linux下oracle监听

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=hdcssrv01)(PORT=1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=hdcssrv01)(PORT=1521)))
TNS-12542: TNS:address already in use
TNS-12560: TNS:protocol adapter error
  TNS-00512: Address already in use
   Linux Error: 98: Address already in useListener failed to start. See the error message(s) above...
求大神指点迷津  各种解决方式尝试了没用