oracle动态监听 与 静态监听 的区别

1, oracle 10g 用netca方式建立的都默认为动态注册方式

2，如果想改为静态注册的方式则在listener.ora 中加入如下内容即可

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =

(SID_NAME = PLSExtProc)

(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)

(PROGRAM = extproc)

)

(SID_DESC =

(SID_NAME = JEFF )

(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1) --就这一段

(GLOBAL_DBNAME = jeff)

)

)

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = r1)(PORT = 1521))

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

)

)

3，两者的区别

即静态注册，listener不知道实例的状态，只有在进程通过其连接数据库时才能知道，如果你想使用远程管理数据库就使用静态监听

动态注册：listener实时的都知道实例的状态，数据库在关闭的时候会动态的从listener中注销，所以远程管理数据库的启动和停止就不行了。

4，如何判断是静态注册还是动态注册

(1) 可以通过配置文件判断

动态注册

SID_LIST_LISTENER =

  (SID_LIST =

    (SID_DESC =

      (PROGRAM = extproc)

      (SID_NAME = PLSExtProc)

      (ORACLE_HOME = D:\oradata\orcl)

    )

  )

静态注册

SID_LIST_LISTENER =

  (SID_LIST =

    (SID_DESC =

      (PROGRAM = extproc)

      (SID_NAME = PLSExtProc)

      (ORACLE_HOME = D:\oradata\orcl)

    )

    (SID_DESC =

      (GLOBAL_DBNAME = orcl)

      (ORACLE_HOME = D:\oradata\orcl)

      (SID_NAME = ORCL)

    )

    (SID_DESC =

      (GLOBAL_DBNAME = orcl1)

      (ORACLE_HOME = D:\oradata\orcl)

      (SID_NAME = ORCL)

    )

  )

通过查看虽然可以大致看出，但是这种方法并不能和明确的现实数据库在运行时的实际情况

(2) lsnrclt status

----静态注册是这样的 都是unknow

Services Summary...

Service "PLSExtProc" has 1 instance(s).

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

Service "jeff" has 1 instance(s).

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

The command completed successfully

 

-----动态注册是这样的

Services Summary...

Service "JEFF" has 1 instance(s).

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

Service "JEFFXDB" has 1 instance(s).

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

Service "JEFF_XPT" has 1 instance(s).

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

Service "PLSExtProc" has 1 instance(s).

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

The command completed successfully

3,有时候会碰到即使listener起来也不能连接到数据库的情况 。会报一个ORA-12514 ，

运行lsnrctls status 是这个样子的 ，说明没有服务没有注册进来

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=r1)(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...

The command completed successfully

解决方法：

alter system register; ---手动将服务注册到listener中

 

4，如果我想使用动态注册，但是又不想使用1521端口怎么办

这个时候我们就要用到 local_listener这个参数了，当你使用的是其他端口比如说是1522端口，那么只要配置这个参数就ok了。

SQL> alter system set local_listener='(DESCRIPTION =

2 (ADDRESS = (PROTOCOL = TCP)(HOST = xys)(PORT = 1522))

3 )';