oracle 19c rac 卸载

1、节点1操作（root操作)：

su - grid
su
cd $ORACLE_HOME/deinstall/
./deinstall
....
he deconfig command below can be executed in parallel on all the remote nodes. Execute the command on the local node after the execution completes on all the remote nodes.

Run the following command as the root user or the administrator on node "rac2".

/u01/app/19.0.0/grid/crs/install/rootcrs.sh -force -deconfig -paramfile "/tmp/deinstall2020-10-28_08-54-54AM/response/deinstall_OraGI19Home1.rsp"

Run the following command as the root user or the administrator on node "rac1".

/u01/app/19.0.0/grid/crs/install/rootcrs.sh -force -deconfig -paramfile "/tmp/deinstall2020-10-28_08-54-54AM/response/deinstall_OraGI19Home1.rsp" -lastnode

Press Enter after you finish running the above commands //记得执行完最后一个节点的命令再回车

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2、卸载database软件

oracle用户执行deinstall
$ORACLE_HOME/deinstall/deinstall