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这篇文章主要为大家展示了“RMAN 中如何使用 until time 子句对 Non-CDB 中的表执行按时间点恢复”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让丸趣 TV 小编带领大家一起研究并学习一下“RMAN 中如何使用 until time 子句对 Non-CDB 中的表执行按时间点恢复”这篇文章吧。
在 RMAN 中使用 until time 子句对 Non-CDB 中的表执行按时间点恢复操作步骤如下
1. 对整个 Non-CDB(orcl) 生成 RMAN 备份
RMAN backup as compressed backupset database format +data/backup/%d_%I_%U_%t plus archivelog format arc_%d_%T_%U
Starting backup at 10-JAN-18
current log archived
using channel ORA_DISK_1
channel ORA_DISK_1: starting compressed archived log backup set
channel ORA_DISK_1: specifying archived log(s) in backup set
input archived log thread=1 sequence=13 RECID=1 STAMP=964995986
input archived log thread=1 sequence=14 RECID=2 STAMP=965007422
input archived log thread=1 sequence=15 RECID=3 STAMP=965007493
input archived log thread=1 sequence=16 RECID=4 STAMP=965007542
input archived log thread=1 sequence=17 RECID=5 STAMP=965011311
input archived log thread=1 sequence=18 RECID=6 STAMP=965011687
channel ORA_DISK_1: starting piece 1 at 10-JAN-18
channel ORA_DISK_1: finished piece 1 at 10-JAN-18
piece handle=/u01/app/oracle/product/12.2.0/db/dbs/arc_ORCL_20180110_21so9q78_1_1 tag=TAG20180110T024807 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:15
Finished backup at 10-JAN-18
Starting backup at 10-JAN-18
using channel ORA_DISK_1
channel ORA_DISK_1: starting compressed full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00004 name=+DATA/orcl/datafile/users01.dbf
input datafile file number=00001 name=+DATA/orcl/datafile/system01.dbf
input datafile file number=00002 name=+DATA/orcl/datafile/sysaux01.dbf
input datafile file number=00003 name=+DATA/orcl/datafile/undotbs01.dbf
input datafile file number=00005 name=+DATA/orcl/datafile/usertbs01.dbf
channel ORA_DISK_1: starting piece 1 at 10-JAN-18
channel ORA_DISK_1: finished piece 1 at 10-JAN-18
piece handle=+DATA/backup/orcl_1492772871_22so9q7p_1_1_965011705 tag=TAG20180110T024824 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45
Finished backup at 10-JAN-18
Starting backup at 10-JAN-18
current log archived
using channel ORA_DISK_1
channel ORA_DISK_1: starting compressed archived log backup set
channel ORA_DISK_1: specifying archived log(s) in backup set
input archived log thread=1 sequence=19 RECID=7 STAMP=965011751
channel ORA_DISK_1: starting piece 1 at 10-JAN-18
channel ORA_DISK_1: finished piece 1 at 10-JAN-18
piece handle=/u01/app/oracle/product/12.2.0/db/dbs/arc_ORCL_20180110_23so9q98_1_1 tag=TAG20180110T024912 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 10-JAN-18
Starting Control File and SPFILE Autobackup at 10-JAN-18
piece handle=+DATA/backup/c-1492772871-20180110-01 comment=NONE
Finished Control File and SPFILE Autobackup at 10-JAN-182. 在删除表 t_emp 之前记录当前 scn 与时间，在执行恢复时它们被用来指定恢复时间点
SQL select count(*) from t_emp;
COUNT(*)
----------
107
1 row selected.
SQL select sysdate from dual;
SYSDATE
-------------------
2018-01-10 20:10:01
1 row selected.
SQL select current_scn from v$database;
CURRENT_SCN
-----------
447215
1 row selected.3. 启动 RMAN 并使用有 sysbacup 或 sysdba 权限的用户连接到目标数据库。
[oracle@jytest3 ~]$ export NLS_DATE_FORMAT= yyyy-mm-dd hh34:mi:ss
[oracle@jytest3 ~]$ rman target/
Recovery Manager: Release 12.2.0.1.0 - Production on Wed Jan 10 02:22:13 2018
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
connected to target database: ORCL (DBID=1492772871)4. 通过使用 recover table 命令将要被恢复的表或表分区恢复到指定的时间点。使用 auxiliary destination 子句（/ora_xtts/recover 辅助数据文件存储目录)与 until scn 来指定恢复时间点, 并且在 recover 命令中使用子句 dump file 与 datapump destination，指定包含被恢复表或表分区的导出 dump 文件的文件名 (t_emp_recvr.dmp) 与存储位置(/ora_xtts/dump)。使用 remap table 子句将 hr.t_emp 恢复成 jy.t_emp_new。使用 remap tablespace 子 句将表 t_emp 从 hr 用户方案恢复到 jy 用户方案中
RMAN run
2 {
3 recover table hr.t_emp
4 until time 2018-01-10 20:10:01
5 auxiliary destination /ora_xtts/recover
6 datapump destination /ora_xtts/dump
7 dump file t_emp_recvr.dmp
8 remap table HR . T_EMP : JY . T_EMP_NEW
9 remap tablespace USERS : USERTBS
10 }
Starting recover at 2018-01-10 22:07:43
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=49 device type=DISK
RMAN-05026: warning: presuming following set of tablespaces applies to specified point-in-time
List of tablespaces expected to have UNDO segments
Tablespace SYSTEM
Tablespace UNDOTBS1
Creating automatic instance, with SID= BxcB
initialization parameters used for automatic instance:
db_name=ORCL
db_unique_name=BxcB_pitr_ORCL
compatible=12.2.0
db_block_size=8192
db_files=200
diagnostic_dest=/u01/app/oracle
_system_trig_enabled=FALSE
sga_target=1024M
processes=120
db_create_file_dest=/ora_xtts/recover
log_archive_dest_1= location=/ora_xtts/recover
#No auxiliary parameter file used
Variable Size 293602616 bytes
Database Buffers 763363328 bytes
Redo Buffers 8146944 bytes
Automatic instance created
contents of Memory Script:
# set requested point in time
set until time 2018-01-10 20:10:01
# restore the controlfile
restore clone controlfile;
# mount the controlfile
sql clone alter database mount clone database
# archive current online log
sql alter system archive log current
executing Memory Script
executing command: SET until clause
Starting restore at 2018-01-10 22:09:04
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=6 device type=DISK
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: reading from backup piece +DATA/backup/c-1492772871-20180110-02
channel ORA_AUX_DISK_1: piece handle=+DATA/backup/c-1492772871-20180110-02 tag=TAG20180110T200959
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:04
output file name=/ora_xtts/recover/ORCL/controlfile/o1_mf_f5d7n52r_.ctl
Finished restore at 2018-01-10 22:09:10
sql statement: alter database mount clone database
sql statement: alter system archive log current
contents of Memory Script:
# set requested point in time
set until time 2018-01-10 20:10:01
# set destinations for recovery set and auxiliary set datafiles
set newname for clone datafile 1 to new;
set newname for clone datafile 3 to new;
set newname for clone datafile 2 to new;
set newname for clone tempfile 1 to new;
# switch all tempfiles
switch clone tempfile all;
# restore the tablespaces in the recovery set and the auxiliary set
restore clone datafile 1, 3, 2;
switch clone datafile all;
executing Memory Script
executing command: SET until clause
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
renamed tempfile 1 to /ora_xtts/recover/ORCL/datafile/o1_mf_tempts1_%u_.tmp in control file
Starting restore at 2018-01-10 22:09:18
using channel ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00001 to /ora_xtts/recover/ORCL/datafile/o1_mf_system_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00003 to /ora_xtts/recover/ORCL/datafile/o1_mf_undotbs1_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00002 to /ora_xtts/recover/ORCL/datafile/o1_mf_sysaux_%u_.dbf
channel ORA_AUX_DISK_1: reading from backup piece +DATA/backup/orcl_1492772871_26sobn77_1_1_965074151
channel ORA_AUX_DISK_1: piece handle=+DATA/backup/orcl_1492772871_26sobn77_1_1_965074151 tag=TAG20180110T200911
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:45
Finished restore at 2018-01-10 22:10:04
datafile 1 switched to datafile copy
input datafile copy RECID=4 STAMP=965081404 file name=/ora_xtts/recover/ORCL/datafile/o1_mf_system_f5d7nhmp_.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=5 STAMP=965081404 file name=/ora_xtts/recover/ORCL/datafile/o1_mf_undotbs1_f5d7nhq5_.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=6 STAMP=965081405 file name=/ora_xtts/recover/ORCL/datafile/o1_mf_sysaux_f5d7nhot_.dbf
contents of Memory Script:
# set requested point in time
set until time 2018-01-10 20:10:01
# online the datafiles restored or switched
sql clone alter database datafile 1 online
sql clone alter database datafile 3 online
sql clone alter database datafile 2 online
# recover and open database read only
recover clone database tablespace SYSTEM , UNDOTBS1 , SYSAUX
sql clone alter database open read only
executing Memory Script
executing command: SET until clause
sql statement: alter database datafile 1 online
sql statement: alter database datafile 3 online
sql statement: alter database datafile 2 online
Starting recover at 2018-01-10 22:10:06
using channel ORA_AUX_DISK_1
starting media recovery
archived log for thread 1 with sequence 24 is already on disk as file +DATA/arch/orcl/1_24_964992135.dbf
archived log for thread 1 with sequence 25 is already on disk as file +DATA/arch/orcl/1_25_964992135.dbf
archived log file name=+DATA/arch/orcl/1_24_964992135.dbf thread=1 sequence=24
archived log file name=+DATA/arch/orcl/1_25_964992135.dbf thread=1 sequence=25
media recovery complete, elapsed time: 00:00:01
Finished recover at 2018-01-10 22:10:09
sql statement: alter database open read only
contents of Memory Script:
sql clone create spfile from memory
shutdown clone immediate;
startup clone nomount;
sql clone alter system set control_files =
/ora_xtts/recover/ORCL/controlfile/o1_mf_f5d7n52r_.ctl comment=
RMAN set scope=spfile
shutdown clone immediate;
startup clone nomount;
# mount database
sql clone alter database mount clone database
executing Memory Script
sql statement: create spfile from memory
database closed
database dismounted
Oracle instance shut down
connected to auxiliary database (not started)
Oracle instance started
Total System Global Area 1073741824 bytes
Fixed Size 8628936 bytes
Variable Size 293602616 bytes
Database Buffers 763363328 bytes
Redo Buffers 8146944 bytes
sql statement: alter system set control_files = /ora_xtts/recover/ORCL/controlfile/o1_mf_f5d7n52r_.ctl comment= RMAN set scope=spfile
Oracle instance shut down
connected to auxiliary database (not started)
Oracle instance started
Total System Global Area 1073741824 bytes
Fixed Size 8628936 bytes
Variable Size 293602616 bytes
Database Buffers 763363328 bytes
Redo Buffers 8146944 bytes
sql statement: alter database mount clone database
contents of Memory Script:
# set requested point in time
set until time 2018-01-10 20:10:01
# set destinations for recovery set and auxiliary set datafiles
set newname for datafile 4 to new;
# restore the tablespaces in the recovery set and the auxiliary set
restore clone datafile 4;
switch clone datafile all;
executing Memory Script
executing command: SET until clause
executing command: SET NEWNAME
Starting restore at 2018-01-10 22:11:13
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=7 device type=DISK
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00004 to /ora_xtts/recover/BXCB_PITR_ORCL/datafile/o1_mf_users_%u_.dbf
channel ORA_AUX_DISK_1: reading from backup piece +DATA/backup/orcl_1492772871_26sobn77_1_1_965074151
channel ORA_AUX_DISK_1: piece handle=+DATA/backup/orcl_1492772871_26sobn77_1_1_965074151 tag=TAG20180110T200911
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:55
Finished restore at 2018-01-10 22:12:09
datafile 4 switched to datafile copy
input datafile copy RECID=8 STAMP=965081529 file name=/ora_xtts/recover/BXCB_PITR_ORCL/datafile/o1_mf_users_f5d7r2q4_.dbf
contents of Memory Script:
# set requested point in time
set until time 2018-01-10 20:10:01
# online the datafiles restored or switched
sql clone alter database datafile 4 online
# recover and open resetlogs
recover clone database tablespace USERS , SYSTEM , UNDOTBS1 , SYSAUX delete archivelog;
alter clone database open resetlogs;
executing Memory Script
executing command: SET until clause
sql statement: alter database datafile 4 online
Starting recover at 2018-01-10 22:12:10
using channel ORA_AUX_DISK_1
starting media recovery
archived log for thread 1 with sequence 24 is already on disk as file +DATA/arch/orcl/1_24_964992135.dbf
archived log for thread 1 with sequence 25 is already on disk as file +DATA/arch/orcl/1_25_964992135.dbf
archived log file name=+DATA/arch/orcl/1_24_964992135.dbf thread=1 sequence=24
archived log file name=+DATA/arch/orcl/1_25_964992135.dbf thread=1 sequence=25
media recovery complete, elapsed time: 00:00:00
Finished recover at 2018-01-10 22:12:14
database opened
contents of Memory Script:
# create directory for datapump import
sql create or replace directory TSPITR_DIROBJ_DPDIR as
/ora_xtts/dump
# create directory for datapump export
sql clone create or replace directory TSPITR_DIROBJ_DPDIR as
/ora_xtts/dump
executing Memory Script
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as /ora_xtts/dump
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as /ora_xtts/dump
Performing export of tables...
EXPDP Starting SYS . TSPITR_EXP_BxcB_tfoq :
EXPDP Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
EXPDP Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
EXPDP Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER
EXPDP Processing object type TABLE_EXPORT/TABLE/TABLE
EXPDP . . exported HR . T_EMP 17.08 KB 107 rows
EXPDP Master table SYS . TSPITR_EXP_BxcB_tfoq successfully loaded/unloaded
EXPDP ******************************************************************************
EXPDP Dump file set for SYS.TSPITR_EXP_BxcB_tfoq is:
EXPDP /ora_xtts/dump/t_emp_recvr.dmp
EXPDP Job SYS . TSPITR_EXP_BxcB_tfoq successfully completed at Wed Jan 10 22:13:08 2018 elapsed 0 00:00:33
Export completed
Performing import of tables...
IMPDP Master table SYS . TSPITR_IMP_BxcB_Enlv successfully loaded/unloaded
IMPDP Starting SYS . TSPITR_IMP_BxcB_Enlv :
IMPDP Processing object type TABLE_EXPORT/TABLE/TABLE
IMPDP Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
IMPDP . . imported JY . T_EMP_NEW 17.08 KB 107 rows
IMPDP Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
IMPDP Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER
IMPDP Job SYS . TSPITR_IMP_BxcB_Enlv successfully completed at Wed Jan 10 22:13:48 2018 elapsed 0 00:00:33
Import completed
Automatic instance removed
auxiliary instance file /ora_xtts/recover/ORCL/datafile/o1_mf_tempts1_f5d7p27f_.tmp deleted
auxiliary instance file /ora_xtts/recover/BXCB_PITR_ORCL/onlinelog/o1_mf_3_f5d7syo5_.log deleted
auxiliary instance file /ora_xtts/recover/BXCB_PITR_ORCL/onlinelog/o1_mf_2_f5d7syng_.log deleted
auxiliary instance file /ora_xtts/recover/BXCB_PITR_ORCL/onlinelog/o1_mf_1_f5d7symr_.log deleted
auxiliary instance file /ora_xtts/recover/BXCB_PITR_ORCL/datafile/o1_mf_users_f5d7r2q4_.dbf deleted
auxiliary instance file /ora_xtts/recover/ORCL/datafile/o1_mf_sysaux_f5d7nhot_.dbf deleted
auxiliary instance file /ora_xtts/recover/ORCL/datafile/o1_mf_undotbs1_f5d7nhq5_.dbf deleted
auxiliary instance file /ora_xtts/recover/ORCL/datafile/o1_mf_system_f5d7nhmp_.dbf deleted
auxiliary instance file /ora_xtts/recover/ORCL/controlfile/o1_mf_f5d7n52r_.ctl deleted
auxiliary instance file t_emp_recvr.dmp deleted
Finished recover at 2018-01-10 22:13:535. 验证表 hr.t_emp 的数据是否成功恢复到表 jy.t_emp_new 中，从查询记录可以看到已经成功恢复到表 jy.t_emp_new 中。
SQL select count(*) from jy.t_emp_new;
COUNT(*)
----------
107以上是“RMAN 中如何使用 until time 子句对 Non-CDB 中的表执行按时间点恢复”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注丸趣 TV 行业资讯频道！
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