需要必須掌握的指令，上周遇到了一個小問題，就是需要重新開機資料庫監聽，有的同學竟然使用oracle使用者重新開機監聽，原理就搞錯了怎麼行。以下操作都需要再grid使用者下進行操作。
1、檢視監聽狀态
$srvctl status listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): roidb1,roidb2
$srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node roidb2
$
2、關閉監聽
$srvctl stop listener -n roidb1
$srvctl status listener -n roidb1
Listener LISTENER is enabled on node(s): roidb1
Listener LISTENER is not running on node(s): roidb1
$
$srvctl stop scan_listener
$srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is not running
$
3、啟動監聽
$srvctl start listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): roidb1,roidb2
$srvctl start scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node roidb2
$
srvctl stop scan_listener
srvctl start scan_listener
srvctl status scan_listener
srvctl stop listener -n dcdbrac2
srvctl start listener -n dcdbrac2
srvctl status listener -n dcdbrac2
srvctl stop listener -n dcdbrac1
srvctl start listener -n dcdbrac1
srvctl status listener -n dcdbrac1
先啟動本地監聽，最後啟動 scan_listener