ORA-28547 连接服务器失败，可能是Oracle Net 管理错误

原因：

The listener.ora file's SID_LIST section may INCORRECTLY contain a "PROGRAM" line and/or an "ENVS" line for all database instances.

PROGRAM和ENVS参数的设置会导致客户端通过SID_NAME来进行连接，由此会引发ORA-28547错误

解决方法：

打开【listener.ora】文件，去除PROGRAM和ENVS，重启监听或者重启Windows

[oracle@localhost ~]$ cat  /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = orcl)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
      (PROGRAM = extproc)  ##去掉此行
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.136.211)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
  )