Os Redhat 7.9
Oracle 12.2.0.1

1 跑root.sh前先打补丁
gridSetup.sh -applyPSU /temp/32484031

2 安装过程报错tcp连接问题
查IP配置是否正确，关闭防火墙， 重启ssd
遇到X11Forwarding以及TCP/IP问题
重启sshd.service
systemctl restart sshd.service

3 个节点root.sh报错
CRS-4123: Oracle High Availability Services has been started.
2021/03/10 17:37:57 CLSRSC-343: Successfully started Oracle Clusterware stack
2021/03/10 17:37:57 CLSRSC-594: Executing installation step 18 of 19: 'ConfigNode'.
2021/03/10 17:38:00 CLSRSC-594: Executing installation step 19 of 19: 'PostConfig'.
2021/03/10 17:43:34 CLSRSC-614: failed to get the list of configured diskgroups
Died at /grid/12.2/crs/install/oraasm.pm line 2069.
The command '/grid/12.2/perl/bin/perl -I/grid/12.2/perl/lib -I/grid/12.2/crs/install /grid/12.2/crs/install/rootcrs.pl ' execution failed
我们前面打了新的PSU问题没有解决，咨询Oracle原厂定位bug 31774090

解决方法
咨询Oracle原厂，建议如下编译：
[root@n-pc-x3650m5-108 ~]#export ORACLE_HOME=/grid/12.2
[root@n-pc-x3650m5-108 ~]#cd /grid/12.2/rdbms/lib
[root@n-pc-x3650m5-108 /grid/12.2/rdbms/lib]#/usr/bin/make -f ins_rdbms.mk client_sharedlib libasmclntsh12.ohso libasmperl12.ohso ORACLE_HOME=$ORACLE_HOME


4 文件加密
注意TDE加密后，使用strings验证没有意义