?
猜测是sid写错了，查询一下，果然：?
select INSTANCE_NAME from v$instance;把ngacct_s1改为ngacct1即可。
?
tomcat7连接oracle的Connectionrefused问题解决(三)
river.getConnectionInstance(OracleDriver.java:468)
oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314)
org.apache.tomcat.dbcp.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
org.apache.tomcat.dbcp.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582)
org.apache.tomcat.dbcp.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1556)
org.apache.tomcat.dbcp.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545)
... 49 more