eclispe下的配置文件
<DataSource>
<Name>Metadata</Name>
<DriverClassName>oracle.jdbc.driver.OracleDriver</DriverClassName>
<Username>envimonitor</Username>
<Password>envi123</Password>
<URL>jdbc:oracle:thin:@localhost:1521:XE</URL>
<MaxActive>50</MaxActive>
<InitialSize>2</InitialSize>
</DataSource>
toad下本地新建的配置文件XE = 
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = LOCALHOST)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = XE)
      (SRVR = DEDICATED)
    )
  )
报用户名和密码错误
Cannot create PoolableConnectionFactory (ORA-01017: invalid username/password; logon denied )