srvctl commands

To start and stop database in all nodes with single command
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[oracle@rtmrac1 ~]$ ps -ef|grep smon
oracle     2845      1  0 08:44 ?        00:00:00 asm_smon_+ASM1
root       2907      1  2 08:44 ?        00:00:12 /u01/app/12.1.0/grid/bin/osysmond.bin
oracle    10556      1  0 08:48 ?        00:00:00 ora_smon_orcl1
[oracle@rtmrac1 ~]$ . oraenv
ORACLE_SID = [orcl1] ? +ASM1
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@rtmrac1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rtmrac1
Instance orcl2 is running on node rtmrac2
[oracle@rtmrac1 ~]$ srvctl stop database -d orcl
[oracle@rtmrac1 ~]$ srvctl status database -d orcl
Instance orcl1 is not running on node rtmrac1
Instance orcl2 is not running on node rtmrac2
[oracle@rtmrac1 ~]$ srvctl start database -d orcl
[oracle@rtmrac1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rtmrac1
Instance orcl2 is running on node rtmrac2

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To stop/start database instance in one node:
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[oracle@rtmrac1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rtmrac1
Instance orcl2 is running on node rtmrac2
[oracle@rtmrac1 ~]$ srvctl stop instance -i orcl2 -d orcl
[oracle@rtmrac2 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rtmrac1
Instance orcl2 is not running on node rtmrac2

[oracle@rtmrac1 ~]$ srvctl start instance -i orcl2 -d orcl
[oracle@rtmrac1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rtmrac1
Instance orcl2 is running on node rtmrac2

stop/start ASM instance in one instance.

srvctl stop asm -n <node_name>

--to stop with force

srvctl stop asm -n <node_name> -f

--starting ASM instance

srvctl start asm -n <node name>

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To stop ASM in one node: Example
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[oracle@rtmrac2 ~]$ ps -ef|grep pmon
oracle     2367      1  0 08:44 ?        00:00:00 asm_pmon_+ASM2
oracle    22998      1  0 09:14 ?        00:00:00 ora_pmon_orcl2
oracle    24664  24610  0 09:16 pts/1    00:00:00 grep --color=auto pmon
[oracle@rtmrac2 ~]$ . oraenv
ORACLE_SID = [oracle] ? +ASM2
The Oracle base has been set to /u01/app/oracle
[oracle@rtmrac2 ~]$ srvctl stop instance -i orcl2 -d orcl
[oracle@rtmrac2 ~]$ ps -ef|grep pmon
oracle     2367      1  0 08:44 ?        00:00:00 asm_pmon_+ASM2
oracle    25367  24610  0 09:19 pts/1    00:00:00 grep --color=auto pmon
[oracle@rtmrac2 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rtmrac1
Instance orcl2 is not running on node rtmrac2
[oracle@rtmrac2 ~]$ srvctl status asm
ASM is running on rtmrac2,rtmrac1
[oracle@rtmrac2 ~]$ srvctl stop asm -n rtmrac2
PRCR-1014 : Failed to stop resource ora.asm
PRCR-1065 : Failed to stop resource ora.asm
CRS-2529: Unable to act on 'ora.asm' because that would require stopping or relocating 'ora.DATA.dg', but the force option was not specified
[oracle@rtmrac2 ~]$ srvctl stop asm -n rtmrac2 -f
[oracle@rtmrac2 ~]$ srvctl status asm
ASM is running on rtmrac1
[oracle@rtmrac2 ~]$ ps -ef|grep pmon
oracle    26471  24610  0 09:21 pts/1    00:00:00 grep --color=auto pmon
[oracle@rtmrac2 ~]$ srvctl start asm -n rtmrac2
[oracle@rtmrac2 ~]$ srvctl status asm
ASM is running on rtmrac2,rtmrac1
[oracle@rtmrac2 ~]$ ps -ef|grep pmon
oracle    27242      1  0 09:24 ?        00:00:00 asm_pmon_+ASM2
oracle    27400  24610  0 09:24 pts/1    00:00:00 grep --color=auto pmon
[oracle@rtmrac2 ~]$ srvctl start instance -i orcl2 -d orcl
[oracle@rtmrac2 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rtmrac1
Instance orcl2 is running on node rtmrac2

----if you get error as bellow while starting ASM

[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>

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If you want to add database to HA(grid instrastructure):
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ex:
srvctl add database -d orcl -o /opt/oracle/product/12.2.0.1/dbhome_1 -p +DATA//PARAMETERFILE/spfile.644.1041511849
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modify the database startup option (mount/open).
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if you set mount, if server is restarted database will open in mount mode.

srvctl modify database -db ORCL -startoption MOUNT