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POduplicate class definition error with derby / openjdk-6
 

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  1. POduplicate class definition error with derby / openjdk-6
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    <p>Im getting the following exception when attempting to connect to a derby server via openjpa: <code>attempted duplicate class definition for name: "sun/security/pkcs11/SunPKCS11"</code>. Looking through some google results it looks like theres a known problem with java on mac, but im using ubuntu, and openjdk-6. Im really not sure where to start solving this. Anyone any ideas whats going wrong?</p> <p><code>java -version</code> output:</p> <pre><code>java version "1.6.0_24" OpenJDK Runtime Environment (IcedTea6 1.11.1) (6b24-1.11.1-4ubuntu3) OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode) </code></pre> <p>Error stack trace (lengthy...)</p> <pre><code>Exception in thread "main" &lt;openjpa-2.2.0-r422266:1244990 nonfatal general error&gt; org.apache.openjpa.persistence.PersistenceException: There were errors initializing your configuration: java.lang.LinkageError: loader (instance of sun/misc/Launcher$ExtClassLoader): attempted duplicate class definition for name: "sun/security/pkcs11/SunPKCS11" at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:634) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:277) at java.net.URLClassLoader.access$000(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:212) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at java.lang.ClassLoader.loadClass(ClassLoader.java:314) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) at sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:253) at sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:244) at java.security.AccessController.doPrivileged(Native Method) at sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:244) at sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:224) at sun.security.jca.ProviderList.loadAll(ProviderList.java:281) at sun.security.jca.ProviderList.removeInvalid(ProviderList.java:298) at sun.security.jca.Providers.getFullProviderList(Providers.java:170) at java.security.Security.getProviders(Security.java:457) at java.security.Security.getProviders(Security.java:607) at java.security.Security.getProviders(Security.java:552) at org.apache.derby.client.am.EncryptionManager.&lt;init&gt;(Unknown Source) at org.apache.derby.jdbc.ClientBaseDataSource.&lt;clinit&gt;(Unknown Source) at org.apache.derby.jdbc.ClientDriver.tokenizeURLProperties(Unknown Source) at org.apache.derby.jdbc.ClientDriver.connect(Unknown Source) at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38) at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582) at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1556) at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545) at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1388) at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044) at org.apache.openjpa.jdbc.schema.DBCPDriverDataSource.getDBCPConnection(DBCPDriverDataSource.java:74) at org.apache.openjpa.jdbc.schema.AutoDriverDataSource.getConnection(AutoDriverDataSource.java:42) at org.apache.openjpa.jdbc.schema.SimpleDriverDataSource.getConnection(SimpleDriverDataSource.java:75) at org.apache.openjpa.lib.jdbc.DelegatingDataSource.getConnection(DelegatingDataSource.java:118) at org.apache.openjpa.lib.jdbc.DecoratingDataSource.getConnection(DecoratingDataSource.java:93) at org.apache.openjpa.jdbc.schema.DataSourceFactory.installDBDictionary(DataSourceFactory.java:233) at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getConnectionFactory(JDBCConfigurationImpl.java:733) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.openjpa.lib.conf.ConfigurationImpl.instantiateAll(ConfigurationImpl.java:295) at org.apache.openjpa.conf.OpenJPAConfigurationImpl.instantiateAll(OpenJPAConfigurationImpl.java:1671) at org.apache.openjpa.kernel.AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:646) at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:203) at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:156) at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:227) at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:154) at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:60) at org.dynamosoftware.jpatest.App.main(App.java:15) </code></pre>
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    1. PTQuestion
    1. USrichzilla
    1. USrichzilla
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    1. COIs the exception happening in your application? Or in the Derby server? This sounds like a classpath problem, possibly aggravated by the fact that JDK 1.6 tries to auto-load JDBC drivers in automatic ways. Possibly using -verbose:class will give you more clues.
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      1. POduplicate class definition error with derby / openjdk-6
      1. USBryan Pendleton
    2. CONope, its from my app, i can start the derby server no problem, its when i attempt to connect through openjpa that i run into problems. The method thats actually falling over is a derby method however (edited question with stack trace)
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      1. POduplicate class definition error with derby / openjdk-6
      1. USrichzilla
    3. COWhat happens if, using the same CLASSPATH that you use to run your application, you run some very simple code like: http://theblasfrompas.blogspot.com/2009/02/determine-th-security-providers-for-jvm.html
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      1. POduplicate class definition error with derby / openjdk-6
      1. USBryan Pendleton
 

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