ORA-12528: TNS: 监听程序: 所有适用例程都无法建立新连

用了网上的办法：

1、修改listener.ora的参数,把动态的参数设置为静态的参数,红色标注部分

位置D:\oracle\product\10.2.0\db_1\NETWORK\ADMIN

SID_LIST_LISTENER =
  (SID_LIST =
(SID_DESC =
   (SID_NAME = PLSExtProc)
   (ORACLE_HOME = D:\oracle\product\10.1.0\db_1)
      (PROGRAM = extproc)
)
(SID_DESC =
   (GLOBAL_DBNAME = orcl) //如果已经有这个orcl了，这个文件就不用修改
      (ORACLE_HOME = D:\oracle\product\10.1.0\db_1) //这里要根据你的实际路径来
      (SID_NAME = orcl)
)
  )
LISTENER =
  (DESCRIPTION_LIST =
(DESCRIPTION =
   (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = lypch )(PORT = 1521))
   )
   (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
   )
)
  )

2、通过修改tnsnames.ora的参数,红色表注部分
# tnsnames.ora Network Configuration File: D:\oracle\product\10.1.0\db_1
\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
AMMICLY =
  (DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = lypch )(PORT = 1521))
(CONNECT_DATA =
      (SERVER = DEDICATED)
   (SERVICE_NAME = orcl)
   (UR=A) //加上这个，不知道是什么意思
)
  )
EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
(ADDRESS_LIST =
   (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(CONNECT_DATA =
   (SID = PLSExtProc)
   (PRESENTATION = RO)
)
  )
3、然后 sqlplus /nolog
SQL>alter database mount;
SQL>alter database open;