rac 中unknown 状态处理
此时可有两种方法来解决：
方法一：先禁用crs服务，后启用crs服务
（相当于从新启动系统，因为crs是随系统自动启动的），需要在两台节点上都执行；
具体步骤：
节点1：
1、[root@rac1 ~]# /etc/init.d/init.crs stop
Shutting down Oracle Cluster Ready Services (CRS):
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
Shutdown has begun. The daemons should exit soon.
2、[root@rac1 ~]# su - oracle
[oracle@rac1 ~]$ crs_stat -t
CRS-0184: Cannot communicate with the CRS daemon.
3、[oracle@rac1 ~]$ exit
logout
[root@rac1 ~]# /etc/init.d/init.crs start
Startup will be queued to init within 90 seconds.
4、[root@rac1 ~]# su - oracle
[oracle@rac1 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.ora9i.db application ONLINE ONLINE rac1
ora....i1.inst application ONLINE ONLINE rac1
ora....i2.inst application ONLINE ONLINE rac2
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE ONLINE rac1
ora.rac1.gsd application ONLINE ONLINE rac1
ora.rac1.ons application ONLINE ONLINE rac1
ora.rac1.vip application ONLINE ONLINE rac1
ora....SM2.asm application ONLINE ONLINE rac2
ora....C2.lsnr application ONLINE ONLINE rac2
ora.rac2.gsd application ONLINE ONLINE rac2
ora.rac2.ons application ONLINE ONLINE rac2
ora.rac2.vip application ONLINE ONLINE rac2
[oracle@rac1 ~]$
节点2：
1、[root@rac2 ~]# /etc/init.d/init.crs stop
Shutting down Oracle Cluster Ready Services (CRS):
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
Shutdown has begun. The daemons should exit soon.
2、[root@rac2 ~]# su - oracle
[oracle@rac2 ~]$ crs_stat -t
CRS-0184: Cannot communicate with the CRS daemon.
[oracle@rac2 ~]$ exit
logout
3、[root@rac2 ~]# /etc/init.d/init.crs start
Startup will be queued to init within 90 seconds.
4、[root@rac2 ~]# su - oracle
[oracle@rac2 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.ora9i.db application ONLINE ONLINE rac1
ora....i1.inst application ONLINE ONLINE rac1
ora....i2.inst application ONLINE ONLINE rac2
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE ONLINE rac1
ora.rac1.gsd application ONLINE ONLINE rac1
ora.rac1.ons application ONLINE ONLINE rac1
ora.rac1.vip application ONLINE ONLINE rac1
ora....SM2.asm application ONLINE ONLINE rac2
ora....C2.lsnr application ONLINE ONLINE rac2
ora.rac2.gsd application ONLINE ONLINE rac2
ora.rac2.ons application ONLINE ONLINE rac2
ora.rac2.vip application ONLINE ONLINE rac2
[oracle@rac2 ~]$
方法二：可以使用crs_stop -f先强制停止服务，在启动服务（在一台节点上运行即可）；
具体步骤：
[oracle@rac2 ~]$ crs_stop -f ora.rac1.ons
Attempting to stop `ora.rac1.ons` on member `rac1`
Stop of `ora.rac1.ons` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac1.ons
Attempting to start `ora.rac1.ons` on member `rac1`
Start of `ora.rac1.ons` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.rac2.ons
Attempting to stop `ora.rac2.ons` on member `rac2`
Stop of `ora.rac2.ons` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac2.ons
Attempting to start `ora.rac2.ons` on member `rac2`
Start of `ora.rac2.ons` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.rac1.gsd
Attempting to stop `ora.rac1.gsd` on member `rac1`
Stop of `ora.rac1.gsd` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac1.gsd
Attempting to start `ora.rac1.gsd` on member `rac1`
Start of `ora.rac1.gsd` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.rac2.gsd
Attempting to stop `ora.rac2.gsd` on member `rac2`
Stop of `ora.rac2.gsd` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac2.gsd
Attempting to start `ora.rac2.gsd` on member `rac2`
Start of `ora.rac2.gsd` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.rac1.LISTENER_RAC1.lsnr
Attempting to stop `ora.rac1.LISTENER_RAC1.lsnr` on member `rac1`
Stop of `ora.rac1.LISTENER_RAC1.lsnr` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac1.LISTENER_RAC1.lsnr
Attempting to start `ora.rac1.LISTENER_RAC1.lsnr` on member `rac1`
Start of `ora.rac1.LISTENER_RAC1.lsnr` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.rac2.LISTENER_RAC2.lsnr
Attempting to stop `ora.rac2.LISTENER_RAC2.lsnr` on member `rac2`
Stop of `ora.rac2.LISTENER_RAC2.lsnr` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac2.LISTENER_RAC2.lsnr
Attempting to start `ora.rac2.LISTENER_RAC2.lsnr` on member `rac2`
Start of `ora.rac2.LISTENER_RAC2.lsnr` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.rac1.ASM1.asm
Attempting to stop `ora.rac1.ASM1.asm` on member `rac1`
Stop of `ora.rac1.ASM1.asm` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac1.ASM1.asm
Attempting to start `ora.rac1.ASM1.asm` on member `rac1`
Start of `ora.rac1.ASM1.asm` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.rac2.ASM2.asm
Attempting to stop `ora.rac2.ASM2.asm` on member `rac2`
Stop of `ora.rac2.ASM2.asm` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.rac2.ASM2.asm
Attempting to start `ora.rac2.ASM2.asm` on member `rac2`
Start of `ora.rac2.ASM2.asm` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.ora9i.ora9i1.inst
`ora.ora9i.ora9i1.inst` is already OFFLINE.
CRS-0216: Could not stop resource 'ora.ora9i.ora9i1.inst'.
[oracle@rac2 ~]$ crs_start -f ora.ora9i.ora9i1.inst
Attempting to start `ora.ora9i.ora9i1.inst` on member `rac1`
Start of `ora.ora9i.ora9i1.inst` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.ora9i.ora9i2.inst
`ora.ora9i.ora9i2.inst` is already OFFLINE.
CRS-0216: Could not stop resource 'ora.ora9i.ora9i2.inst'.
[oracle@rac2 ~]$ crs_start -f ora.ora9i.ora9i2.inst
Attempting to start `ora.ora9i.ora9i2.inst` on member `rac2`
Start of `ora.ora9i.ora9i2.inst` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_stop -f ora.ora9i.db
Attempting to stop `ora.ora9i.db` on member `rac2`
Stop of `ora.ora9i.db` on member `rac2` succeeded.
[oracle@rac2 ~]$ crs_start -f ora.ora9i.db
Attempting to start `ora.ora9i.db` on member `rac1`
Start of `ora.ora9i.db` on member `rac1` succeeded.
[oracle@rac2 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.ora9i.db application ONLINE ONLINE rac1
ora....i1.inst application ONLINE ONLINE rac1
ora....i2.inst application ONLINE ONLINE rac2
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE ONLINE rac1
ora.rac1.gsd application ONLINE ONLINE rac1
ora.rac1.ons application ONLINE ONLINE rac1
ora.rac1.vip application ONLINE ONLINE rac1
ora....SM2.asm application ONLINE ONLINE rac2
ora....C2.lsnr application ONLINE ONLINE rac2
ora.rac2.gsd application ONLINE ONLINE rac2
ora.rac2.ons application ONLINE ONLINE rac2
ora.rac2.vip application ONLINE ONLINE rac2
总结：在rac环境中如果使用crs_stop -all去停rac服务时，很有可能会出现crs中的一些服务的状态是UNKNOWN，这时我们可以采用两种方法去重新启动crs
首先尝试 crs_stop
1：转换到root用户下用/etc/init.d/init.crs stop先禁用crs，然后再用/etc/init.d/init.crs start去启用crs，启用crs后会自动启动crs的一系列服务，注意此种方法需要在两台节点上都执行；
2：是用crs_stop -f 参数把crs中状态是UNKNOWN的服务关掉，然后再用crs_start -f （加一个-f的参数）启动所有的服务就可以。
要分别在两个节点上执行；
在启动的过程中最好检测着crs、ASM和数据库的日志：
crs日志：
[oracle@rac1 ~]$ tail -f /u01/app/oracle/product/10.2.0/crs_1/log/rac1/alertrac1.log
[oracle@rac2 ~]$ tail -f /u01/app/oracle/product/10.2.0/crs_1/log/rac2/alertrac2.log
ASM日志：
[oracle@rac1 ~]$ tail -f /u01/app/oracle/admin/+ASM/bdump/alert_+ASM1.log
[oracle@rac2 ~]$ tail -f /u01/app/oracle/admin/+ASM/bdump/alert_+ASM2.log
数据库日志：
[oracle@rac1 ~]$ tail -f /u01/app/oracle/admin/ora9i/bdump/alert_ora9i1.log
[oracle@rac2 ~]$ tail -f /u01/app/oracle/admin/ora9i/bdump/alert_ora9i2.log