hello sir,I am new to myeclipse nd using it's 8.5 version...i m working on web project,using tomcat server..ojdbc14.jar is attached in web-inf->lib->ojdbc14.rar..nd it's also included in referenced libraries...yesterday my project was running sucessfully...but today when i again start the server...it gives the following errors:

myeclipseTomcatServer [Remote Java Application] 
    org.apache.catalina.startup.Bootstrap at localhost:1530 
        Thread [main] (Suspended (exception SQLException))  
            DatabaseError.throwSqlException(String, String, int) line: 112 
            // clicking on it,a msg is coming "source attachment does not contain the source for databaseError.class.you can change the source attachment by clicking chnage source "

            T4CTTIoer.processError(boolean, OracleStatement) line: 331  
            T4CTTIoer.processError(OracleStatement) line: 288   
            T4C8Oall.receive() line: 743    
            T4CStatement.doOall8(boolean, boolean, boolean, boolean) line: 207  
            T4CStatement.executeForRows(boolean) line: 946  
            T4CStatement(OracleStatement).doExecuteWithTimeout() line: 1169 
            T4CStatement(OracleStatement).executeInternal(String) line: 1688    
            T4CStatement(OracleStatement).execute(String) line: 1654    
            DBInitializer.createTables(String) line: 26 
            CtxListener.contextInitialized(ServletContextEvent) line: 23    
            StandardContext.listenerStart() line: 3827  
            StandardContext.start() line: 4334  
            StandardHost(ContainerBase).addChildInternal(Container) line: 791   
            StandardHost(ContainerBase).addChild(Container) line: 771   
            StandardHost.addChild(Container) line: 525  
            HostConfig.deployDirectory(String, File, String) line: 920  
            HostConfig.deployDirectories(File, String[]) line: 883  
            HostConfig.deployApps() line: 492   
            HostConfig.start() line: 1138   
            HostConfig.lifecycleEvent(LifecycleEvent) line: 311 
            LifecycleSupport.fireLifecycleEvent(String, Object) line: 117   
            StandardHost(ContainerBase).start() line: 1053  
            StandardHost.start() line: 719  
            StandardEngine(ContainerBase).start() line: 1045    
            StandardEngine.start() line: 443    
            StandardService.start() line: 516   
            StandardServer.start() line: 710    
            Catalina.start() line: 566  
            NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]  
            NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39  
            DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25  
            Method.invoke(Object, Object...) line: 597  
            Bootstrap.start() line: 288 
            Bootstrap.main(String[]) line: 413  
    C:\Users\abc\AppData\Local\Genuitec\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin\javaw.exe (22-Apr-2012 10:32:42 AM)

At the same time with errors, when i run the same project then it gives following error...

SEVERE: Catalina.stop: 
java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:519)
    at java.net.Socket.connect(Socket.java:469)
    at java.net.Socket.<init>(Socket.java:366)
    at java.net.Socket.<init>(Socket.java:180)
    at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:409)
    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.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:337)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415)

i know i am asking a simple question...but as i am new to eclipse..m nt able to resolve it..so please help me as i have to submit my major project...thnx in advance...