lsnrctl status
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=lypch)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
Services Summary...
Service "LSExtProc" has 1 instance(s).
  Instance "LSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "ammicly" has 1 instance(s).
  Instance "ammicly", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully

这个问题说明数据库没有Mount
连接数据库,发现:
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
用sqlplus /nolog
sql>connect [email=sys/ammic@amicly]sys/ammic@amicly[/email] as sysdba
ORA-12528: TNS:listener: all appropriate instances are blocking new connections

连接的问题可以通过修改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,然后从新启动监听,就OK
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\oracle\product\10.1.0\db_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = ammicly)
      (ORACLE_HOME = c:\oracle\product\10.1.0\db_1)
      (SID_NAME = ammicly)
    )
  )
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = lypch )(PORT = 1521))
      )
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
      )
    )
  )

通过修改tnsnames.ora的参数,红色表注部分
# tnsnames.ora Network Configuration File: C:\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 = ammicly)
      (UR=A)
    )
  )
EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )

然后 sqlplus /nolog
SQL>alter database mount;
SQL>alter database open;

这样就可以启动数据库了;

或者用Oradim -shutdown -sid ammicly -shuttype srvc,inst -shutmode immediate -syspwd ammic;关闭数据库
在用oradim -startup -sid ammicly -starttype srvc,inst -syspwd ammic;启动数据库解决;也可以在截面上从启动数据库服务来解决;

总结RA-12528问题是因为监听中的服务使用了动态服务,系统启动后,数据库没有正常的MOUNT,因此在动态模式下,就会出现这个问题，用静态的就不会有这个问题,因此上面的方法就是把监听设置为静态,或者在tnsnames.ora中追加(UR=A)或者从启动服务,三种方法解决问题;