请注意，本文编写于 781 天前，最后修改于 747 天前，其中某些信息可能已经过时。
场景一： 使用0级备份 恢复数据库
需要0级备份+0级备份期间产生的归档日志
场景二： 使用0级+1级备份 恢复数据库
需要0级备份+1级备份+1级备份期间产生的归档日志
场景三： 使用0级+归档 备份恢复数据库
场景四： 完全恢复
场景五： 异机恢复常用命令
备份
1 启动归档
[oracle@chendb ~]$ sqlplus / as sysdba
SQL> alter system set log_archive_dest_1='location=/arch';
SQL> alter system set log_archive_format = "chendb_%t_%s_%r.arc" scope=spfile;
SQL> shutdown immediate;
SQL> startup mount;
SQL> alter database archivelog;
SQL> alter database open;
SQL> archive log list;2 创建测试数据
SQL> conn cjc/***
SQL>
create table t1(id number,ttime varchar2(100));
CREATE OR REPLACE PROCEDURE test_pro is
begin
for i in 1 .. 10 loop
insert into t1 values (i, to_char(sysdate, 'yyyy/mm/dd hh24:mi:ss'));
commit;
end loop;
end;
/3 创建0级备份脚本
[oracle@cjcos01 script]$ vim /rmanbak/script/0_rmanbak.sh
###0_rmanbak.sh begin###
export NLS_DATE_FORMAT='yyyy-mm-dd hh24:mi:ss'
export ORACLE_SID=chendb
rman target / log=/rmanbak/db/0_rmanbak.log <<EOF
run{
allocate channel ch1 type disk maxpiecesize 1000M;
allocate channel ch2 type disk maxpiecesize 1000M;
backup incremental level = 0
filesperset = 32
format '/rmanbak/db/lev0_%d_%T_%U.bak'
skip inaccessible database
include current controlfile
tag '0_rmanbak_cjcdb' ;
release channel ch1;
release channel ch2;
}
EOF
exit
###0_rmanbak.sh end###执行0级备份
[oracle@cjcos01 script]$ chmod a+x 0_rmanbak.sh
[oracle@cjcos01 script]$ ./0_rmanbak.sh执行备份期间，生成测试数据，切换归档日志
SQL> conn cjc/***
SQL> exec test_pro();
SQL> create table t2 as select * from t1;
SQL> alter system switch logfile;4 创建1级备份
[oracle@cjcos01 script]$ cat 1_rmanbak.sh
###1_rmanbak.sh begin###
export NLS_DATE_FORMAT='yyyy-mm-dd hh24:mi:ss'
export ORACLE_SID=chendb
rman target / log=/rmanbak/db/1_rmanbak.log <<EOF
run{
allocate channel ch1 type disk maxpiecesize 1000M;
allocate channel ch2 type disk maxpiecesize 1000M;
backup incremental level = 1
filesperset = 32
format '/rmanbak/db/lev1_%d_%T_%U.bak'
skip inaccessible database
include current controlfile
tag '1_rmanbak_cjcdb' ;
release channel ch1;
release channel ch2;
}
EOF
exit
###1_rmanbak.sh end###执行1级备份
[oracle@cjcos01 script]$ chmod a+x 1_rmanbak.sh
[oracle@cjcos01 script]$ ./1_rmanbak.sh执行备份期间，生成测试数据，切换归档日志
SQL> conn cjc/***
SQL> exec test_pro();
SQL> create table t3 as select * from t2;
SQL> alter system switch logfile;5 执行归档备份
[oracle@cjcos01 script]$ cat arch_rmanbak.sh
###arch_rmanbak.sh begin###
export NLS_DATE_FORMAT='yyyy-mm-dd hh24:mi:ss'
export ORACLE_SID=chendb
rman target / log=/rmanbak/db/arch_rmanbak.log <<EOF
run{
allocate channel ch1 type disk maxpiecesize 1000M;
allocate channel ch2 type disk maxpiecesize 1000M;
sql "alter system archive log current";
backup
filesperset = 32
format '/rmanbak/db/arch_%d_%T_%U.bak'
skip inaccessible
archivelog all delete input
tag 'arch_cjcdb';
backup format='/rmandata/db/ctl_%d_%T_%U.ctl' current controlfile ;
release channel ch1;
release channel ch2;
}
EOF
exit
###arch_rmanbak.sh end###执行归档备份
[oracle@cjcos01 script]$ ./arch_rmanbak.sh
SQL> create table t5 as select *from t1;查看备份信息
SQL>
alter session set nls_date_format='yyyymmdd hh24:mi:ss';
col tag for a20
set lin 200 pages 200
col handle for a50
col SIZE_BYTES_DISPLAY for a10
select BS.RECID,BS.START_TIME,BS.PIECES,BS.INCREMENTAL_LEVEL,BS.BACKUP_TYPE,BP.PIECE#,BP.HANDLE,BP.TAG,BP.STATUS,ROUND(BP.bytes/1024/1024/1024,2) gb
from v$backup_set bs,v$backup_piece bp
where
bs.recid=bp.recid;
RECID START_TIME PIECES INCREMENTAL_LEVEL BPIECE# HANDLE TAG S GB
---------- ----------------- ---------- ----------------- - ---------- -------------------------------------------------- -------------------- - ----------
1 20200801 14:31:54 1 0 D 1 /rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak 0_RMANBAK_CJCDB A.41
2 20200801 14:31:54 1 0 D 1 /rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak 0_RMANBAK_CJCDB A.73
3 20200801 14:33:30 1 0 D 1 /rmanbak/db/lev0_CHENDB_20200801_04v6p8hq_1_1.bak 0_RMANBAK_CJCDB A 0
4 20200801 14:33:23 1 0 D 1 /rmanbak/db/lev0_CHENDB_20200801_03v6p8hj_1_1.bak 0_RMANBAK_CJCDB A.01
5 20200801 15:07:32 1 1 I 1 /rmanbak/db/lev1_CHENDB_20200801_06v6pahk_1_1.bak 1_RMANBAK_CJCDB A 0
6 20200801 15:07:32 1 1 I 1 /rmanbak/db/lev1_CHENDB_20200801_05v6pahk_1_1.bak 1_RMANBAK_CJCDB A 0
7 20200801 15:08:49 1 1 I 1 /rmanbak/db/lev1_CHENDB_20200801_08v6pak1_1_1.bak 1_RMANBAK_CJCDB A 0
8 20200801 15:08:48 1 1 I 1 /rmanbak/db/lev1_CHENDB_20200801_07v6pak0_1_1.bak 1_RMANBAK_CJCDB A.01
9 20200801 15:13:26 1 L 1 /rmanbak/db/arch_CHENDB_20200801_09v6pasm_1_1.bak ARCH_CJCDB A.51
10 20200801 15:13:26 1 L 1 /rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak ARCH_CJCDB A.45
11 20200801 15:14:12 1 L 1 /rmanbak/db/arch_CHENDB_20200801_0bv6pau4_1_1.bak ARCH_CJCDB A 0
12 20200801 15:14:14 1 D 1 /rmandata/db/ctl_CHENDB_20200801_0cv6pau6_1_1.ctl TAG20200801T151414 A.01
12 rows selectedBACKUP\_TYPE:
Type of files that are in this backup.
If the backup contains archived redo logs, the value is L.
If this is a datafile full backup, the value is D.
If this is an incremental backup, the value is I.
查看备份信息
[oracle@cjcos01 script]$ export NLS_DATE_FORMAT='YYYYMMDD HH24:MI:SS'
[oracle@cjcos01 script]$ rman target /
Recovery Manager: Release 11.2.0.4.0 - Production on Sat Aug 1 15:24:20 2020
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: CHENDB (DBID=1831901477)
RMAN> list backup summary;
using target database control file instead of recovery catalog
List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
------- -- -- - ----------- ----------------- ------- ------- ---------- ---
1 B 0 A DISK 20200801 14:33:06 1 1 NO 0_RMANBAK_CJCDB
2 B 0 A DISK 20200801 14:33:26 1 1 NO 0_RMANBAK_CJCDB
3 B 0 A DISK 20200801 14:33:30 1 1 NO 0_RMANBAK_CJCDB
4 B 0 A DISK 20200801 14:33:31 1 1 NO 0_RMANBAK_CJCDB
5 B 1 A DISK 20200801 15:08:41 1 1 NO 1_RMANBAK_CJCDB
6 B 1 A DISK 20200801 15:08:48 1 1 NO 1_RMANBAK_CJCDB
7 B 1 A DISK 20200801 15:08:49 1 1 NO 1_RMANBAK_CJCDB
8 B 1 A DISK 20200801 15:08:50 1 1 NO 1_RMANBAK_CJCDB
9 B A A DISK 20200801 15:14:07 1 1 NO ARCH_CJCDB
10 B A A DISK 20200801 15:14:08 1 1 NO ARCH_CJCDB
11 B A A DISK 20200801 15:14:13 1 1 NO ARCH_CJCDB
12 B F A DISK 20200801 15:14:15 1 1 NO TAG20200801T151414恢复
场景一：使用0级备份恢复数据库
手动将增量和归档备份设置失效，测试只有0级备份进行恢复数据库
---生成unavailable脚本
SQL> set pagesize 2000
SQL> set heading off
SQL> spool /home/oracle/unavailable.log
SQL>
select 'change backupset '||BS.RECID||' unavailable;'
from v$backup_set bs,v$backup_piece bp
where
bs.recid=bp.recid
and BS.BACKUP_TYPE!='D'
SQL>spool off
'CHANGEBACKUPSET'||BS.RECID||'UNAVAILABLE;'
----------------------------------------------------------------------
change backupset 5 unavailable;
change backupset 6 unavailable;
change backupset 7 unavailable;
change backupset 8 unavailable;
change backupset 9 unavailable;
change backupset 10 unavailable;
change backupset 11 unavailable;
RMAN>
change backupset 5 unavailable;
change backupset 6 unavailable;
change backupset 7 unavailable;
change backupset 8 unavailable;
change backupset 9 unavailable;
change backupset 10 unavailable;
change backupset 11 unavailable;查看状态，5-12备份集已经失效
RMAN> list backup summary;
List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
------- -- -- - ----------- ----------------- ------- ------- ---------- ---
1 B 0 A DISK 20200801 14:33:06 1 1 NO 0_RMANBAK_CJCDB
2 B 0 A DISK 20200801 14:33:26 1 1 NO 0_RMANBAK_CJCDB
3 B 0 A DISK 20200801 14:33:30 1 1 NO 0_RMANBAK_CJCDB
4 B 0 A DISK 20200801 14:33:31 1 1 NO 0_RMANBAK_CJCDB
5 B 1 U DISK 20200801 15:08:41 1 1 NO 1_RMANBAK_CJCDB
6 B 1 U DISK 20200801 15:08:48 1 1 NO 1_RMANBAK_CJCDB
7 B 1 U DISK 20200801 15:08:49 1 1 NO 1_RMANBAK_CJCDB
8 B 1 U DISK 20200801 15:08:50 1 1 NO 1_RMANBAK_CJCDB
9 B A U DISK 20200801 15:14:07 1 1 NO ARCH_CJCDB
10 B A U DISK 20200801 15:14:08 1 1 NO ARCH_CJCDB
11 B A U DISK 20200801 15:14:13 1 1 NO ARCH_CJCDB
12 B F A DISK 20200801 15:14:15 1 1 NO TAG20200801T1514140级恢复
SQL> shutdown immediate冷备
[oracle@cjcos01 oradata]$ pwd
/u01/app/oracle11/oradata
[oracle@cjcos01 oradata]$ cp chendb chendb_0801bak -r
SQL> startup mount开始0级恢复
默认执行完全恢复，归档备份已经设置失效，所有会提示找不到归档
RMAN>
run{
allocate channel d1 type disk;
restore database;
recover database;
release channel d1;
}恢复日志如下：
using target database control file instead of recovery catalog
allocated channel: d1
channel d1: SID=20 device type=DISK
Starting restore at 20200801 15:30:43
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00002 to /u01/app/oracle11/oradata/chendb/sysaux01.dbf
channel d1: restoring datafile 00004 to /u01/app/oracle11/oradata/chendb/users01.dbf
channel d1: restoring datafile 00006 to /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:01:05
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00001 to /u01/app/oracle11/oradata/chendb/system01.dbf
channel d1: restoring datafile 00003 to /u01/app/oracle11/oradata/chendb/undotbs01.dbf
channel d1: restoring datafile 00005 to /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:01:15
Finished restore at 20200801 15:33:04
Starting recover at 20200801 15:33:05
starting media recovery
released channel: d1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 08/01/2020 15:33:06
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of archived log for thread 1 with sequence 39 and starting SCN of 2280954 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 38 and starting SCN of 2280793 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 37 and starting SCN of 2280705 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 36 and starting SCN of 2278640 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 35 and starting SCN of 2278619 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 34 and starting SCN of 2277662 found to restore查看控制文件记录的数据文件scn
SQL> select file#,checkpoint_change# from v$datafile;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 2281863
2 2281863
3 2281863
4 2281863
5 2281863
6 2281863
6 rows selected.查看数据文件头记录的SCN
SQL> select file#,checkpoint_change# from v$datafile_header;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 2278590
2 2278591
3 2278590
4 2278591
5 2278590
6 2278591
6 rows selected.0级别恢复，执行不完全恢复，恢复到数据文件头最大的scn
RMAN>
run{
allocate channel d1 type disk;
restore database until scn 2278591;
recover database until scn 2278591;
release channel d1;
}
released channel: d1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 08/01/2020 15:41:12
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of archived log for thread 1 with sequence 34 and starting SCN of 2277662 found to restore提示恢复需要34号归档文件，查看34号归档所在备份集
RMAN> list backupset of archivelog sequence 34;
List of Backup Sets
===================
BS Key Size Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ -----------------
10 463.58M DISK 00:00:42 20200801 15:14:08
BP Key: 10 Status: AVAILABLE Compressed: NO Tag: ARCH_CJCDB
Piece Name: /rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak
List of Archived Logs in backup set 10
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- ----------------- ---------- ---------
1 34 2277662 20200801 14:16:55 2278619 20200801 14:32:15手动将10号备份置为有效
RMAN> change backupset 10 available;
using channel ORA_DISK_1
changed backup piece available
backup piece handle=/rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak RECID=10 STAMP=1047309207
Changed 1 objects to AVAILABLE status解压出34号归档文件
RMAN> restore archivelog sequence 34;
Starting restore at 20200801 15:46:11
using channel ORA_DISK_1
channel ORA_DISK_1: starting archived log restore to default destination
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=34
channel ORA_DISK_1: reading from backup piece /rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak
channel ORA_DISK_1: piece handle=/rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak tag=ARCH_CJCDB
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:07
Finished restore at 20200801 15:46:18
[oracle@cjcos01 db]$ ls /arch/
chendb_1_34_1042210216.arc再次执行恢复
此次使用了0级备份+34号归档 完成了恢复
RMAN>
run{
allocate channel d1 type disk;
restore database until scn 2278591;
recover database until scn 2278591;
release channel d1;
}
released channel: ORA_DISK_1
allocated channel: d1
channel d1: SID=20 device type=DISK
Starting restore at 20200801 15:47:12
skipping datafile 1; already restored to file /u01/app/oracle11/oradata/chendb/system01.dbf
skipping datafile 3; already restored to file /u01/app/oracle11/oradata/chendb/undotbs01.dbf
skipping datafile 5; already restored to file /u01/app/oracle11/oradata/chendb/example01.dbf
skipping datafile 2; already restored to file /u01/app/oracle11/oradata/chendb/sysaux01.dbf
skipping datafile 4; already restored to file /u01/app/oracle11/oradata/chendb/users01.dbf
skipping datafile 6; already restored to file /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
restore not done; all files read only, offline, or already restored
Finished restore at 20200801 15:47:12
Starting recover at 20200801 15:47:12
starting media recovery
archived log for thread 1 with sequence 34 is already on disk as file /arch/chendb_1_34_1042210216.arc
archived log file name=/arch/chendb_1_34_1042210216.arc thread=1 sequence=34
media recovery complete, elapsed time: 00:00:00
Finished recover at 20200801 15:47:12
released channel: d1恢复成功
查看当前数据文件scn
SQL> select file#,checkpoint_change# from v$datafile_header;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 2278591
2 2278591
3 2278591
4 2278591
5 2278591
6 2278591
6 rows selected.场景二：使用0级+1级备份 恢复数据库
将增量备份设置为有效
RMAN>
change backupset 5 available;
change backupset 6 available;
change backupset 7 available;
change backupset 8 available;查看备份状态
RMAN> list backup summary;
List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
------- -- -- - ----------- ----------------- ------- ------- ---------- ---
1 B 0 A DISK 20200801 14:33:06 1 1 NO 0_RMANBAK_CJCDB
2 B 0 A DISK 20200801 14:33:26 1 1 NO 0_RMANBAK_CJCDB
3 B 0 A DISK 20200801 14:33:30 1 1 NO 0_RMANBAK_CJCDB
4 B 0 A DISK 20200801 14:33:31 1 1 NO 0_RMANBAK_CJCDB
5 B 1 A DISK 20200801 15:08:41 1 1 NO 1_RMANBAK_CJCDB
6 B 1 A DISK 20200801 15:08:48 1 1 NO 1_RMANBAK_CJCDB
7 B 1 A DISK 20200801 15:08:49 1 1 NO 1_RMANBAK_CJCDB
8 B 1 A DISK 20200801 15:08:50 1 1 NO 1_RMANBAK_CJCDB
9 B A U DISK 20200801 15:14:07 1 1 NO ARCH_CJCDB
10 B A U DISK 20200801 15:14:08 1 1 NO ARCH_CJCDB
11 B A U DISK 20200801 15:14:13 1 1 NO ARCH_CJCDB
12 B F A DISK 20200801 15:14:15 1 1 NO TAG20200801T151414删除解压的归档
[oracle@cjcos01 db]$ rm -rf /arch/chendb_1_34_1042210216.arc恢复冷备份
SQL> shutdown immediate
[oracle@cjcos01 oradata]$ rm -rf chendb/*
[oracle@cjcos01 oradata]$ cp chendb_0801bak/* chendb/ -r
SQL> startup mount开始0+1级恢复，默认执行完全恢复
归档备份已经设置失效，所有会提示找不到归档
RMAN>
run{
allocate channel d1 type disk;
restore database;
recover database;
release channel d1;
}
allocated channel: d1
channel d1: SID=20 device type=DISK
Starting restore at 20200801 16:15:57
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00002 to /u01/app/oracle11/oradata/chendb/sysaux01.dbf
channel d1: restoring datafile 00004 to /u01/app/oracle11/oradata/chendb/users01.dbf
channel d1: restoring datafile 00006 to /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:25
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00001 to /u01/app/oracle11/oradata/chendb/system01.dbf
channel d1: restoring datafile 00003 to /u01/app/oracle11/oradata/chendb/undotbs01.dbf
channel d1: restoring datafile 00005 to /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:35
Finished restore at 20200801 16:16:58
Starting recover at 20200801 16:16:58
channel d1: starting incremental datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00002: /u01/app/oracle11/oradata/chendb/sysaux01.dbf
destination for restore of datafile 00004: /u01/app/oracle11/oradata/chendb/users01.dbf
destination for restore of datafile 00006: /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev1_CHENDB_20200801_06v6pahk_1_1.bak
channel d1: piece handle=/rmanbak/db/lev1_CHENDB_20200801_06v6pahk_1_1.bak tag=1_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:01
channel d1: starting incremental datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00001: /u01/app/oracle11/oradata/chendb/system01.dbf
destination for restore of datafile 00003: /u01/app/oracle11/oradata/chendb/undotbs01.dbf
destination for restore of datafile 00005: /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev1_CHENDB_20200801_05v6pahk_1_1.bak
channel d1: piece handle=/rmanbak/db/lev1_CHENDB_20200801_05v6pahk_1_1.bak tag=1_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:01
starting media recovery
released channel: d1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 08/01/2020 16:17:00
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of archived log for thread 1 with sequence 39 and starting SCN of 2280954 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 38 and starting SCN of 2280793 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 37 and starting SCN of 2280705 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 36 and starting SCN of 2278640 found to restore查看数据文件头scn
SQL> select file#,checkpoint_change# from v$datafile_header;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 2280683
2 2280684
3 2280683
4 2280684
5 2280683
6 2280684
6 rows selected.执行不完全恢复
RMAN>
run{
allocate channel d1 type disk;
###restore database until scn 2280684;
recover database until scn 2280684;
release channel d1;
}
allocated channel: d1
channel d1: SID=20 device type=DISK
Starting recover at 20200801 16:18:27
starting media recovery
released channel: d1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 08/01/2020 16:18:28
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of archived log for thread 1 with sequence 36 and starting SCN of 2278640 found to restore提示需要36号归档文件
查看sequence 36
RMAN> list backupset of archivelog sequence 36;
List of Backup Sets
===================
BS Key Size Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ -----------------
10 463.58M DISK 00:00:42 20200801 15:14:08
BP Key: 10 Status: UNAVAILABLE Compressed: NO Tag: ARCH_CJCDB
Piece Name: /rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak
List of Archived Logs in backup set 10
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- ----------------- ---------- ---------
1 36 2278640 20200801 14:33:01 2280705 20200801 15:07:56需要备份片10
RMAN> change backupset 10 available;解压归档
RMAN> restore archivelog sequence 36;
[oracle@cjcos01 chendb]$ ls /arch/
chendb_1_36_1042210216.arc恢复数据库
RMAN>
run{
allocate channel d1 type disk;
restore database until scn 2280684;
recover database until scn 2280684;
release channel d1;
}
allocated channel: d1
channel d1: SID=20 device type=DISK
Starting restore at 20200801 16:53:20
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00002 to /u01/app/oracle11/oradata/chendb/sysaux01.dbf
channel d1: restoring datafile 00004 to /u01/app/oracle11/oradata/chendb/users01.dbf
channel d1: restoring datafile 00006 to /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:25
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00001 to /u01/app/oracle11/oradata/chendb/system01.dbf
channel d1: restoring datafile 00003 to /u01/app/oracle11/oradata/chendb/undotbs01.dbf
channel d1: restoring datafile 00005 to /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:35
Finished restore at 20200801 16:54:21
Starting recover at 20200801 16:54:21
channel d1: starting incremental datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00002: /u01/app/oracle11/oradata/chendb/sysaux01.dbf
destination for restore of datafile 00004: /u01/app/oracle11/oradata/chendb/users01.dbf
destination for restore of datafile 00006: /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev1_CHENDB_20200801_06v6pahk_1_1.bak
channel d1: piece handle=/rmanbak/db/lev1_CHENDB_20200801_06v6pahk_1_1.bak tag=1_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:03
channel d1: starting incremental datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00001: /u01/app/oracle11/oradata/chendb/system01.dbf
destination for restore of datafile 00003: /u01/app/oracle11/oradata/chendb/undotbs01.dbf
destination for restore of datafile 00005: /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev1_CHENDB_20200801_05v6pahk_1_1.bak
channel d1: piece handle=/rmanbak/db/lev1_CHENDB_20200801_05v6pahk_1_1.bak tag=1_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:01
starting media recovery
archived log for thread 1 with sequence 36 is already on disk as file /arch/chendb_1_36_1042210216.arc
archived log file name=/arch/chendb_1_36_1042210216.arc thread=1 sequence=36
media recovery complete, elapsed time: 00:00:01
Finished recover at 20200801 16:54:26
released channel: d1恢复成功
SQL> select file#,checkpoint_change# from v$datafile_header;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 2280684
2 2280684
3 2280684
4 2280684
5 2280684
6 2280684
6 rows selected.场景三：使用0级+归档备份恢复数据库
设置增量备份失效
RMAN>
change backupset 5 unavailable;
change backupset 6 unavailable;
change backupset 7 unavailable;
change backupset 8 unavailable;
change backupset 9 available;
change backupset 10 available;
change backupset 11 available;查看备份状态
RMAN> list backupset summary;
List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
------- -- -- - ----------- ----------------- ------- ------- ---------- ---
1 B 0 A DISK 20200801 14:33:06 1 1 NO 0_RMANBAK_CJCDB
2 B 0 A DISK 20200801 14:33:26 1 1 NO 0_RMANBAK_CJCDB
3 B 0 A DISK 20200801 14:33:30 1 1 NO 0_RMANBAK_CJCDB
4 B 0 A DISK 20200801 14:33:31 1 1 NO 0_RMANBAK_CJCDB
5 B 1 U DISK 20200801 15:08:41 1 1 NO 1_RMANBAK_CJCDB
6 B 1 U DISK 20200801 15:08:48 1 1 NO 1_RMANBAK_CJCDB
7 B 1 U DISK 20200801 15:08:49 1 1 NO 1_RMANBAK_CJCDB
8 B 1 U DISK 20200801 15:08:50 1 1 NO 1_RMANBAK_CJCDB
9 B A A DISK 20200801 15:14:07 1 1 NO ARCH_CJCDB
10 B A A DISK 20200801 15:14:08 1 1 NO ARCH_CJCDB
11 B A A DISK 20200801 15:14:13 1 1 NO ARCH_CJCDB
12 B F A DISK 20200801 15:14:15 1 1 NO TAG20200801T151414执行完全恢复
RMAN>
run{
allocate channel d1 type disk;
restore database;
recover database;
release channel d1;
}
released channel: ORA_DISK_1
allocated channel: d1
channel d1: SID=20 device type=DISK
Starting restore at 20200801 17:12:20
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00002 to /u01/app/oracle11/oradata/chendb/sysaux01.dbf
channel d1: restoring datafile 00004 to /u01/app/oracle11/oradata/chendb/users01.dbf
channel d1: restoring datafile 00006 to /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:25
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00001 to /u01/app/oracle11/oradata/chendb/system01.dbf
channel d1: restoring datafile 00003 to /u01/app/oracle11/oradata/chendb/undotbs01.dbf
channel d1: restoring datafile 00005 to /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:35
Finished restore at 20200801 17:13:20
Starting recover at 20200801 17:13:20
starting media recovery
archived log for thread 1 with sequence 36 is already on disk as file /arch/chendb_1_36_1042210216.arc
channel d1: starting archived log restore to default destination
channel d1: restoring archived log
archived log thread=1 sequence=34
channel d1: restoring archived log
archived log thread=1 sequence=35
channel d1: reading from backup piece /rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak
channel d1: piece handle=/rmanbak/db/arch_CHENDB_20200801_0av6pasm_1_1.bak tag=ARCH_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:15
archived log file name=/arch/chendb_1_34_1042210216.arc thread=1 sequence=34
archived log file name=/arch/chendb_1_35_1042210216.arc thread=1 sequence=35
archived log file name=/arch/chendb_1_36_1042210216.arc thread=1 sequence=36
channel d1: starting archived log restore to default destination
channel d1: restoring archived log
archived log thread=1 sequence=37
channel d1: restoring archived log
archived log thread=1 sequence=38
channel d1: restoring archived log
archived log thread=1 sequence=39
channel d1: reading from backup piece /rmanbak/db/arch_CHENDB_20200801_0bv6pau4_1_1.bak
channel d1: piece handle=/rmanbak/db/arch_CHENDB_20200801_0bv6pau4_1_1.bak tag=ARCH_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:01
archived log file name=/arch/chendb_1_37_1042210216.arc thread=1 sequence=37
media recovery complete, elapsed time: 00:00:01
Finished recover at 20200801 17:13:44
released channel: d1恢复成功
场景四：完全恢复
将所有备份设置为可用
RMAN>
change backupset 5 available;
change backupset 6 available;
change backupset 7 available;
change backupset 8 available;查看备份状态
RMAN> list backupset summary;
List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
------- -- -- - ----------- ----------------- ------- ------- ---------- ---
1 B 0 A DISK 20200801 14:33:06 1 1 NO 0_RMANBAK_CJCDB
2 B 0 A DISK 20200801 14:33:26 1 1 NO 0_RMANBAK_CJCDB
3 B 0 A DISK 20200801 14:33:30 1 1 NO 0_RMANBAK_CJCDB
4 B 0 A DISK 20200801 14:33:31 1 1 NO 0_RMANBAK_CJCDB
5 B 1 A DISK 20200801 15:08:41 1 1 NO 1_RMANBAK_CJCDB
6 B 1 A DISK 20200801 15:08:48 1 1 NO 1_RMANBAK_CJCDB
7 B 1 A DISK 20200801 15:08:49 1 1 NO 1_RMANBAK_CJCDB
8 B 1 A DISK 20200801 15:08:50 1 1 NO 1_RMANBAK_CJCDB
9 B A A DISK 20200801 15:14:07 1 1 NO ARCH_CJCDB
10 B A A DISK 20200801 15:14:08 1 1 NO ARCH_CJCDB
11 B A A DISK 20200801 15:14:13 1 1 NO ARCH_CJCDB
12 B F A DISK 20200801 15:14:15 1 1 NO TAG20200801T151414
released channel: ORA_DISK_1
allocated channel: d1
channel d1: SID=20 device type=DISK
Starting restore at 20200801 17:25:24
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00002 to /u01/app/oracle11/oradata/chendb/sysaux01.dbf
channel d1: restoring datafile 00004 to /u01/app/oracle11/oradata/chendb/users01.dbf
channel d1: restoring datafile 00006 to /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_02v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:25
channel d1: starting datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
channel d1: restoring datafile 00001 to /u01/app/oracle11/oradata/chendb/system01.dbf
channel d1: restoring datafile 00003 to /u01/app/oracle11/oradata/chendb/undotbs01.dbf
channel d1: restoring datafile 00005 to /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak
channel d1: piece handle=/rmanbak/db/lev0_CHENDB_20200801_01v6p8eq_1_1.bak tag=0_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:35
Finished restore at 20200801 17:26:24
Starting recover at 20200801 17:26:24
channel d1: starting incremental datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00002: /u01/app/oracle11/oradata/chendb/sysaux01.dbf
destination for restore of datafile 00004: /u01/app/oracle11/oradata/chendb/users01.dbf
destination for restore of datafile 00006: /u01/app/oracle11/oradata/chendb/cjctbs01.dbf
channel d1: reading from backup piece /rmanbak/db/lev1_CHENDB_20200801_06v6pahk_1_1.bak
channel d1: piece handle=/rmanbak/db/lev1_CHENDB_20200801_06v6pahk_1_1.bak tag=1_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:01
channel d1: starting incremental datafile backup set restore
channel d1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00001: /u01/app/oracle11/oradata/chendb/system01.dbf
destination for restore of datafile 00003: /u01/app/oracle11/oradata/chendb/undotbs01.dbf
destination for restore of datafile 00005: /u01/app/oracle11/oradata/chendb/example01.dbf
channel d1: reading from backup piece /rmanbak/db/lev1_CHENDB_20200801_05v6pahk_1_1.bak
channel d1: piece handle=/rmanbak/db/lev1_CHENDB_20200801_05v6pahk_1_1.bak tag=1_RMANBAK_CJCDB
channel d1: restored backup piece 1
channel d1: restore complete, elapsed time: 00:00:01
starting media recovery
archived log for thread 1 with sequence 36 is already on disk as file /arch/chendb_1_36_1042210216.arc
archived log for thread 1 with sequence 37 is already on disk as file /arch/chendb_1_37_1042210216.arc
archived log for thread 1 with sequence 38 is already on disk as file /arch/chendb_1_38_1042210216.arc
archived log for thread 1 with sequence 39 is already on disk as file /arch/chendb_1_39_1042210216.arc
archived log file name=/arch/chendb_1_36_1042210216.arc thread=1 sequence=36
archived log file name=/arch/chendb_1_37_1042210216.arc thread=1 sequence=37
media recovery complete, elapsed time: 00:00:01
Finished recover at 20200801 17:26:28
released channel: d1恢复完成，启动数据库
SQL> alter database open;查看数据
SQL> conn cjc/cjc
SQL> select *from tab;
TNAME TABTYPECLUSTERID
------------------------------ ------- ----------
T1 TABLE
T2 TABLE
T3 TABLE
T5 TABLE
T6 TABLE
6 rows selected.场景五：异地恢复常用命令
1 恢复参数文件
RMAN> startup nomount
RMAN> restore spfile to '/rmandata/spfilecjcdb01.ora' from '/0712/rman/db/lev0_CJCDB01_20200711_04v52r5k_1_1.bak';
SQL> shutdown immedaite
SQL> create pfile='/rmandata/initcjcdb01.ora' from spfile='/rmandata/spfilecjcdb01.ora';
---修改initcjcdb01.ora参数
SQL> startup nomount pfile='/rmandata/initcjcdb01.ora'2 恢复控制文件
RMAN> list backupset of controlfile;
run
{
allocate channel c1 type disk;
restore controlfile from '/0712/rman/db/ctl_CJCDB01_20200712_1vv54j7m_1_1.ctl';
release channel c1;
}3 查看文件路径
select name from v$datafile
union all
select name from v$tempfile
union all
select name from v$controlfile
union all select member from v$logfile;4 生成转换文件位置的语句
SQL>
set line 150
set page 100
set heading off
select 'set newname for datafile ' || '''' || name || '''' || ' to ' ||
chr(39) ||
replace(name, '+DATA/cjcdb/datafile/', '/rmandata/db/') ||
''';'
from (select name
from v$datafile
union all
select name
from v$tempfile
union all
select name
from v$controlfile
union all
select member from v$logfile);
###
set newname for datafile '+DATA/cjcdb/datafile/system.256.1039343535' to '/rmandata/db/system.256.1039343535';
set newname for datafile '+DATA/cjcdb/datafile/sysaux.257.1039343537' to '/rmandata/db/sysaux.257.1039343537';
set newname for datafile '+DATA/cjcdb/datafile/undotbs1.258.1039343539' to '/rmandata/db/undotbs1.258.1039343539';
set newname for datafile '+DATA/cjcdb/datafile/users.259.1039343539' to '/rmandata/db/users.259.1039343539';
set newname for datafile '+DATA/cjcdb/datafile/undotbs2.264.1039343919' to '/rmandata/db/undotbs2.264.1039343919';
set newname for datafile '+DATA/cjcdb/datafile/cjctbs.268.1043622893' to '/rmandata/db/cjctbs.268.1043622893';
set newname for datafile '+DATA/cjcdb/datafile/chentbs.267.1046799153' to '/rmandata/db/chentbs.267.1046799153';
set newname for datafile '+DATA/cjcdb/datafile/chentbs01.272.1046799329' to '/rmandata/db/chentbs01.272.1046799329';
set newname for datafile '+DATA/cjcdb/tempfile/temp.263.1039343731' to '+DATA/cjcdb/tempfile/temp.263.1039343731';
set newname for datafile '/rmandata/control01.ctl' to '/rmandata/control01.ctl';
set newname for datafile '+DATA/cjcdb/onlinelog/group_2.262.1039343705' to '+DATA/cjcdb/onlinelog/group_2.262.1039343705';
set newname for datafile '+DATA/cjcdb/onlinelog/group_1.261.1039343703' to '+DATA/cjcdb/onlinelog/group_1.261.1039343703';
set newname for datafile '+DATA/cjcdb/onlinelog/group_3.265.1039344119' to '+DATA/cjcdb/onlinelog/group_3.265.1039344119';
set newname for datafile '+DATA/cjcdb/onlinelog/group_4.266.1039344121' to '+DATA/cjcdb/onlinelog/group_4.266.1039344121';
###5 修改文件路径
如果Restore执行后执行了SWITCH DATAFILE ALL;语句，可以不用执行下面的操作。
SQL>
set line 150
set page 100
set heading off
select 'alter database rename file ' || '''' || name || '''' || ' to ' ||
chr(39) ||
replace(name, '+DATA/cjcdb/datafile/', '/rmandata/db/') ||
''';'
from (select name
from v$datafile
union all
select name
from v$tempfile
union all
select name
from v$controlfile
union all
select member from v$logfile);
###
alter database rename file '+DATA/cjcdb/datafile/system.256.1039343535' to '/rmandata/db/system.256.1039343535';
alter database rename file '+DATA/cjcdb/datafile/sysaux.257.1039343537' to '/rmandata/db/sysaux.257.1039343537';
alter database rename file '+DATA/cjcdb/datafile/undotbs1.258.1039343539' to '/rmandata/db/undotbs1.258.1039343539';
alter database rename file '+DATA/cjcdb/datafile/users.259.1039343539' to '/rmandata/db/users.259.1039343539';
alter database rename file '+DATA/cjcdb/datafile/undotbs2.264.1039343919' to '/rmandata/db/undotbs2.264.1039343919';
alter database rename file '+DATA/cjcdb/datafile/cjctbs.268.1043622893' to '/rmandata/db/cjctbs.268.1043622893';
alter database rename file '+DATA/cjcdb/datafile/chentbs.267.1046799153' to '/rmandata/db/chentbs.267.1046799153';
alter database rename file '+DATA/cjcdb/datafile/chentbs01.272.1046799329' to '/rmandata/db/chentbs01.272.1046799329';
alter database rename file '+DATA/cjcdb/tempfile/temp.263.1039343731' to '+DATA/cjcdb/tempfile/temp.263.1039343731';
alter database rename file '/rmandata/control01.ctl' to '/rmandata/control01.ctl';
alter database rename file '+DATA/cjcdb/onlinelog/group_2.262.1039343705' to '+DATA/cjcdb/onlinelog/group_2.262.1039343705';
alter database rename file '+DATA/cjcdb/onlinelog/group_1.261.1039343703' to '+DATA/cjcdb/onlinelog/group_1.261.1039343703';
alter database rename file '+DATA/cjcdb/onlinelog/group_3.265.1039344119' to '+DATA/cjcdb/onlinelog/group_3.265.1039344119';
alter database rename file '+DATA/cjcdb/onlinelog/group_4.266.1039344121' to '+DATA/cjcdb/onlinelog/group_4.266.1039344121';
###6 异机恢复示例(RAC备份恢复到单机)：
RMAN>
run{
allocate channel d1 type disk;
set newname for datafile '+DATA/cjcdb/datafile/system.256.1039343535' to '/rmandata/db/system.256.1039343535';
set newname for datafile '+DATA/cjcdb/datafile/sysaux.257.1039343537' to '/rmandata/db/sysaux.257.1039343537';
set newname for datafile '+DATA/cjcdb/datafile/undotbs1.258.1039343539' to '/rmandata/db/undotbs1.258.1039343539';
set newname for datafile '+DATA/cjcdb/datafile/users.259.1039343539' to '/rmandata/db/users.259.1039343539';
set newname for datafile '+DATA/cjcdb/datafile/undotbs2.264.1039343919' to '/rmandata/db/undotbs2.264.1039343919';
set newname for datafile '+DATA/cjcdb/datafile/cjctbs.268.1043622893' to '/rmandata/db/cjctbs.268.1043622893';
set newname for datafile '+DATA/cjcdb/datafile/chentbs.267.1046799153' to '/rmandata/db/chentbs.267.1046799153';
set newname for datafile '+DATA/cjcdb/datafile/chentbs01.272.1046799329' to '/rmandata/db/chentbs01.272.1046799329';
set newname for datafile '+DATA/cjcdb/tempfile/temp.263.1039343731' to '+DATA/cjcdb/tempfile/temp.263.1039343731';
set newname for datafile '/rmandata/control01.ctl' to '/rmandata/control01.ctl';
set newname for datafile '+DATA/cjcdb/onlinelog/group_2.262.1039343705' to '+DATA/cjcdb/onlinelog/group_2.262.1039343705';
set newname for datafile '+DATA/cjcdb/onlinelog/group_1.261.1039343703' to '+DATA/cjcdb/onlinelog/group_1.261.1039343703';
set newname for datafile '+DATA/cjcdb/onlinelog/group_3.265.1039344119' to '+DATA/cjcdb/onlinelog/group_3.265.1039344119';
set newname for datafile '+DATA/cjcdb/onlinelog/group_4.266.1039344121' to '+DATA/cjcdb/onlinelog/group_4.266.1039344121';
restore database until time "to_date('2020-07-31 22:17:47','yyyy-mm-dd hh24:mi:ss')";
SWITCH DATAFILE ALL;
recover database until time "to_date('2020-07-31 22:17:47','yyyy-mm-dd hh24:mi:ss')";
release channel d1;
}7 在某些特定场景下：
先执行了
restore database until time xxx;
recover database until time xxx;recover结束后没有启动数据库，数据库处于mouont状态。
这时如果想将数据库recover到更新的时间，不需要在执行
restore database until time xxx;数据量大时，restore database耗时，耗空间。
只需要执行
recover database until time xxx+time;但是如果在这个时间段内生成了新的数据文件，不能直接进行recover。
需要单独restore新增的数据文件，或通过下面的命令生成一个新的文件。
alter database create datafile '+DATA/cjcdb/datafile/cjc_data_5.dbf' as '/oradata/cjcdb/datafile/cjc_data_5.dbf';然后可以进行执行recover。
作者：chenoracle
