[root@cogni01 disks]# ps -ef |grep pmon
oracle 5422 1 0 13:12 ? 00:00:00 asm_pmon_+ASM1
oracle 6442 1 0 13:13 ? 00:00:00 mdb_pmon_-MGMTDB
oracle 12510 1 0 13:19 ? 00:00:00 ora_pmon_lmnx1
root 20892 4763 0 13:35 pts/0 00:00:00 grep --color=auto pmon
[root@cogni01 disks]# free -m
total used free shared buff/cache available
Mem: 4900 2793 42 1241 2065 687
Swap: 5119 1190 3929
[root@cogni01 disks]# crsctl stop res ora.crf -init
bash: crsctl: command not found...
[root@cogni01 disks]# . oraenv
ORACLE_SID = [root] ? +ASM1
The Oracle base has been set to /u01/app/oracle
[root@cogni01 disks]# crsctl stop res ora.crf -init
CRS-2673: Attempting to stop 'ora.crf' on 'cogni01'
CRS-2677: Stop of 'ora.crf' on 'cogni01' succeeded
[root@cogni01 disks]# ps -ef |grep pmon
oracle 5422 1 0 13:12 ? 00:00:00 asm_pmon_+ASM1
oracle 6442 1 0 13:13 ? 00:00:00 mdb_pmon_-MGMTDB
oracle 12510 1 0 13:19 ? 00:00:00 ora_pmon_lmnx1
root 22957 4763 0 13:38 pts/0 00:00:00 grep --color=auto pmon
[root@cogni01 disks]#
[root@cogni01 disks]#
[root@cogni01 disks]# crsctl modify res ora.crf -attr ENABLED=0 -init
[root@cogni01 disks]# crsctl status res ora.crf -init
NAME=ora.crf
TYPE=ora.crf.type
TARGET=OFFLINE
STATE=OFFLINE
[root@cogni01 disks]# cd $ORACLE_HOME/bin
[root@cogni01 bin]# dbca -silent -deleteDatabase -sourceDB -MGMTDB
DBCA cannot be run as root.
[root@cogni01 bin]# su - oracle
Last login: Sun Jun 20 13:34:32 IST 2021
[oracle@cogni01 ~]$
[oracle@cogni01 ~]$ . oraenv
ORACLE_SID = [cdbrac1] ? +ASM1
The Oracle base remains unchanged with value /u01/app/oracle
[oracle@cogni01 ~]$ cd $ORACLE_HOME/bin
[oracle@cogni01 bin]$ dbca -silent -deleteDatabase -sourceDB -MGMTDB
Connecting to database
4% complete
9% complete
14% complete
19% complete
23% complete
28% complete
47% complete
Updating network configuration files
52% complete
