9_2_Deleting Node from Oracle RAC.txt

--Ensure that Grid_home correctly specifies the full directory path for the Oracle Clusterware home on each node
$ . grid_env
$ echo $ORACLE_HOME


--Determine whether the node you want to delete is active and whether it is pinned:
$ olsnodes -s -t

--If the node is pinned, then run
$ crsctl unpin css

--status of database
$ srvctl status database -db racdb

--stop instance
$ srvctl stop instance -db racdb -i racdb2

--remove instance
$ srvctl remove instance -db racdb -i racdb2

--Disable and stop listener before deleting the Oracle RAC software. Run the following commands on any node in the cluster
$ srvctl disable listener -l listener -n rac2
$ srvctl stop listener -l listener -n rac2

--Deinstall the Oracle Clusterware home from rac2
$ cd /u01/app/12.2.0.1/grid/deinstall
$ . deinstall -local

--when prompted run
-- /u01/app/12.2.0.1/grid/crs/install/rootcrs.sh -force  -deconfig -paramfile "/tmp/deinstall2019-04-03_06-05-27PM/response/deinstall_OraGI12Home1.rsp"

--Run the following command from rac1 as root to delete the node from the cluster
$ su root
$ cd /u01/app/12.2.0.1/grid/bin
$ crsctl delete node -n rac2

--exit from root

--Verify the node have been successfully deleted from the cluster on rac1
$ cluvfy stage -post nodedel -n rac2


--Determine whether the VIP for rac2 still exists on rac1
$ srvctl config vip -node rac2

--If the VIP still exists, then delete it
$ srvctl stop vip -node rac2
$ srvctl remove vip -node rac2


--Remove the database home from rac2
$ cd /u01/app/oracle/product/12.2.0.1/db_1/deinstall
$ . deinstall -local