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Oracle listener静态注册和动态注册总结

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Jun 07, 2016 pm 03:15 PM

listeneroracledynamicSummarizeregisterstatic

欢迎进入Oracle社区论坛，与200万技术人员互动交流 >>进入一、什么是注册？注册就是将数据库作为一个服务注册到监听程序。客户端不需要知道数据库名和实例名，只需要知道该数据库对外提供的服务名就可以申请连接到数据库。这个服务名可能与实例名一样，也

欢迎进入Oracle社区论坛，与200万技术人员互动交流 >>进入

一、什么是注册？

注册就是将数据库作为一个服务注册到监听程序。客户端不需要知道数据库名和实例名，只需要知道该数据库对外提供的服务名就可以申请连接到数据库。这个服务名可能与实例名一样，也有可能不一样。

在数据库服务器启动过程中，数据库服务器会向监听程序注册相应的服务（无论何时启动一个数据库，默认地都有两条信息注册到监听器中：数据库服务器对应的实例和服务。）

相当于是这样：在数据库服务器和客户端之间有一监听程序（Listener），在监听程序中，会记录相应数据库对应的服务名（一个数据库可能对应有多个服务名），当客户端需要连接数据库时，只需要提供服务名，就可以建立客户端和服务器之间的连接。

二、静态注册

静态注册就是实例启动时读取listener.ora文件的配置，将实例和服务注册到监听程序。无论何时启动一个数据库，默认地都有两条信息注册到监听器中：数据库服务器对应的实例和服务。

静态注册时，listener.ora中的GLOBAL_DBNAME向外提供服务名，listener.ora中的SID_NAME提供注册的实例名。

采取静态注册方法时，listener.ora中的内容如下：

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =

(SID_NAME = PLSExtProc)

(ORACLE_HOME = D:\oracle\product\10.2.0\db_1)

(PROGRAM = extproc)

)

(SID_DESC =

(GLOBAL_DBNAME =orcl)

(ORACLE_HOME = D:\oracle\product\10.2.0\db_1)

(SID_NAME =orcl)

)

(SID_DESC =

(GLOBAL_DBNAME =orcl1)

(ORACLE_HOME = D:\oracle\product\10.2.0\db_1)

(SID_NAME =orcl)

)

该文件表明数据库是单实例的，实例名为orcl，向外提供了两个服务：orcl和orcl1

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Oracle listener静态注册和动态注册总结

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