----check the backup is disabled in crontab, this we need to do before starting the backup.


----stop database instance.
srvctl stop instance -i <instance_name>  -d <database_name>  -f
srvctl stop asm -n <node_name> -f

----start asm instance as bellow

srvctl start asm -n <node name>

----if you get error as bellow

[oracle@SDBORN21 ~]$ srvctl start asm -n SDBORN21
PRCR-1070 : Failed to check if resource ora.asm is registered
Cannot communicate with crsd

----follow as bellow

crsctl stat res -t -init

----check  ora.asm and ora.crsd are OFFLINE

crsctl start res ora.asm -init
crsctl start res ora.crsd -init

----if above commands succeeded then ASM must be up

ps -ef|grep pmon

----start database instance

srvctl start instance -i <instance_name>  -d <database_name>