Oracle 监听动态注册与静态注册

静态注册

　　静态注册是在启动listener时，listener会从listener.ora文件中获取服务名及相关信息。信息包括：实例名和服务名等。

--静态注册时，listener.ora中的内容如下：

 1 #SID_LIST_LISTENER描述对外提供数据库服务的列表；

 2 #两个实例sun，+ASM分别对应服务名orcl01，orcl02    

 3 SID_LIST_LISTENER =

 4 (

 5     SID_LIST =

 6     (

 7       SID_DESC =

 8       (SID_NAME = PLSExtProc)

 9       (ORACLE_HOME = /u01/oracle)

10       (PROGRAM = extproc)

11     )

12     

13     (

14       SID_DESC =

15       (SID_NAME = sun)          --提供注册的实例名

16       (ORACLE_HOME = /u01/oracle)

17       (GLOBAL_DBNAME =orcl01)   --向外提供服务名

18      )

19         

20     (

21       SID_DESC =

22       (SID_NAME = +ASM)

23       (ORACLE_HOME = /u01/oracle)

24       (GLOBAL_DBNAME =orcl02) 

25     )       

26 )

27 

28 #LISTENER部分描述了主机地址、端口及协议

29 LISTENER =

30   (DESCRIPTION =

31     (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.128)(PORT = 1521))

32   ) 

--配置对应的tnsnames.ora 中的节点

 1 -bash-3.00$ more tnsnames.ora

 2 # tnsnames.ora Network Configuration File: /u01/oracle/network/admin/tnsnames.ora

 3 # Generated by Oracle configuration tools.

 4 

 5 #通过实例名连接

 6 SUN01 =

 7   (DESCRIPTION =

 8     (ADDRESS_LIST =

 9       (ADDRESS = (PROTOCOL = TCP)(HOST = mysolaris)(PORT = 1521))

10     )

11     (CONNECT_DATA =

12       (SID = sun)  

13     )

14   )

15   

16 #通过服务名连接  

17 SUN02 =

18   (DESCRIPTION =

19     (ADDRESS_LIST =

20       (ADDRESS = (PROTOCOL = TCP)(HOST = mysolaris)(PORT = 1521))

21     )

22     (CONNECT_DATA =

23       (SERVICE_NAME = orcl01)

24     )

25   )  

26   

27 #通过实例名连接

28 ASM01 =

29   (DESCRIPTION =

30     (ADDRESS_LIST =

31       (ADDRESS = (PROTOCOL = TCP)(HOST = mysolaris)(PORT = 1521))

32     )

33     (CONNECT_DATA =

34       (SID = +ASM)  

35     )

36   )  

37   

38 #通过服务名连接   

39 ASM02 =

40   (DESCRIPTION =

41     (ADDRESS_LIST =

42       (ADDRESS = (PROTOCOL = TCP)(HOST = mysolaris)(PORT = 1521))

43     )

44     (CONNECT_DATA =

45       (SERVICE_NAME = orcl02)

46     )

47   ) 

48 

49 

50 EXTPROC_CONNECTION_DATA =

51   (DESCRIPTION =

52     (ADDRESS_LIST =

53       (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))

54     )

55     (CONNECT_DATA =

56       (SID = PLSExtProc)

57       (PRESENTATION = RO)

58     )

59   )     

--启动监听

-bash-3.00$ lsnrctl start



LSNRCTL for Solaris: Version 10.2.0.2.0 - Production on 10-AUG-2013 20:50:35



Copyright (c) 1991, 2005, Oracle.  All rights reserved.



Starting /u01/oracle/bin/tnslsnr: please wait...



TNSLSNR for Solaris: Version 10.2.0.2.0 - Production

System parameter file is /u01/oracle/network/admin/listener.ora

Log messages written to /u01/oracle/network/log/listener.log

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.100)(PORT=1521)))

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))



Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.2.100)(PORT=1521)))

STATUS of the LISTENER

------------------------

Alias                     LISTENER

Version                   TNSLSNR for Solaris: Version 10.2.0.2.0 - Production

Start Date                10-AUG-2013 20:50:35

Uptime                    0 days 0 hr. 0 min. 0 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

Listener Parameter File   /u01/oracle/network/admin/listener.ora

Listener Log File         /u01/oracle/network/log/listener.log

Listening Endpoints Summary...

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.100)(PORT=1521)))

  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))

Services Summary...

Service "PLSExtProc" has 1 instance(s).

  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...

Service "orcl01" has 1 instance(s).

  Instance "sun", status UNKNOWN, has 1 handler(s) for this service...

Service "orcl02" has 1 instance(s).

  Instance "+ASM", status UNKNOWN, has 1 handler(s) for this service...

The command completed successfully

--可以看到实例sun及实例+ASM都在被监听

1 Service "orcl01" has 1 instance(s).

2   Instance "sun", status UNKNOWN, has 1 handler(s) for this service...

3 Service "orcl02" has 1 instance(s).

4   Instance "+ASM", status UNKNOWN, has 1 handler(s) for this service...

   从上面信息可以看到，静态注册时监听程序所获取的实例名或服务名均来自listener.ora文件

动态注册

　　动态注册是在instance启动的时候PMON进程根据init.ora中的instance_name,service_names两个参数将实例和服务动态注册到listener中。

• instance_name默认是：db_name
• service_names默认是：db_name.db_domain 

　　在启动listener时，会从listener.ora读取监听配置，如果该文件不存在，则监听会在主机名对应的IP和1521端口上进行监听。但监听刚刚启动的时候，并没有注册的服务。

1.配置默认端口的动态服务注册

--关闭实例，关闭监听，备份listener.ora

1 -bash-3.00$ ls -l

2 -rw-r--r--   1 oracle   oinstall     603 Aug 10 20:50 listener.ora.bak

3 drwxr-x---   2 oracle   oinstall     512 Jan 21  2013 samples

4 -rw-r-----   1 oracle   oinstall     172 Dec 26  2003 shrept.lst

5 -rw-r--r--   1 oracle   oinstall    1056 Aug 10 20:40 tnsnames.ora

--启动监听

 1 -bash-3.00$ lsnrctl start

 2 .........

 3 Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))

 4 STATUS of the LISTENER

 5 ------------------------

 6 Alias                     LISTENER

 7 Version                   TNSLSNR for Solaris: Version 10.2.0.2.0 - Production

 8 Start Date                10-AUG-2013 22:20:20

 9 Uptime                    0 days 0 hr. 0 min. 0 sec

10 Trace Level               off

11 Security                  ON: Local OS Authentication

12 SNMP                      OFF

13 Listener Log File         /u01/oracle/network/log/listener.log

14 Listening Endpoints Summary...

15   (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=mysolaris)(PORT=1521)))

16 The listener supports no services

17 The command completed successfully

　　可以看到：监听会在主机名对应的IP和1521端口上进行监听；监听刚刚启动的时候，并没有注册的服务

--启动实例后，查看监听 发现PMON进程会将服务注册进来

 1 -bash-3.00$ lsnrctl status

 2 ........

 3 Listening Endpoints Summary...

 4   (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=mysolaris)(PORT=1521)))

 5 Services Summary...

 6 Service "+ASM" has 1 instance(s).

 7   Instance "+ASM", status BLOCKED, has 1 handler(s) for this service...

 8 Service "+ASM_XPT" has 1 instance(s).

 9   Instance "+ASM", status BLOCKED, has 1 handler(s) for this service...

10 Service "sun" has 1 instance(s).

11   Instance "sun", status READY, has 1 handler(s) for this service...

12 Service "sun_XPT" has 1 instance(s).

13   Instance "sun", status READY, has 1 handler(s) for this service...

14 The command completed successfully

2.配置非默认端口的动态服务注册

服务器端的配置

a.配置非默认的listener.ora

1 -bash-3.00$ more listener.ora 

2 

3 LISTENER02 =     --这个名字最好不要用默认的LISTENER

4   (DESCRIPTION_LIST =

5     (DESCRIPTION =

6       (ADDRESS = (PROTOCOL = TCP)(HOST = mysolaris)(PORT = 1522))

7       (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))

8     )

9   )

b.在配置文件tnsnames.ora中加入

 1 -bash-3.00$ more tnsnames.ora

 2 # tnsnames.ora Network Configuration File: /u01/oracle/network/admin/tnsnames.ora

 3 # Generated by Oracle configuration tools.

 4 

 5 LISTENER02 = (

 6     ADDRESS = (PROTOCOL = TCP)

 7               (HOST = mysolaris)

 8               (PORT = 1522)

 9 )

10 -bash-3.00$ 

c.启动非默认的侦听器

 1 -bash-3.00$ lsnrctl start LISTENER02

 2 

 3 STATUS of the LISTENER

 4 ------------------------

 5 Alias                     LISTENER02

 6 Version                   TNSLSNR for Solaris: Version 10.2.0.2.0 - Production

 7 Start Date                10-AUG-2013 23:22:01

 8 Uptime                    0 days 0 hr. 0 min. 0 sec

 9 Trace Level               off

10 Security                  ON: Local OS Authentication

11 SNMP                      OFF

12 Listener Parameter File   /u01/oracle/network/admin/listener.ora

13 Listener Log File         /u01/oracle/network/log/listener.log

14 Listening Endpoints Summary...

15   (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.100)(PORT=1522)))

16   (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))

17 The listener supports no services

18 The command completed successfully

19 -bash-3.00$ 

d.设定local_listener参数

1 SQL> alter system set local_listener = 'LISTENER02'; --LISTENER2为tnsnames.ora中的监听名称

e.手动使动态注册立即生效（此操作可有可无）

1 SQL> alter system register;