1.查看当前DB环境[root@node01~]#cat/etc/redhat-releaseRedHatEnterpriseLinuxrelease8.5(Ootpa)[root@node01~]#su-oracle[oracle@node01~]$sqlplus-VSQL*Plus:Release19.0.0.0.0-ProductionVersion19.3.0.0.0[oracle@node01~]$sqlplus/assysdbaSQL*Plus:Release19.0.0...(more)