.jsf.PortletViewHandlerImpl.renderView(PortletViewHandlerImpl.java:73)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:268)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher
.java:713)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher
.java:370)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler
.java:871)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].server.http.HttpRequestHandler.processRequest(HttpRequestHandler
.java:453)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler
.java:221)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0)
].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor
.java:303)
at java.lang.Thread.run(Thread.java:595)
My portlet.xml file looks like
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<portlet-app version="1.0" xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd">
<portlet>
<description>myapp</description>
<portlet-name>test</portlet-name>
<display-name>myapp</display-name>
<portlet-class>oracle.portlet.server.bridges.jsf.FacesPortlet
</portlet-class>
<init-param>
<name>DefaultPage.view</name>
<value>/index.jspx</value>
</init-param>
<init-param>
<name>BridgeLifecycleListeners</name>
<value>
oracle.portlet.server.bridges.jsf.adf.ADFFacesBridgeLifecycleListener,
oracle.portlet.server.bridges.jsf.adf.BindingFacesBridgeLifecycleListener
</value>
</init-param>
<supports>
<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>
</supports>
<supported-locale>en</supported-locale>
<portlet-info>
<title>myapp</title>
<short-title>test</short-title>
</portlet-info>
</portlet>
</portlet-app>
...if i delete the file and redeploy the jspx page works fine.
you should move to jdev 11g which uses wls which is much better than oc4j