Spring启动时出现 ERR=12505 异常

这是由于，spring配置文件中有数据源配置错误，修改后就可以正常启动

java.sql.SQLException: Io 异常: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=153
092352)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:333)
        at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:404)

        at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:468)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314)
        at java.sql.DriverManager.getConnection(DriverManager.java:512)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)