java.lang.ClassCastException

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  • Relates to CSP-49854, and in this specific case the issue occurs with Oracle. This problem can affect other databases as well if there is an internal requirement in spring or hibernate to access the native Connection. The main reason this is required for Oracle is for hibernate to access to proprietary Oracle lob api's. From tomcat 6.0.27 the dbcp libraries have been upgraded from 1.2 to 1.3. Some of the internals of this library changed so that there's an additional layer of proxies on the Connection. In Tomcat the dbcp library is repackaged by tomcat into it's own package ({{org.apache.tomcat.dbcp.dbcp}}), this appears to have occurred since Tomcat 5.5. This means the {{CommonsDbcpNativeJdbcExtractor}} in the {{automaticJdbcExtractor}} bean defined in {{productionDatabaseContext.xml}} is not applied. By luck (presumably), the default {{NativeJdbcExtractor}} provided ({{org.springframework.jdbc.support.nativejdbc.SimpleNativeJdbcExtractor}}) is able to extract the Native connection from dbcp 1.2.x since. However, this no longer work when dbcp was upgraded to 1.3, hence exceptions similar to those shown below. The resolution is quite simple - add an additional dbcp mapping for the {{org.apache.tomcat.dbcp.dbcp}} package. ---- Example stacktrace. {noformat} java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.PoolableConnection cannot be cast to oracle.jdbc.OracleConnection at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:357) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.setClobAsCharacterStream(OracleLobHandler.java:311) at com.atlassian.hibernate.BucketClobStringType.nullSafeSet(BucketClobStringType.java:155) at net.sf.hibernate.type.CustomType.nullSafeSet(CustomType.java:118) at net.sf.hibernate.persister.EntityPersister.dehydrate(EntityPersister.java:387) at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:460) at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:436) at net.sf.hibernate.impl.ScheduledInsertion.execute(ScheduledInsertion.java:37) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2447) at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2433) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2390) at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2259) at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61) at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:510) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:139) at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129) at $Proxy183.doInTransaction(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:147) at $Proxy183.doInTransaction(Unknown Source) at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy286.execute(Unknown Source) at com.atlassian.gadgets.renderer.internal.BlobCrypterImpl.getKey(BlobCrypterImpl.java:38) at com.atlassian.gadgets.renderer.internal.BlobCrypterImpl.<init>(BlobCrypterImpl.java:32) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) ... 54 more Caused by: java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.PoolableConnection cannot be cast to oracle.jdbc.OracleConnection at oracle.sql.CLOB.createTemporary(CLOB.java:1093) at oracle.sql.CLOB.createTemporary(CLOB.java:1037) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.prepareLob(OracleLobHandler.java:393) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:340) ... 112 more {noformat}
    via by Craig Petchell,
  • Relates to CSP-49854, and in this specific case the issue occurs with Oracle. This problem can affect other databases as well if there is an internal requirement in spring or hibernate to access the native Connection. The main reason this is required for Oracle is for hibernate to access to proprietary Oracle lob api's. From tomcat 6.0.27 the dbcp libraries have been upgraded from 1.2 to 1.3. Some of the internals of this library changed so that there's an additional layer of proxies on the Connection. In Tomcat the dbcp library is repackaged by tomcat into it's own package ({{org.apache.tomcat.dbcp.dbcp}}), this appears to have occurred since Tomcat 5.5. This means the {{CommonsDbcpNativeJdbcExtractor}} in the {{automaticJdbcExtractor}} bean defined in {{productionDatabaseContext.xml}} is not applied. By luck (presumably), the default {{NativeJdbcExtractor}} provided ({{org.springframework.jdbc.support.nativejdbc.SimpleNativeJdbcExtractor}}) is able to extract the Native connection from dbcp 1.2.x since. However, this no longer work when dbcp was upgraded to 1.3, hence exceptions similar to those shown below. The resolution is quite simple - add an additional dbcp mapping for the {{org.apache.tomcat.dbcp.dbcp}} package. ---- Example stacktrace. {noformat} java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.PoolableConnection cannot be cast to oracle.jdbc.OracleConnection at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:357) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.setClobAsCharacterStream(OracleLobHandler.java:311) at com.atlassian.hibernate.BucketClobStringType.nullSafeSet(BucketClobStringType.java:155) at net.sf.hibernate.type.CustomType.nullSafeSet(CustomType.java:118) at net.sf.hibernate.persister.EntityPersister.dehydrate(EntityPersister.java:387) at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:460) at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:436) at net.sf.hibernate.impl.ScheduledInsertion.execute(ScheduledInsertion.java:37) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2447) at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2433) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2390) at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2259) at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61) at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:510) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:139) at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129) at $Proxy183.doInTransaction(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:147) at $Proxy183.doInTransaction(Unknown Source) at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy286.execute(Unknown Source) at com.atlassian.gadgets.renderer.internal.BlobCrypterImpl.getKey(BlobCrypterImpl.java:38) at com.atlassian.gadgets.renderer.internal.BlobCrypterImpl.<init>(BlobCrypterImpl.java:32) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) ... 54 more Caused by: java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.PoolableConnection cannot be cast to oracle.jdbc.OracleConnection at oracle.sql.CLOB.createTemporary(CLOB.java:1093) at oracle.sql.CLOB.createTemporary(CLOB.java:1037) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.prepareLob(OracleLobHandler.java:393) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:340) ... 112 more {noformat}
    via by Craig Petchell,
  • spring batch oracle CLOB issue
    via Stack Overflow by user509755
    ,
  • dbUnit / Bugs / #180 Inserting of clobs fails
    via by Unknown author,
    • java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.PoolableConnection cannot be cast to oracle.jdbc.OracleConnection at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:357) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.setClobAsCharacterStream(OracleLobHandler.java:311) at com.atlassian.hibernate.BucketClobStringType.nullSafeSet(BucketClobStringType.java:155) at net.sf.hibernate.type.CustomType.nullSafeSet(CustomType.java:118) at net.sf.hibernate.persister.EntityPersister.dehydrate(EntityPersister.java:387) at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:460) at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:436) at net.sf.hibernate.impl.ScheduledInsertion.execute(ScheduledInsertion.java:37) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2447) at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2433) at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2390) at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2259) at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61) at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:510) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:139) at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129) at $Proxy183.doInTransaction(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:147) at $Proxy183.doInTransaction(Unknown Source) at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy286.execute(Unknown Source) at com.atlassian.gadgets.renderer.internal.BlobCrypterImpl.getKey(BlobCrypterImpl.java:38) at com.atlassian.gadgets.renderer.internal.BlobCrypterImpl.<init>(BlobCrypterImpl.java:32) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) Caused by: java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.PoolableConnection cannot be cast to oracle.jdbc.OracleConnection at oracle.sql.CLOB.createTemporary(CLOB.java:1093) at oracle.sql.CLOB.createTemporary(CLOB.java:1037) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.prepareLob(OracleLobHandler.java:393) at org.springframework.jdbc.support.lob.OracleLobHandler$OracleLobCreator.createLob(OracleLobHandler.java:340) ... 59 more

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