Listener设置
 Single db的监听器设置和查看
lsnrctl status- ->察看listener状态
lsnrctl stop  - ->关闭listener
lsnrctl start  - ->开起listener

 Listener配置文件：
Listener Parameter File ： /oracle/product/10.2.0/network/admin/listener.ora

 RHCS db的监听器设置和查看
lsnrctl status listener_rhcsnode1  
lsnrctl status listener_rhcsnode2

LSNRCTL> status  listener_rhcsnode1
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rhcsnode1db1-vip)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     listener_rhcsnode1
Version                   TNSLSNR for Linux: Version 10.2.0.3.0 - Production
Start Date                19-APR-2010 12:11:57
Uptime                    22 days 22 hr. 29 min. 41 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/product/10.2.0/network/admin/listener.ora
Listener Log File         /oracle/product/10.2.0/network/log/listener_rhcsnode1.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.178.1.64)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "rhcsnode1" has 2 instance(s).
  Instance "rhcsnode1", status UNKNOWN, has 1 handler(s) for this service...
  Instance "rhcsnode1", status READY, has 1 handler(s) for this service...
Service "rhcsnode1_XPT" has 1 instance(s).
  Instance "rhcsnode1", status READY, has 1 handler(s) for this service...
The command completed successfully

oracle@rhcsnode1db1: /home/oracle> more  /oracle/product/10.2.0/network/admin/listener.ora
# listener.ora Network Configuration File: /oracle/product/10.2.0/network/admin/listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER_RHCSNODE2 =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = rhcsnode2)
      (ORACLE_HOME = /oracle/product/10.2.0)
      (SID_NAME = rhcsnode2)
    )
  )

LISTENER_RHCSNODE1 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rhcsnode1db1-vip)(PORT = 1521))
  )

LISTENER_RHCSNODE2 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rhcsnode2db1-vip)(PORT = 1521))
  )

SID_LIST_LISTENER_RHCSNODE1 =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = /oracle/product/10.2.0)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = rhcsnode1)
      (ORACLE_HOME = /oracle/product/10.2.0)
      (SID_NAME = rhcsnode1)
    )
  )

其他公司的rhcs listener怎样设置呢？
为什么区别开来？
这里用vip好吗 合理吗？