Tomcat 7 fails to load ojdbc6.jar no matter where I have it specified

Question

This is one really trying my patience. I have a simple Spring 3.1 + Jersey application that I'm trying to work with ojdbc6.jar as my datasource. Unfortunately, no matter what I try, it can never find "oracle.jdbc.driver.OracleDriver" class.

I have turned on class loader tracing and I CAN SEE the ojdbc6.jar being loaded:

[Loaded oracle.jdbc.driver.OracleDriver from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.OracleDriver from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded java.sql.SQLException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.Wrapper from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.Connection from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded javax.management.InstanceAlreadyExistsException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded oracle.jdbc.driver.OracleDriverExtension from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded java.sql.DriverInfo from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded oracle.jdbc.driver.OracleDriver$1 from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.ClassRef from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.ClassRef$XMLTypeClassRef from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.DiagnosabilityMXBean from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.OracleDiagnosabilityMBean from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded javax.management.StandardMBean$MBeanInfoSafeAction from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded oracle.jdbc.driver.DatabaseError from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.OracleSQLException from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded java.lang.StringIndexOutOfBoundsException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded oracle.jdbc.driver.SQLStateMapping from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded java.sql.SQLNonTransientException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLTransientException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLDataException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLFeatureNotSupportedException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLIntegrityConstraintViolationException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLInvalidAuthorizationSpecException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLNonTransientConnectionException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLSyntaxErrorException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLTimeoutException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLTransactionRollbackException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLTransientConnectionException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLClientInfoException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded java.sql.SQLRecoverableException from /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar]
[Loaded oracle.jdbc.driver.SQLStateMapping$Tokenizer from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.Message from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.Message11 from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.internal.ObjectDataFactory from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.sql.ORADataFactory from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.sql.AnyDataFactory from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.internal.ObjectData from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.sql.ORAData from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.sql.TypeDescriptorFactory from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.OracleConnection from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.internal.OracleConnection from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.internal.ClientDataSupport from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.OracleConnectionWrapper from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.OracleConnection from file:/opt/tomcat7/lib/ojdbc6.jar]
[Loaded oracle.jdbc.driver.PhysicalConnection from file:/opt/tomcat7/lib/ojdbc6.jar]

But when I try my web service call, I get the following:

SEVERE: Servlet.service() for servlet [oraclepoc] in context with path [/oraclepoc] threw exception
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '"oracle.jdbc.driver.OracleDriver"/>'
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:573)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:637)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:666)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:674)
    at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:729)
    at com.company.sims.oraclepoc.dao.ProcessStatusDaoImpl.getStatusByProcessID(ProcessStatusDaoImpl.java:15)
    at com.company.sims.oraclepoc.resources.ProcessStatusRestController.getEMSStatusByProcessID_XML(ProcessStatusRestController.java:27)
    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.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
    at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
    at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:680)
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '"oracle.jdbc.driver.OracleDriver"/>'
    at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1429)
    at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
    at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
    at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
    ... 43 more
Caused by: java.lang.ClassNotFoundException: "oracle.jdbc.driver.OracleDriver"/>
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
    at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1420)
    ... 47 more
Jan 18, 2013 11:24:30 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [oraclepoc] in context with path [/oraclepoc] threw exception
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '"oracle.jdbc.driver.OracleDriver"/>'
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:573)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:637)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:666)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:674)
    at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:729)
    at com.company.sims.oraclepoc.dao.ProcessStatusDaoImpl.getStatusByProcessID(ProcessStatusDaoImpl.java:15)
    at com.company.sims.oraclepoc.resources.ProcessStatusRestController.getEMSStatusByProcessID_XML(ProcessStatusRestController.java:27)
    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.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
    at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
    at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:680)
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '"oracle.jdbc.driver.OracleDriver"/>'
    at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1429)
    at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
    at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
    at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
    ... 43 more
Caused by: java.lang.ClassNotFoundException: "oracle.jdbc.driver.OracleDriver"/>
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
    at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1420)
    ... 47 more

My application context XML file is the following:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
    <context:component-scan base-package="com.company.sims.oraclepoc"/>
    <context:annotation-config/>
    <bean id="propertyConfigurer" 
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location">
            <value>jdbc.properties</value>
        </property>
    </bean>
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
          destroy-method="close">
        <property name="driverClassName">
            <value>${jdbc.driver}</value>
        </property>
        <property name="url">
            <value>${jdbc.url}</value>
        </property>
        <property name="username">
            <value>${jdbc.user}</value>
        </property>
        <property name="password">
            <value>${jdbc.password}</value>
        </property>
    </bean>
    <bean id="processStatusDao" class="com.company.sims.oraclepoc.dao.ProcessStatusDaoImpl">
        <property name="dataSource" ref="dataSource" />
    </bean>  
</beans>

My jdbc.properties file:

jdbc.driver="oracle.jdbc.driver.OracleDriver"/>
jdbc.url="jdbc:oracle:thin:@10.10.10.10:1522:db"/>
jdbc.user="USER"/>
jdbc.password="password"/>

I've tried putting it in the WEB-INF/lib directory and in within Tomcat's LIB directory. Both attempts have been in failure.

Answer 1

Turns out that after a good night's rest and some time away led me to this link here in SO. Turns out my jdbc.properties file was badly constructed for my Oracle instance but right for my Sybase one. Thanks to all for your help. Down voting me for being absurd.

Answer 2

I believe its a class-loading issue. The things I can think of are:

• Two ojdbc.jars in accessible in your classpath, one in tomcat/lib, another in WEB-INF/lib
• Two ojdbc.jars in accessible in your classpath, one in JRE ext folder, another in WEB-INF/lib

or something like that.

Just be sure that there is just one JDBC driver in your classpath. You can remove the one in WEB-INF/lib to see whether your application works or not.

Answer 3

The oracle.jdbc.driver.OracleDriver class was deprecated for years and was removed from ojdbc6.jar in Oracle JDBC Drivers release 11.1.0.7.0.

You should use oracle.jdbc.OracleDriver instead.

Answer 4

Are you sure the .jar is in the correct place? For example, in this case, it needed to be located i nTomcat "common/lib", instead of "app/lib":

• http://forum.springsource.org/showthread.php?13965-oracle-JDBC-throws-error-while-initializing

Answer 5

I'm working with Jetbrains IntelliJ IDE. I selected Settings – Build, Execution, Deployment – Build Tools – Maven – Runner and selected a version higher than 1.6 of Java in JRE ComboBox. The error vanished.