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disaster classification
physical failure
datafile,controfile,redo log
logical mistake
object
physical disaster situation
mount or open
non-system tablespace
undo tbs
nomount
controlfile,all database file
mount
system tablespace
online redo log file
non-system tbs
alter datafile offline
alter tablespace offline
restore&recover
revert datafile online
crosscheck backupset;
list backupset summary;
validate backupset 860,953,1080,1081,1110;
validate backupset 860,953,1080,1081,1110 check logical;
non-system tbs 非系统表空间和数据文件恢复
rm -f users.dbf
alter database datafile 5 online;
run {
allocate channel d1 device type disk;
sql "alter database datafile 4 offline";
restore datafile 4;
recover datafile 4;
sql "alter database datafile 4 online;
}
undo表空间恢复与还原 必要让数据库知道undo不能用了
alter datafile 2 online
alter datafile 2 offline
rman中undo表空间不能offline
run {
allocate channel d1 device type disk;
restore datafile 2;
recover datafile 2;
}
在sqlplus中
select status from v$datafile
recover datafile 2;
alter database datafile 2 online;
system tbs 系统表空间恢复
startup mount
restore datafile 1;
recover datafile 1;
alter database open;
rm -f system01.dbf
startup mount force;
run {
allocate channel d1 device type disk;
restore datafile 1;
recover datafile 1;
sql "alter database open";
}
select open_mode from v$database;
controlfile 控制文件恢复
startup target with nomount
connect to catalog and target
restore controlfile,recover database
alter database open resetlogs or noresetlogs
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