运行模式与切换脚本
SinoDB 的四种运行模式
离线模式
不能执行任何操作
[informix@vm84145 ~]$ onstat -
shared memory not initialized for INFORMIXSERVER 'sinodb'
[informix@vm84145 ~]$ dbaccess testdb -
908: Attempt to connect to database server (sinodb) failed.
在线模式
可以执行各种操作。
单用户模式
可以执行SQL操作和命令行维护操作。只能管理员连接，其它普通用户不能连接。
27010: Only an administrative user can connect in administrative user mode.
[informix@vm84145 ~]$ onmode -ky
[informix@vm84145 ~]$ oninit -j
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Single-User -- Up 00:00:58 -- 2374324 Kbytes
静态模式
只能执行命令行维护操作（如备份数据库）。
不能执行SQL命令（27002: No connections are allowed in quiescent mode.）
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:01:15 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -s
This will perform a GRACEFUL SHUTDOWN -
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Quiescent -- Up 00:02:38 -- 2374324 Kbytes
[informix@vm84145 ~]$ dbaccess testdb -
27002: No connections are allowed in quiescent mode.
SinoDB 3种过渡状态
初始化（Initialization）
快速恢复（Fast Recovery）
关闭（Shutting Down）
SinoDB 的模式转换状态图
SinoDB 可从一个运行模式,转换到另一个运行模式.
离线转在线
[informix@vm84145 ~]$ onstat -
shared memory not initialized for INFORMIXSERVER 'sinodb'
[informix@vm84145 ~]$ oninit
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:00:15 -- 2374324 Kbytes
[informix@vm84145 ~]$
单用户转在线
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Single-User -- Up 00:13:56 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -m
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:14:34 -- 2374324 Kbytes
[informix@vm84145 ~]$
静态转在线
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Quiescent -- Up 00:16:37 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -m
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:17:33 -- 2374324 Kbytes
[informix@vm84145 ~]$
在线转单用户
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:17:33 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -j
This will change mode to single user. Only DBSA/informix can connect
in this mode.
Do you wish to continue (y/n)? y
All threads which are not owned by DBSA/informix will be killed.
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Single-User -- Up 00:18:28 -- 2374324 Kbytes
[informix@vm84145 ~]$
单用户转离线
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Single-User -- Up 00:19:21 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -k
This will take Sinoregal SinoDB Dynamic Server OFF-LINE -
Do you wish to continue (y/n)? y
There are 0 user threads that will be killed.
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
shared memory not initialized for INFORMIXSERVER 'sinodb'
[informix@vm84145 ~]$
在线转离线
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:00:32 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -k
This will take Sinoregal SinoDB Dynamic Server OFF-LINE -
Do you wish to continue (y/n)? y
There are 0 user threads that will be killed.
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
shared memory not initialized for INFORMIXSERVER 'sinodb'
[informix@vm84145 ~]$
在线转静态
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:01:15 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -s
This will perform a GRACEFUL SHUTDOWN -
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Quiescent -- Up 00:02:38 -- 2374324 Kbytes
或者
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- On-Line -- Up 00:01:23 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -u
This will perform an IMMEDIATE SHUTDOWN -
Do you wish to continue (y/n)? y
There are 0 user threads that will be killed.
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Quiescent -- Up 00:02:48 -- 2374324 Kbytes
静态转离线
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
Sinoregal SinoDB Dynamic Server Version 12.10.FC8 -- Quiescent -- Up 00:02:48 -- 2374324 Kbytes
[informix@vm84145 ~]$ onmode -k
This will take Sinoregal SinoDB Dynamic Server OFF-LINE -
Do you wish to continue (y/n)? y
There are 0 user threads that will be killed.
Do you wish to continue (y/n)? y
[informix@vm84145 ~]$ onstat -
shared memory not initialized for INFORMIXSERVER 'sinodb'
[informix@vm84145 ~]$
附录
SinoDB的模式转换状态表
