Erro ao executar uma Action

Bom dia Pessoal!

Estou com o seguinte problema, tenho um menu principal e ao clicar no item “Consulta” chamo uma action, porem ao tentar guardar meu list no request dá o seguinte erro, que eu não estou entendendo:
ACTION:

	public ActionForward unspecified(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		String idMenuPai = request.getParameter("menu");
		request.getSession().setAttribute("idMenuPai", idMenuPai);
		
		EmitirMinhasFrotasForm emitirMinhasFrotasForm = (EmitirMinhasFrotasForm) form;
		emitirMinhasFrotasForm.limparForm();
		
		ExternaFacade externalFacade = new ExternaFacade(getI18N(request));
		Pagina pagina = getPagina(request);
	
		Frotas frotas = new Frotas();	
		frotas.setUsuario(request.getSession().getAttribute(SCA_USUARIO));
				
		request.setAttribute(PAGINA, pagina);
		
                //Linha que ocorre o erro - externalFacade.listarFrotas(frotas, pagina)
                request.setAttribute("frotasList", externalFacade.listarFrotas(frotas, pagina));
		request.setAttribute(DECORADORES, getDecoradores(getI18N(request)));
		
		return mapping.findForward("listarFrotas");
	}

ERRO:

16/03/2011 10:35:19 org.apache.catalina.loader.WebappClassLoader findResourceInternal
GRAVE: Resource read error: Could not load oracle.jdbc.util.RepConversion.
java.util.zip.ZipException: invalid LOC header (bad signature)
	at java.util.zip.ZipFile.read(Native Method)
	at java.util.zip.ZipFile.access$1200(Unknown Source)
	at java.util.zip.ZipFile$ZipFileInputStream.read(Unknown Source)
	at java.util.zip.ZipFile$1.fill(Unknown Source)
	at java.util.zip.InflaterInputStream.read(Unknown Source)
	at org.apache.catalina.loader.WebappClassLoader.findResourceInternal(WebappClassLoader.java:2579)
	at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2266)
	at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:976)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1451)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
	at oracle.jdbc.driver.T4CTTIoauthenticate.marshalOauth(T4CTTIoauthenticate.java:338)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:312)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:371)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:148)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:572)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1007)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1783)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2" java.lang.NoClassDefFoundError: oracle/jdbc/util/RepConversion
	at oracle.jdbc.driver.T4CTTIoauthenticate.marshalOauth(T4CTTIoauthenticate.java:338)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:312)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:371)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:148)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:572)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1007)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1783)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)16/03/2011 10:35:19 org.apache.catalina.loader.WebappClassLoader findResourceInternal
GRAVE: Resource read error: Could not load oracle.jdbc.util.RepConversion.
java.util.zip.ZipException: invalid LOC header (bad signature)
	at java.util.zip.ZipFile.read(Native Method)
	at java.util.zip.ZipFile.access$1200(Unknown Source)
	at java.util.zip.ZipFile$ZipFileInputStream.read(Unknown Source)
	at java.util.zip.ZipFile$1.fill(Unknown Source)
	at java.util.zip.InflaterInputStream.read(Unknown Source)
	at org.apache.catalina.loader.WebappClassLoader.findResourceInternal(WebappClassLoader.java:2579)
	at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2266)
	at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:976)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1451)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
	at oracle.jdbc.driver.T4CTTIoauthenticate.marshalOauth(T4CTTIoauthenticate.java:338)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:312)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:371)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:148)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:572)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1007)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1783)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)

Caused by: java.lang.ClassNotFoundException: oracle.jdbc.util.RepConversion
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1484)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
	... 14 more
Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0" java.lang.NoClassDefFoundError: oracle/jdbc/util/RepConversion
	at oracle.jdbc.driver.T4CTTIoauthenticate.marshalOauth(T4CTTIoauthenticate.java:338)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:312)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:371)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:148)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:572)16/03/2011 10:35:19 org.apache.catalina.loader.WebappClassLoader findResourceInternal
GRAVE: Resource read error: Could not load oracle.jdbc.util.RepConversion.
java.util.zip.ZipException: invalid LOC header (bad signature)
	at java.util.zip.ZipFile.read(Native Method)
	at java.util.zip.ZipFile.access$1200(Unknown Source)
	at java.util.zip.ZipFile$ZipFileInputStream.read(Unknown Source)
	at java.util.zip.ZipFile$1.fill(Unknown Source)
	at java.util.zip.InflaterInputStream.read(Unknown Source)
	at org.apache.catalina.loader.WebappClassLoader.findResourceInternal(WebappClassLoader.java:2579)
	at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2266)
	at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:976)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1451)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
	at oracle.jdbc.driver.T4CTTIoauthenticate.marshalOauth(T4CTTIoauthenticate.java:338)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:312)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:371)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:148)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:572)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1007)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1783)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)

	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1007)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1783)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1" java.lang.NoClassDefFoundError: oracle/jdbc/util/RepConversion
	at oracle.jdbc.driver.T4CTTIoauthenticate.marshalOauth(T4CTTIoauthenticate.java:338)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:312)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:371)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:148)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:572)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1007)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1783)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)