oracle静态注册-CFANZ编程社区

当启动listener以后，需要将数据库的实例注册到listener以后，客户端才可以进行远程的连接。对默认的listener可以通过pmon进行动态注册，非默认listener是不对其进行注册的，如果需要进行动态注册需要配置，这样比较麻烦。对非默认listener需要添加静态注册，即在listener的配置文件里面指定配置信息。

下面是静态注册的例子，在listener.ora里面加上服务列表

[oracle@Database2 ~]$ vi /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora
LISTENER2 =    --这个是添加的非1521端口的非默认监听
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
    )
  )

SID_LIST_LISTENER2 =  --给非默认监听添加配置，让其静态注册
      (SID_LIST =
       (SID_DESC =
            (GLOBAL_DBNAME = oradba)
            (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
            (SID_NAME = oradb)
     )
   )

GLOBAL_DBNAME = oradb默认和db_name一样，SID_NAME是实例名字。

[oracle@Database2 ~]$ lsnrctl stop LISTENER2
[oracle@Database2 ~]$ lsnrctl start LISTENER2
[oracle@Database2 ~]$ lsnrctl status LISTENER2  --可以看到非默认监听静态注册了
Services Summary...
Service "oradba" has 1 instance(s).
  Instance "oradb", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

实例状态为 UNKNOWN 值时表明此服务是静态注册的。这时监听器用来表明它不知道关于该实例的任何信息，只有当客户发出连接请求时，才检查该实例是否存在。

在该配置文件里面可以配置多个SID_DESC来添加多个实例和服务。

SID_LIST_LISTENER2 =
      (SID_LIST =
       (SID_DESC =
            (GLOBAL_DBNAME = oradba)
            (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
            (SID_NAME = oradb)
     )
           (SID_DESC =
            (GLOBAL_DBNAME = orcl)
            (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
            (SID_NAME = orcl)
   )
          (SID_DESC =
            (GLOBAL_DBNAME = ordb)
            (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
            (SID_NAME = oradb)
  )
)

[oracle@Database2 ~]$ lsnrctl start LISTENER2
Services Summary...
Service "oradba" has 1 instance(s).
  Instance "oradb", status UNKNOWN, has 1 handler(s) for this service...
 
Service "orcl" has 1 instance(s).
  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
 
Service "ordb" has 1 instance(s).
  Instance "oradb", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

可以看到通过配置多个SID_DESC，可以将多个实例和服务进行静态注册。

静态listener和动态listener这样结合起来可以负载均衡，一部分客户端去连接动态注册的listener，一部分去连接静态listener。静态注册就是直接去配置文件里面将要注册的实例名信息（SID_NAME）和服务名信息（GLOBAL_DBNAME ）写进去就行。注意配置信息是SID_LIST_LISTENER2格式，即SID_LIST_+监听名字。

最后注意，默认监听也可以进行静态注册和上面一样，注意SID_LIST_LISTENER要写到LISTENER的下方

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
  )


SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = oradba)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (SID_NAME = oradb)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (SID_NAME = orcl)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = ordb)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (SID_NAME = oradb)
    )
  )