解决（Oracle）ORA-12528: TNS: 监听程序: 所有适用例程都无法建立新连接 问题

洋名字叫：ORA-12528: TNS:listener: all appropriate instances are blocking new connections

通过在CMD下用lsnrctl status 查看出的问题。

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

注：ammicly 就是所谓的数据库实例。

上个图样。

显然我上面的图是正确的，而出错情况下为：

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

1，可以通过修改listener.ora（该文件位于:{你的Oracle安装盘}:\app\administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN）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))
      )
    )
  )

2，也可以通过修改tnsnames.ora文件（该文件位于:{你的Oracle安装盘}:\app\administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN）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;

该文转自：http://blog.oracle.com.cn/html/47/t-106647.html