UNKNOWN State Of RAC Resources

Sometimes when you check Oracle Cluster Status Via "crs_stat -t" :

------------------------------------------------------------
ora.orcl.db    application    ONLINE    ONLINE    rac1
ora....11.inst application    ONLINE    ONLINE    rac1
ora....SM1.asm application    ONLINE    ONLINE    rac1
ora....DC.lsnr application    ONLINE    ONLINE    rac1
ora....idc.gsd application    ONLINE    ONLINE    rac1
ora....idc.ons application    ONLINE    ONLINE    rac1
ora....idc.vip application    ONLINE    ONLINE    rac1
ora....SM2.asm application    ONLINE    UNKNOWN   rac2
ora....C2.lsnr application    ONLINE    ONLINE    rac2
ora....dc2.gsd application    ONLINE    ONLINE    rac2
ora....dc2.ons application    ONLINE    ONLINE    rac2
ora....dc2.vip application    ONLINE    ONLINE    rac2


If You try to restart Oracle Cluster via

./crs_stop -all
./crs_start -all
It will not working so you have to do the following simple steps :

 First :

crs_stop -f Service_name
 
Example :
crs_stop -f ora.rac2.ASM2.asm 
 Second :

crs_start -f services_name

Example :
crs_start -f ora.rac2.ASM2.asm 


Thank you
Osama

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