Oracle 11.2.0.3在非Exadata环境禁掉了diskmon服务


今天装了个Oracle 11.2.0.3的环境，结果发现diskmon总是处于offline状态：

[root@osdbso ~]# crs_stat -t
Name           Type           Target    State     Host        
------------------------------------------------------------
ora.DATA.dg    ora....up.type ONLINE    ONLINE    osdbso      
ora....ER.lsnr ora....er.type ONLINE    ONLINE    osdbso      
ora.asm        ora.asm.type   ONLINE    ONLINE    osdbso      
ora.cssd       ora.cssd.type  ONLINE    ONLINE    osdbso      
ora.diskmon    ora....on.type OFFLINE   OFFLINE               
ora.evmd       ora.evm.type   ONLINE    ONLINE    osdbso      
ora.oemrep.db  ora....se.type ONLINE    ONLINE    osdbso      
ora.ons        ora.ons.type   OFFLINE   OFFLINE               

由于在之前的版本中ora.diskmon和ora.cssd服务是互相依赖的，及这两个服务中随便停止那个两个都会停止，同样的随便启动那个两个都会启动。

可是在上面的案例中，我发现cssd服务是起来的。查看一下这两个服务的属性

[root@osdbso ~]# crs_stat -p ora.diskmon
NAME=ora.diskmon
TYPE=ora.diskmon.type
ACTION_SCRIPT=
ACTIVE_PLACEMENT=0
AUTO_START=never
CHECK_INTERVAL=3
DESCRIPTION="Resource type for Diskmon"
FAILOVER_DELAY=0
FAILURE_INTERVAL=3
FAILURE_THRESHOLD=5
HOSTING_MEMBERS=
PLACEMENT=balanced
RESTART_ATTEMPTS=10
SCRIPT_TIMEOUT=60
START_TIMEOUT=600
STOP_TIMEOUT=60
UPTIME_THRESHOLD=5s


[root@osdbso ~]# crs_stat -p ora.cssd
NAME=ora.cssd
TYPE=ora.cssd.type
ACTION_SCRIPT=
ACTIVE_PLACEMENT=0
AUTO_START=never
CHECK_INTERVAL=30
DESCRIPTION="Resource type for CSSD"
FAILOVER_DELAY=0
FAILURE_INTERVAL=3
FAILURE_THRESHOLD=5
HOSTING_MEMBERS=
PLACEMENT=balanced
RESTART_ATTEMPTS=5
SCRIPT_TIMEOUT=600
START_TIMEOUT=600
STOP_TIMEOUT=900
UPTIME_THRESHOLD=1m

发现两者的随has自动启动属性都是never，以为和这个有关，然后都修改为随has自动启动：

crsctl modify resource "ora.diskmon" -attr "AUTO_START=1"

crsctl modify resource "ora.cssd^C-attr "AUTO_START=1"

然后从其cssd或者diskmon的服务：

[root@osdbso ~]# crsctl stop resource ora.cssd
CRS-2673: Attempting to stop 'ora.cssd' on 'osdbso'
CRS-2677: Stop of 'ora.cssd' on 'osdbso' succeeded
[root@osdbso ~]# crsctl start resource ora.diskmon
CRS-2672: Attempting to start 'ora.diskmon' on 'osdbso'
CRS-2672: Attempting to start 'ora.cssd' on 'osdbso'
CRS-2676: Start of 'ora.diskmon' on 'osdbso' succeeded
CRS-2676: Start of 'ora.cssd' on 'osdbso' succeeded

启动的时候也提示diskmon服务成功启动，但是查依然是offline状态，并且cssd服务的日志里面存着如下信息：

2012-05-01 10:46:43.735: [ default][3976595200]CELL communication is configured to use 0 interface(s):

2012-05-01 10:46:43.735: [ default][3976595200]Kgzf_ini_begin: diskmon is disabled

2012-05-01 10:46:43.735: [    CSSD][3976595200]clssscSAGEInitFencing: kgzf fence initialization successfully started

直接就误解了，没办法还是上MOS把，结果不查不知道一查吓一跳，原来在11.2.0.3版本的非Exadata数据库上，diskmon的服务是被disable掉的。

请看官文：

11.2.0.3 Grid Infrastructure diskmon Will be Offline by Default in Non-Exadata Environment [ID 1346881.1]
  修改时间 26-SEP-2011     类型 ANNOUNCEMENT     状态 PUBLISHED  

In this Document

What is being announced?

As Grid Infrastructure daemon diskmon.bin is used for Exadata fencing, started from 11.2.0.3, resource ora.diskmon will be offline in non-Exadata environment. This is expected behaviour change.


Prior to 11.2.0.3:

ps -ef| grep diskmon.bin
grid      3361  3166  0 22:57 ?        00:00:00 /ocw/grid/bin/diskmon.bin -d -f



On 11.2.0.3:

ps -ef| grep diskmon.bin

>> no more diskmon.bin

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