LinkageError loader constraints

I am trying to use XPathAPI in my program and the server is generating an error of:
javax.faces.el.EvaluationException: java.lang.LinkageError: loader constraints violated when linking org/apache/xpath/objects/XObject class
Any help would be appreciated.
Thanks

Hi man,
good to hear that u have successfully deployed ur project on tomcat but i am having this error thrown while i am using tomcat 4.1. i m at loss as i have no idea why this error is arising. the jars that i m creating are placed under %TOMCAT_HOME%/common/lib and WEB-INF/lib directories. I am using Eclipse 2.1 and Struts framework. Any help to solve the following error would be a great help..I am badly stuck..
java.lang.LinkageError: Class com/patni/peass/bean/user/UserBean violates loader constraints
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:250)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:54)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:193)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
     at org.apache.catalina.loader.StandardClassLoader.findClass(StandardClassLoader.java:621)
     at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:958)
     at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:857)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
     at com.patni.peass.business.user.LoginBusiness.validateUserAndPassword(LoginBusiness.java:33)
     at com.patni.peass.action.user.LoginAction.execute(LoginAction.java:74)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1480)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:506)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:193)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:549)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:589)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:666)
     at java.lang.Thread.run(Thread.java:536)

Similar Messages

Error Message - java.lang.LinkageError: loader constraint violation

Hi
I get the following errormessage if I try to apply a more recent build of the JPA Toplink Essentials.
If I use the glassfish-persistence-installer-v2-b45.jar all things work fine, but if a try to upgrade my program will fail. I tried the glassfish-persistence-installer-v2-b54.jar, all also tried all builds between?!
I have no idea how I may resolve the problem?!
Any ideas?
Thanks
Marcel
(I am using Java 6, Netbeans 5.5)
Exception in thread "AWT-EventQueue-0" java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "DatenStruktur.ConditionBasic.getCouplingElement()LDatenStruktur/CouplingElement;" the class loader (instance of oracle/toplink/essentials/internal/ejb/cmp3/JavaSECMPInitializer$TempEntityLoader) of the current class, DatenStruktur/ConditionBasic, and the class loader (instance of sun/misc/Launcher$AppClassLoader) for interface DatenStruktur/Conditionable have different Class objects for the type DatenStruktur/CouplingElement used in the signature
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2291)
at java.lang.Class.getDeclaredFields(Class.java:1743)
at oracle.toplink.essentials.internal.security.PrivilegedAccessHelper.getDeclaredFields(PrivilegedAccessHelper.java:204)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.MetadataHelper.getFields(MetadataHelper.java:443)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.MetadataDescriptor.usesPropertyAccess(MetadataDescriptor.java:1081)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ClassAccessor.processAccessors(ClassAccessor.java:564)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ClassAccessor.process(ClassAccessor.java:498)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.MetadataAccessor.processAccessor(MetadataAccessor.java:514)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ClassAccessor.processTableAndInheritance(ClassAccessor.java:1388)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ClassAccessor.process(ClassAccessor.java:484)
at oracle.toplink.essentials.internal.ejb.cmp3.metadata.MetadataProcessor.processAnnotations(MetadataProcessor.java:240)
at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.processORMetadata(PersistenceUnitProcessor.java:370)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:600)
at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.callPredeploy(JavaSECMPInitializer.java:169)
at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initPersistenceUnits(JavaSECMPInitializer.java:237)
at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initialize(JavaSECMPInitializer.java:253)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:140)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java):96)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java):73)
at MainProgramManagement.ProgramMain.getEntityManagerFactory(ProgramMain.java:347)
at MainProgramManagement.ProgramMain.persistData(ProgramMain.java:788)

upgrade to cf8, which supports jdk 1.6.
mx7 does not support 1.5 or 1.6
Azadi Saryev
Sabai-dee.com
http://www.sabai-dee.com/

Java.lang.LinkageError: loader constraint violation

I am using ToplinkEssentials as a persistence provider in a J2SE desktop application. I've encountered the following error.
java.lang.LinkageError: loader constraint violation: loader (instance of sun/misc/Launcher$AppClassLoader) previously initiated loading for a different type with name "expendituretracking/Employee"
I have unsuccessfully searched for a clue as to what is causing this problem. Any help is appreciated.

Hello,
Could this be related to the bug described at:
https://glassfish.dev.java.net/issues/show_bug.cgi?id=2625
If you have an interface involved, try adding them to the persistence.xml's list of classes.
Best Regards,
Chris

Java.lang.LinkageError:loader constraints

Hi,
          I am having problem with on of my ejb having some
          classes sharing with my servlet. The following is the
          exception which I get. I guess this is due to different
          classloader trying to load the sharing class. I have
          my app dur struct. in exploded format under WEB-INF\classes
          My ejbs do not contain the common classes. WEB-INF\classes
          is in weblogic classpath.
          <Servlet failed with Exception
          java.lang.LinkageError: Class com/pmi/enterprise/securityauthority/Roles
          violates loader constraints
          at java.lang.ClassLoader.defineClass0(Native Method)
          at java.lang.ClassLoader.defineClass0(Compiled Code)
          at java.lang.ClassLoader.defineClass(Compiled Code)
          at java.lang.ClassLoader.defineClass(Compiled Code)
          at
          weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Compiled Code)
          at
          weblogic.utils.classloaders.GenericClassLoader.reallyLoadClass(Compiled
          Code)
          at
          weblogic.utils.classloaders.RecursiveReloadOnModifyClassLoader$Slave.loadCla
          ss(Compiled Code)
          at weblogic.utils.classloaders.GenericClassLoader.loadClass(Compiled
          Code)
          at java.lang.ClassLoader.loadClassInternal(Compiled Code)
          at
          com.pmi.webedi.servlets.RequestServlet.doPost(RequestServlet.java:215)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:772)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
          at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          :105)
          at
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
          l.java:742)
          at
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
          l.java:686)
          at
          weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContext
          Manager.java:247)
          at
          weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:361)
          at
          weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:261)
          at weblogic.kernel.ExecuteThread.run(Compiled Code)
          I donot have anything under WEB-INF\lib. If I include the EJB Jars then I
          get ClassCastException.
          Can anyone help me with this. This is working application on Win2000 and I
          am moving to sun
          and restructuring accor. to servlet spec2.2.
          Thanks in advance,
          - Rishi Prakash


I tried recompiling all the related classes and rebuilt my ejb. But it
          didn't help. I tried a couple of more things.
          I moved one of the common class from my classpath
          to the ejb jar. This in effect eliminated the from this class
          and showed the same error on another common class. Then I moved both the
          classes to the ejb jar. Now I got
          NoclassDef FoundError from the servlet. I also tried including at both
          places (ie in jar as well as Classpath). Again it did not help. I have no
          clue now what to do.
          Any more help or clue is appriciated.
          - Rishi Prakash
          "Mark Spotswood" <[email protected]> wrote in message
          news:[email protected]...
          > The error means that a class which
          com/pmi/enterprise/securityauthority/Roles
          > depends on has changed in a way that is incompatible with the current
          version
          > of Roles. This could happen if the JDK being used is different than the
          JDK
          > that Roles was originally compiled against, or if you have rebuilt some
          class
          > that Roles uses, but have not also rebuilt Roles.
          > --
          > mark
          >
          > Rishi Prakash wrote:
          >
          > > Hi,
          > >
          > > I am having problem with on of my ejb having some
          > > classes sharing with my servlet. The following is the
          > > exception which I get. I guess this is due to different
          > > classloader trying to load the sharing class. I have
          > > my app dur struct. in exploded format under WEB-INF\classes
          > > My ejbs do not contain the common classes. WEB-INF\classes
          > > is in weblogic classpath.
          > >
          > > <Servlet failed with Exception
          > > java.lang.LinkageError: Class com/pmi/enterprise/securityauthority/Roles
          > > violates loader constraints
          > > at java.lang.ClassLoader.defineClass0(Native Method)
          > > at java.lang.ClassLoader.defineClass0(Compiled Code)
          > > at java.lang.ClassLoader.defineClass(Compiled Code)
          > > at java.lang.ClassLoader.defineClass(Compiled Code)
          > > at
          > > weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Compiled
          Code)
          > > at
          > > weblogic.utils.classloaders.GenericClassLoader.reallyLoadClass(Compiled
          > > Code)
          > > at
          > >
          weblogic.utils.classloaders.RecursiveReloadOnModifyClassLoader$Slave.loadCla
          > > ss(Compiled Code)
          > > at
          weblogic.utils.classloaders.GenericClassLoader.loadClass(Compiled
          > > Code)
          > > at java.lang.ClassLoader.loadClassInternal(Compiled Code)
          > > at
          > > com.pmi.webedi.servlets.RequestServlet.doPost(RequestServlet.java:215)
          > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:772)
          > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
          > > at
          > >
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          > > :105)
          > > at
          > >
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
          > > l.java:742)
          > > at
          > >
          weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
          > > l.java:686)
          > > at
          > >
          weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContext
          > > Manager.java:247)
          > > at
          > >
          weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:361)
          > > at
          > > weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:261)
          > > at weblogic.kernel.ExecuteThread.run(Compiled Code)
          > >
          > > I donot have anything under WEB-INF\lib. If I include the EJB Jars then
          I
          > > get ClassCastException.
          > > Can anyone help me with this. This is working application on Win2000 and
          I
          > > am moving to sun
          > > and restructuring accor. to servlet spec2.2.
          > >
          > > Thanks in advance,
          > > - Rishi Prakash
          >

Loader constraints (oracle/sql/converter/CharacterConverters)

I'm trying to get OC4J standalone to work with instant client of JDBC in order to use OCI. I can run the java code stand-alone on the Oracle home I've installed the OC4J in, but when I try to run the application through OC4J I get the following error - indicating a setup problem?
java.lang.LinkageError: Class oracle/sql/converter/CharacterConverters violates loader constraints
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].util.OC4JSecureClassLoader.defineClassEntry(OC4JSecureClassLoader.java:172)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].naming.ContextClassLoader.defineClass(ContextClassLoader.java:1179)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].naming.ContextClassLoader.defineClass(ContextClassLoader.java:1065)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].naming.ContextClassLoader.findClass(ContextClassLoader.java:404)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].naming.ContextClassLoader.loadLocalClassFirst(ContextClassLoader.java:158)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].naming.ContextClassLoader.loadClass(ContextClassLoader.java:137)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
     at oracle.sql.CharacterSet1Byte.getInstance(CharacterSet1Byte.java:79)
     at oracle.sql.CharacterSetWithConverter.getInstance(CharacterSetWithConverter.java:91)
     at oracle.sql.CharacterSetFactoryThin.make(CharacterSetFactoryThin.java:104)
     at oracle.sql.CharacterSet.make(CharacterSet.java:430)
     at oracle.jdbc.driver.DBConversion.<init>(DBConversion.java:126)
     at oracle.jdbc.driver.T2CConnection.logon(T2CConnection.java:356)
     at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:348)
     at oracle.jdbc.driver.T2CConnection.<init>(T2CConnection.java:139)
     at oracle.jdbc.driver.T2CDriverExtension.getConnection(T2CDriverExtension.java:79)
     at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:563)
     at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:196)
     at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:146)
     at tsa.common.tsaDB.newConnection(tsaDB.java:30)
I've searched but really found nothing indicating problems with this class. Is this an NLS problem?

Well - I don't have to look for that setting - I know it's set to excatly that - because I did that ;)
I cannot use the JDBC built into OC4J. First, it's using CLASSES12DMS - secondly I use XDB. Even if it was using OJDBC14 it most likely would not be "binary compatible" with the XDB from the 10g RDBMS. I've had this problem on the AS 10g of OC4J and I did try it on this one too. XDB crashes out with basically the same error -just different library.
My issue is integration into OC4J. This application works outside OC4J (the method that fails work). By simply setting CLASSPATH to the OJDBC14 from the instant client, LD_LIBRARY_PATH to the *.so files from the same instant client, plus XDB from the 10g home, and XMLPARSEV2 - the connection succeeds and data is retreived etc.
NOW - the exact error here I think I identified. OC4J loads ORAI18N - an older version (at least different from) compared to the one that comes with instant client. I put the instant client's ORAI18N in the "pre-path" load (that setting you refer to) and I'm now at a different loader constraint for sql/oracle/OPAQUE. Trying to identify which library, if any, that OC4J is providing which shouldn't be there.
I've read the note that explains how to install a different version of JDBC with OC4J. Problem is, that instant client doesn't come with CLASSES12DMS - and secondly I've tried to replace the DMS version with a link to OJDBC14 and it staill failed.
In a way this particular thread got resolved last night - but I still have the same basicly problem. Getting a different JDCB version using OCI to work from within OC4J 10.1.x.

OBE-15409: Error in loading constraint information

Hi,
I'm having a problem with the Query Builder in Reports Builder. When selecting a table with any type of constraints I get the following type of error message (Emp in user scott/tiger):
OBE-15409: Error in loading constraint information for EMPNO (PK_EMP)
OBE-15409: Error in loading constraint information for DEPTNO (FK_DEPTNO)
The table is shown in the query builder and I can create the select but for instance if I select two tables with a foreign key constraint between them, the foreign key is not shown in the query builder. I have to manually create the join between the tables.
The error seems to correspond to an upgrade of the database. I get the error with a database upgraded to either 9.2.0.3.0 or 9.2.0.4.0. But on a database upgraded to 9.2.0.2.1 I don't get the error. I have tried with both the original 9i Developer Suite and an upgraded version with Patchset 2 (9.0.2.2.0).
The same error appears on 3 different setups. 2 local installations of database and developer suite and 1 client/server setup. Everything running Windows 2000 SP 3.
Any suggestions?
Regards
Bent

Thanks for the reply and the bug number so I can follow the progress. I had done a general search here at Technet and at Metalink and didn't find anything. I didn't think of searching directly in the bug database.

TPVS - Minimum resource load constraint

Hi Friends,
We are in APO 4.1 version and TPVS optimizer is being used to consolidate/schedule shipments . We have two kind of vehicle resources assigned to Transportation lane via MOT. They are Vehicle type -A with maximum capacity 10 Tons and Vehicle type-B with 30 Tons maximum capacity . Our business expects whenever sum of fright units weight comes less than or equal to 10 Tons on given route/Zone customers , then optimizer should load those shipmetss only into Vehicle type-A or Vehicle type -B should get loaded only when total shipment weight exceeds 10 Tons . I am aware optimizer works purely based total cost optimisation by meeting all constraints defined.
My question : Is there any possibility to define minimum weight constraint for vehicle in TPVS or any options. (Have explored compatibility some extend, but it couldnu2019t help me)
Thanks
Rajesh K

Hi Rajesh,
The requirement is to load 10 tns on MOT A and above 10 tns on MOT B.
There is something in cost profile called "Cost functions and Load cost" tab.
Define Load cost like the below:
10 MOT-A 0 to 10 Tons less cost
> 10 Tns very high cost
20 MOT-B 0 to 10 Tons Very high cost
> 10 tns less cost
As it is cost based optimization, Optimizer always selects less cost solution.
Hope ur requirement will be met addressed.
Thanks & Regards,
Jagadeesh

Class Equality In Checking Loader Constraint

Hi,
Class loaders are suppose to throw constraint violation (Linkage Error) if a class with the same name is loaded by two separate class loaders if the class being loaded are not the same class. How is this equality of classes checked for? Does it have to come from the same location (jar file) or does it merely have to be the 'same'. If it is the latter, how is the equality determined.
We have run into a strange situation where org.w3c.dom classes are loaded from jre 1.4 runtime (rt.jar) by the web server but then these classes also exist in our web applications WEB-INF/lib and get loaded by web application context classloader. We have tried a couple of versions of jars that contain the org.w3c.dom classes in the WEB-INF/lib directory and one of them causes a constraint violation while the other one does not. When we looked specifically at the class (Node.class) that is causing the constriant violation, the strange thing is that the version which causes the constraint violation contains the same stuff (same after decompilation) as the one in rt.jar while the one which didn't cause constraint violation actually had more methods. We are pretty confused as to how the loader is checking the constraint. Can some one shed some light on what is happening?
Regards,
Len Takeuchi

Hi,
Class loaders are suppose to throw constraint
violation (Linkage Error) if a class with the same
name is loaded by two separate class loaders if the
class being loaded are not the same class. Huh?
What does "same name" mean. The fully qualified name? It certainly has nothing to do with the name of the class itself.
And what do you mean by "are not the same class"? That is definitely not the case if the functionality is different. Hotloading works and it would be pointless if the functionality and even the interface couldn't change.
>
We have run into a strange situation where
org.w3c.dom classes are loaded from jre 1.4 runtime
(rt.jar) by the web server but then these classes
also exist in our web applications WEB-INF/lib and
get loaded by web application context classloader.It sounds to me like you have a class loaded by the system class loader and one loaded by a custom class loader.
That has nothing to do with the problem above though.
The ideal solution is for you to not do that. Other than that I believe (but I could be wrong) that you can implement a custom class loader which does NOT try to resolve to the parent. This means that you must write it yourself. The url one in the java API will not work.
We have tried a couple of versions of jars that
t contain the org.w3c.dom classes in the WEB-INF/lib
directory and one of them causes a constraint
violation while the other one does not. When we
looked specifically at the class (Node.class) that is
causing the constriant violation, the strange thing
is that the version which causes the constraint
violation contains the same stuff (same after
decompilation) as the one in rt.jar while the one
which didn't cause constraint violation actually had
more methods. We are pretty confused as to how the
loader is checking the constraint. Can some one shed
some light on what is happening?
It isn't calling the class that you think it is.
If you search this site there are examples of code that allows you to determine exactly where a class is loaded from.

SQL Loader Constraints with Column Objects and Nested Tables

I am working on loading a Table that (god forbid) contains columns, column objects, and nested tables (which contains several depth of column objects). My question is does SQL Loader have a hidding undocumented feature where it states how the column objects must be grouped in refereneced to the nested tables within the loader file? I can load the various column objects, and nested tables fine right now, however, I am loading them all in strange and insane order. Can anyone answer this question? Thanks.
Peter

I just noticed that my email is wrong. If you can help, plese send email to [email protected]
thanks.

LinkageError on integratedWLS with prefer-web-inf-classes

Hello.
I'm currently messing with some reporting tool (BIRT) for weblogic. There's a web application example which should be deployed on application server for demonstration.
I have no problems deploying it on standalone WebLogic on linux server (jrockit), but I can't run it on my local integratedWLS (hotspot) - there is LinkageError.
Stalking through Interment, I found out that this thing has an issue with WebLogic. The application uses a lot of libraries and some of them are included in WebLogic but with lower versions, so there is jar collisions.
To solve this issue there is weblogic.xml with:
<container-descriptor>
<prefer-web-inf-classes>true</prefer-web-inf-classes>
</container-descriptor>
As I said, with this file I can deploy the application on standalone WLS and it works normally but deploying on integratedWLS fails with LinkageError.
If I remove weblogic.xml, deployment doesn't fail, but the application throws exceptions on runtime because of wrong jar versions (that is understandable).
Why can't I run the application on integratedWLS with prefer-web-inf-classes?
Thanks.
JDev 11.1.2.3, WLS 10.3.5
LinkageError:
[05:51:50 PM] Redeploying Application...
<21.10.2013 17:51:52 GST> <Warning> <HTTP> <BEA-101162> <User defined listener org.eclipse.birt.report.listener.ViewerServletContextListener failed: java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.apache.xerces.dom.ElementImpl.getSchemaTypeInfo()Lorg/w3c/dom/TypeInfo;" the class loader (instance of weblogic/utils/classloaders/ChangeAwareClassLoader) of the current class, org/apache/xerces/dom/ElementImpl, and the class loader (instance of <bootloader>) for interface org/w3c/dom/Element have different Class objects for the type org/w3c/dom/TypeInfo used in the signature.
java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.apache.xerces.dom.ElementImpl.getSchemaTypeInfo()Lorg/w3c/dom/TypeInfo;" the class loader (instance of weblogic/utils/classloaders/ChangeAwareClassLoader) of the current class, org/apache/xerces/dom/ElementImpl, and the class loader (instance of <bootloader>) for interface org/w3c/dom/Element have different Class objects for the type org/w3c/dom/TypeInfo used in the signature
at org.apache.xerces.dom.DeferredDocumentImpl.getNodeObject(Unknown Source)
at org.apache.xerces.dom.DeferredDocumentImpl.synchronizeChildren(Unknown Source)
at org.apache.xerces.dom.CoreDocumentImpl.getDocumentElement(Unknown Source)
at org.eclipse.birt.core.framework.jar.BundleLoader.loadExtensions(BundleLoader.java:151)
at org.eclipse.birt.core.framework.jar.BundleLoader.load(BundleLoader.java:63)
Truncated. see log file for complete stacktrace
>
<21.10.2013 17:51:52 GST> <Error> <Deployer> <BEA-149265> <Failure occurred in the execution of deployment request with ID '1382363510965' for task '7'. Error is: 'weblogic.application.ModuleException: '
weblogic.application.ModuleException:
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1510)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:482)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
Truncated. see log file for complete stacktrace
Caused By: java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.apache.xerces.dom.ElementImpl.getSchemaTypeInfo()Lorg/w3c/dom/TypeInfo;" the class loader (instance of weblogic/utils/classloaders/ChangeAwareClassLoader) of the current class, org/apache/xerces/dom/ElementImpl, and the class loader (instance of <bootloader>) for interface org/w3c/dom/Element have different Class objects for the type org/w3c/dom/TypeInfo used in the signature
at org.apache.xerces.dom.DeferredDocumentImpl.getNodeObject(Unknown Source)
at org.apache.xerces.dom.DeferredDocumentImpl.synchronizeChildren(Unknown Source)
at org.apache.xerces.dom.CoreDocumentImpl.getDocumentElement(Unknown Source)
at org.eclipse.birt.core.framework.jar.BundleLoader.loadExtensions(BundleLoader.java:151)
at org.eclipse.birt.core.framework.jar.BundleLoader.load(BundleLoader.java:63)
Truncated. see log file for complete stacktrace
>
<21.10.2013 17:51:52 GST> <Error> <Deployer> <BEA-149202> <Encountered an exception while attempting to commit the 9 task for the application 'WebViewerWeblogic'.>
<21.10.2013 17:51:52 GST> <Warning> <Deployer> <BEA-149004> <Failures were detected while initiating deploy task for application 'WebViewerWeblogic'.>
<21.10.2013 17:51:52 GST> <Warning> <Deployer> <BEA-149078> <Stack trace for message 149004
weblogic.application.ModuleException:
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1510)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:482)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
Truncated. see log file for complete stacktrace
Caused By: java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.apache.xerces.dom.ElementImpl.getSchemaTypeInfo()Lorg/w3c/dom/TypeInfo;" the class loader (instance of weblogic/utils/classloaders/ChangeAwareClassLoader) of the current class, org/apache/xerces/dom/ElementImpl, and the class loader (instance of <bootloader>) for interface org/w3c/dom/Element have different Class objects for the type org/w3c/dom/TypeInfo used in the signature
at org.apache.xerces.dom.DeferredDocumentImpl.getNodeObject(Unknown Source)
at org.apache.xerces.dom.DeferredDocumentImpl.synchronizeChildren(Unknown Source)
at org.apache.xerces.dom.CoreDocumentImpl.getDocumentElement(Unknown Source)
at org.eclipse.birt.core.framework.jar.BundleLoader.loadExtensions(BundleLoader.java:151)
at org.eclipse.birt.core.framework.jar.BundleLoader.load(BundleLoader.java:63)
Truncated. see log file for complete stacktrace
>
[05:51:52 PM] Deployment cancelled.
[05:51:52 PM] ---- Deployment incomplete ----.
[05:51:52 PM] Remote deployment failed (oracle.jdevimpl.deploy.common.Jsr88RemoteDeployer)
#### Cannot run application WebViewerWeblogic due to error deploying to IntegratedWebLogicServer.

User defined listener org.eclipse.birt.report.listener.ViewerServletContextListener failed: java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.apache.xerces.dom.ElementImpl.getSchemaTypeInfo()Lorg/w3c/dom/TypeInfo
Bug
User defined listener org.eclipse.birt.report.listener.ViewerServletContextListener failed: java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.apache.xerces.dom.ElementImpl.getSchemaType
Info()Lorg/w3c/dom/TypeInfo
https://bugs.eclipse.org/bugs/show_bug.cgi?id=383926

Java.lang.LinkageError while deploying.

Hello All,
I am working on an application which runs on jboss and while deploying I come accross the below error.
09:55:37,607 ERROR [[ehaweb]] Servlet.service() for servlet ehaweb threw exception
java.lang.LinkageError: loader constraint violation: when resolving interface method "com.eha.service.PageAccessMangementLoca
l.savePageAccessLog(Lcom/eha/domain/PageAccessLog;)V" the class loader (instance of org/jboss/web/tomcat/service/WebAppClassL
oader) of the current class, com/eha/web/filter/PageAccessLogFilter, and the class loader (instance of org/jboss/mx/loading/U
nifiedClassLoader3) for resolved class, com/eha/service/PageAccessMangementLocal, have different Class objects for the type c
om/eha/domain/PageAccessLog used in the signature
Please let me know if something else is needed.
I am deploying an ear file which also has a war file and all required libs and jars in it.
Thanks in advance.

First of all thanks for the reply,
Your reply resolved my issue but now I am facing different error at deployment as given below.
15:55:05,833 ERROR [ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchService' defined in ServletCont
ext resource [WEB-INF/applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.
PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.TypeMismatchException: Failed to convert property value of type [com.ope
nsymphony.oscache.general.GeneralCacheAdministrator] to required type [com.opensymphony.oscache.general.GeneralCacheAdministr
ator] for property 'generalCacheAdministrator'; nested exception is java.lang.IllegalArgumentException: No matching editors o
r conversion strategy found
Caused by:
org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessException details (1) are:
PropertyAccessException 1:
org.springframework.beans.TypeMismatchException: Failed to convert property value of type [com.opensymphony.oscache.general.G
eneralCacheAdministrator] to required type [com.opensymphony.oscache.general.GeneralCacheAdministrator] for property 'general
CacheAdministrator'; nested exception is java.lang.IllegalArgumentException: No matching editors or conversion strategy found
Caused by:
**java.lang.IllegalArgumentException: No matching editors or conversion strategy found**
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:212)
My EAR structure is like this,
EAR
-meta inf
-jar's
-war
- web inf
- classes
- lib
The classes in war's "classses" directory needed to access some classes in jar's of ear's root directory.
since I had first bundled these jars again in lib directory of war's web inf, I deployed it sucessfully but at run time
It gave me previous errors that was solved by first reply (due to duplicate jars), now since I have deleted those
duplicate jars, It gives me above error.
Please help, I have stuck here for a long time now.

Java.lang.LinkageError in weblogic 10.3

i had deployed the jasperserver.war in weblogic 10.3 server...
i am getting the following exception...
Context Initialization failed
org.springframework.beans.factory.BeanDefinationStroreException:unexpected exception parsing xml document from ServletCotext resource[WEB-INF/applicationContext.xml]nested exception is java.lang.LinkageError:loader constraint voilation when resolving the method javax.xml.parser.DocumentBuilder.setEntityResolver(Lorg/xml/sax/EntityResolver:)V"the class loader intance of weblogic/utils/classloaders/ChangeAwareClassLoader) of the current class,og/springframework/factory/xm/DefaultDocumentLoader and the classloader<instance of <bootloader>) for resolved classes javax/xml/parsers/DocumentBuiler have different class objects for the type org/xml/sax/EntityResolver used in the signature
please help me out ...
thanks in advance
venkat seerla

I think there is conflict with a class in the system classloader an one into jasperserver.war. Maybe It is due to a diferent implementation of Spring framework of WebLogic and jasper reports. Check if jasper spring version matches weblogic spring version.
To understand classloading visit http://download.oracle.com/docs/cd/E17904_01/web.1111/e13706/classloading.htm

WebLogic Server 8.1 and Axis 1.2: LinkageError qname?

I am trying to run Axis 1.2 inside WebLogic. It runs fine on JBoss, but I am getting strange errors in WebLogic 8.1 SP6.
Happyaxis validation seems to be ok, but as soon as a WSDL needs to be generated I get the following exception: weblogic LinkageError loader constraints violated when linking javax.xml.namespace.QName
I made sure that all the libraries are there and these are loaded from the lib folder of the WAR. One library in specific, qname.jar (that is related to the exception), was additionaly mentioned in the classpath before all other libraries but the exception still occurred.
Is this problem familiar to someone?

I too have had problems using WebLogic Builder to add the WebLogic Deployment Descriptors.
I some places there are typos, others lack of Resource Reference Envionment tabs under Resources.
Other times I have generated and saved the deployment descriptors, only to have them recreated the next time I go into WebLogic Builder again.
Using the "Refresh Module" removes many of the CMP Fields and Primary Key fields in Persistence for some reason.
Basically, WebLogic Builder is very unfriendly in porting jAppServer2004.

Load linkage error - "com/crystaldecisions/sdk/occa/report/data/Fields"

We had installed and were using Crystal Reports for Eclpse with JBoss 4.2. We recently upgraded to JBoss 5.1 Our crystal reports do not work from the web interface anymore. The error we get is:
Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/web/tomcat/service/WebCtxLoader$ENCLoader) previously initiated loading for a different type with name "com/crystaldecisions/sdk/occa/report/data/Fields"
It looks like there might be a class conflict with JBoss jars? Any ideas on which jars to look at would be really appreciated. Any other ideas or suggestions on what this error might be?
Thank you.

Based on the supported platforms document, I don't believe that JBoss 5.1 is on the list of application servers that are supported by Crystal Reports For Eclipse Version 2. I believe that the versions of JBoss that are supported are 4.2 and 5. By not supported, it means that SAP BusinessObjects hasn't tested and certified against these versions.
As for the error, I'm not sure which jar file would be causing the conflict.
Regards.
- Robert

Java.lang.LinkageError Help

Hi All,
I am deploying a WAR file to Weblogic (latest version 10.3). Since I need to force Weblogic to use the libraries in the WAR file, I set prefer-web-inf-classes to true:
<container-descriptor>
<prefer-web-inf-classes>true</prefer-web-inf-classes>
</container-descriptor>
into weblogic.xml,
but after that my application failed to load/start. Here is what I got from screen:
java.lang.LinkageError: loader constraint violation: loader (instance of weblogic/utils/classloaders/ChangeAwareClassLoader) previously initiated loading for a different type with name "org/xml/sax/XMLReader"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:344)
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:301)
Does that mean some libraries loaded multiple times? How do I fix this? Thanks!
cheney

If you are putting part of your application in the shared library then please make sure that it should not import any of the classes which are there in other 2 war or jar files which are loaded separately.
So organize your classes in that way.

LinkageError loader constraints

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