ORA-01017: invalid username/password; logon denied解决方法

ORA-01017: invalid username/password; logon denied
tomcat在启动的最后就会报这个错误，搞了半天解决不了，用户名和密码都是对的
求大神指点
我的项目数据库原来是oracle10g的，导出方案后现在又导入到oracle11g，用户也是新建的，并赋予connect和resource权限，是权限的问题嘛

java.sql.SQLException: ORA-01017: invalid username/password; logon denied

	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:330)
	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:282)
	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:277)
	at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth(T4CTTIoauthenticate.java:790)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:361)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:438)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:164)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:752)
	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:1014)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
DEBUG 2012-09-29 11:58:21,101 com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask: An exception occurred while acquiring a poolable resource. Will retry.

上面是完整的错误信息
我的用户名和密码是对的

#**********db set***************#
driverClassName=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@localhost:1521:myora
username=kael	
password=kael
minPoolSize=5
maxPoolSize=50
maxIdleTime=1800
acquireIncrement=3
maxStatements=1000
initialPoolSize=5
idleConnectionTestPeriod=60
acquireRetryAttempts=30
testConnectionOnCheckout=false
breakAfterAcquireFailure=false
acquireRetryDelay=100

<context:property-placeholder location="classpath:db.properties,classpath:constant.properties" ignore-unresolvable="true"/>

		<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
		destroy-method="close">
		<property name="driverClass">
		<value>${driverClassName}</value>
		</property>
		<property name="jdbcUrl">
		<value>${url}</value>
		</property>
		<property name="user">
		<value>${username}</value>
		</property>
		<property name="password">
		<value>${password}</value>
		</property>
		<!--连接池中保留的最小连接数。 -->
		<property name="minPoolSize">
		<value>${minPoolSize}</value>
		</property>
		<!--连接池中保留的最大连接数。Default: 15 -->
		<property name="maxPoolSize"  >
		<value>${maxPoolSize}</value>
		</property>
		<!--最大空闲时间,若为0则永不丢弃。Default: 0 -->
		<property name="maxIdleTime">
		<value>${maxIdleTime}</value>
		</property>
		<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
		<property name="acquireIncrement">
		<value>${acquireIncrement}</value>
		</property>
		<property name="maxStatements">
		<value>${maxStatements}</value>
		</property>
		<property name="initialPoolSize">
		<value>${initialPoolSize}</value>
		</property>
		<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
		<property name="idleConnectionTestPeriod">
		<value>${idleConnectionTestPeriod}</value>
		</property>
		<!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
		<property name="acquireRetryAttempts">
		<value>${acquireRetryAttempts}</value>
		</property>
		<property name="breakAfterAcquireFailure" >
		<value>${breakAfterAcquireFailure}</value>
		</property>
		<property name="testConnectionOnCheckout">
		<value>${testConnectionOnCheckout}</value>
		</property>
		<property name="acquireRetryDelay">
   	 	<value>${acquireRetryDelay}</value>
		</property>
	</bean>

这是spring配置

------解决方案--------------------
username=kael    后面有空格看到没有？
------解决方案--------------------
先尝试用sqlplus或其它啥工具，用相同的帐号密码，远程登录数据库试试看。