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java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver	at org.eclipse.birt.core.framework.URLClassLoader.findClass1(URLClassLoader.java:188)	at org.eclipse.birt.core.framework.URLClassLoader$1.run(URLClassLoader.java:156)	at org.eclipse.birt.core.framework.URLClassLoader$1.run(URLClassLoader.java:1)	at java.security.AccessController.doPrivileged(Native Method)	at org.eclipse.birt.core.framework.URLClassLoader.findClass(URLClassLoader.java:151)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:348)	at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.loadExtraDriver(JDBCDriverManager.java:1064)	at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.findDriver(JDBCDriverManager.java:859)	at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.loadAndRegisterDriver(JDBCDriverManager.java:986)	at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.loadAndRegisterDriver(JDBCDriverManager.java:958)	at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.doConnect(JDBCDriverManager.java:285)	at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.getConnection(JDBCDriverManager.java:236)	at org.eclipse.birt.report.data.oda.jdbc.Connection.connectByUrl(Connection.java:254)	at org.eclipse.birt.report.data.oda.jdbc.Connection.open(Connection.java:163)	at org.eclipse.datatools.connectivity.oda.consumer.helper.OdaConnection.open(OdaConnection.java:250)	at org.eclipse.birt.data.engine.odaconsumer.ConnectionManager.openConnection(ConnectionManager.java:165)	at org.eclipse.birt.data.engine.executor.DataSource.newConnection(DataSource.java:224)	at org.eclipse.birt.data.engine.executor.DataSource.open(DataSource.java:212)	at org.eclipse.birt.data.engine.impl.DataSourceRuntime.openOdiDataSource(DataSourceRuntime.java:217)	at org.eclipse.birt.data.engine.impl.QueryExecutor.openDataSource(QueryExecutor.java:437)	at org.eclipse.birt.data.engine.impl.QueryExecutor.prepareExecution(QueryExecutor.java:325)	at org.eclipse.birt.data.engine.impl.PreparedQuery.doPrepare(PreparedQuery.java:463)	at org.eclipse.birt.data.engine.impl.PreparedDataSourceQuery.produceQueryResults(PreparedDataSourceQuery.java:190)	at org.eclipse.birt.data.engine.impl.PreparedDataSourceQuery.execute(PreparedDataSourceQuery.java:178)	at org.eclipse.birt.data.engine.impl.PreparedOdaDSQuery.execute(PreparedOdaDSQuery.java:179)	at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.execute(DataRequestSessionImpl.java:651)	at org.eclipse.birt.report.engine.data.dte.DteDataEngine.doExecuteQuery(DteDataEngine.java:152)	at org.eclipse.birt.report.engine.data.dte.AbstractDataEngine.execute(AbstractDataEngine.java:286)	at org.eclipse.birt.report.engine.executor.ExecutionContext.executeQuery(ExecutionContext.java:1947)	at org.eclipse.birt.report.engine.executor.QueryItemExecutor.executeQuery(QueryItemExecutor.java:80)	at org.eclipse.birt.report.engine.executor.TableItemExecutor.execute(TableItemExecutor.java:62)	at org.eclipse.birt.report.engine.internal.executor.dup.SuppressDuplicateItemExecutor.execute(SuppressDuplicateItemExecutor.java:43)	at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportItemExecutor.execute(WrappedReportItemExecutor.java:46)	at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportItemExecutor.execute(LocalizedReportItemExecutor.java:34)	at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:65)	at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:92)	at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:100)	at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doRun(RunAndRenderTask.java:181)	at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run(RunAndRenderTask.java:77)