一、中止服务sql
首先使用命令lsnrctl stop数据库
然后运行oracle
sql conn/as sysdbaflash
配置SQL关闭
二、显示实例流程，删除grep
find $ Oracle _ base/- name $ Oracle _ sid
/mnt/installer/Oracle/flash _ recovery _ area/orcl
/mnt/installer/Oracle/oradata/orcl
/mnt/installer/Oracle/diag/RDBMS/orcl
/mnt/installer/Oracle/diag/RDBMS/orcl/orcl
/mnt/installer/Oracle/admin/orcl
/mnt/installer/Oracle/cfgtoollogs/dbca/orcl top
[ Oracle @ rt1d 20/] $ RM-RF/mnt/installer/Oracle/flash _ recovery _ area/orcl /
[ Oracle @ rt1d 20/] $ RM-RF/mnt/installer/Oracle/oradata/orcl /
[ Oracle @ rt1d 20/] $ RM-RF/mnt/installer/Oracle/diag/RDBMS/orcl /
[ Oracle @ rt1d 20/] $ RM-RF/mnt/installer/Oracle/admin/orcl /
[ Oracle @ rt1d 20/] $ RM-RF/mnt/installer/Oracle/cfgtoollogs/dbca/orcl /
数据库
find $ Oracle _ base/*-name ' * [ bb ] [ TT ] [ ss ] [ bb ]2* '|grep-vadmin|grep-v oradata
如果没有就跳过
$ cd mnt/installer/oracle/
$ ll
dwxr----2Oracle oinstall 4096 Jan 816336050 admin
rwxr-xr-x4 Oracle oinstall 4096 Jan 723:12 cfgtoollogs
rwxr-xr-x2 Oracle oinstall 4096 Jan 723:15检查点
drwxrwxr-x4 Oracle oinstall 4096 Jan 72:12诊断程序
drwxr----3Oracle oinstall 4096 Jan 816:49 flash _ recovery _ area
dwxr----2Oracle oinstall 4096 Jan 816336049 oradata
rwx rwx----5Oracle oinstall 4096 Jan 721:06 ora inventory
dwxr-xr-x3Oracle oinstall 4096 Jan 721:03 product
[ Oracle @ rt1d 20 Oracle ] $ RM-RF admin /
[ Oracle @ rt1d 20 Oracle ] $ RM-RF flash _ recovery _ area /
[ Oracle @ rt1d 20 Oracle ] $ RM-RF oradata /
三.删除旧实例配置项目
vi etc/oratab
删除最后一行： orcl :/mnt/installer/Oracle/product/11.2.0/db _ 13360 n
最后，新静默安装数据库实例