在Oracle11g中可以使用TSPITR来对被删除的表空间执行表空间按时间点恢复，下面通过一个实例来演示这个功能。
1.创建测试表空间test
SQL> create tablespace test datafile '/u03/app/oracle/oradata/db/test01.dbf' size 50M autoextend off extent management local segment space management auto; Tablespace created. SQL> select name from v$datafile; NAME -------------------------------------------------------------------------------- /u03/app/oracle/oradata/db/system01.dbf /u03/app/oracle/oradata/db/sysaux01.dbf /u03/app/oracle/oradata/db/undotbs01.dbf /u03/app/oracle/oradata/db/users01.dbf /u03/app/oracle/oradata/db/example01.dbf /u03/app/oracle/oradata/db/test01.dbf 6 rows selected.
2.创建测试用户test与测试表t1
SQL> create user test identified by "test" default tablespace test temporary tablespace temp;
User created.
SQL> create table test.t1 as select * from dba_objects;
Table created.
SQL> select count(*) from test.t1;
COUNT(*)
----------
86031
3.对整个数据库的执行完全备份
RMAN> backup as backupset database plus archivelog; Starting backup at 2015-06-01 22:05:12 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=5 RECID=1 STAMP=880996327 input archived log thread=1 sequence=6 RECID=2 STAMP=880996438 input archived log thread=1 sequence=7 RECID=3 STAMP=881014383 input archived log thread=1 sequence=8 RECID=4 STAMP=881014612 input archived log thread=1 sequence=9 RECID=5 STAMP=881015165 input archived log thread=1 sequence=10 RECID=13 STAMP=881233508 input archived log thread=1 sequence=11 RECID=14 STAMP=881233508 channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:05:14 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:05:21 piece handle=/u02/backup/0kq8ea8q_1_1 tag=TAG20150601T220514 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:07 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=1 RECID=12 STAMP=881233507 channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:05:21 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:05:22 piece handle=/u02/backup/0lq8ea91_1_1 tag=TAG20150601T220514 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=12 RECID=15 STAMP=881233508 channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:05:23 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:05:26 piece handle=/u02/backup/0mq8ea92_1_1 tag=TAG20150601T220514 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=2 RECID=21 STAMP=881233663 input archived log thread=1 sequence=3 RECID=22 STAMP=881233941 input archived log thread=1 sequence=4 RECID=23 STAMP=881234587 input archived log thread=1 sequence=5 RECID=24 STAMP=881235045 input archived log thread=1 sequence=6 RECID=25 STAMP=881235180 input archived log thread=1 sequence=7 RECID=26 STAMP=881272559 channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:05:26 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:05:27 piece handle=/u02/backup/0nq8ea96_1_1 tag=TAG20150601T220514 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=13 RECID=16 STAMP=881233508 input archived log thread=1 sequence=14 RECID=17 STAMP=881233508 input archived log thread=1 sequence=15 RECID=18 STAMP=881233508 input archived log thread=1 sequence=16 RECID=19 STAMP=881233508 input archived log thread=1 sequence=17 RECID=20 STAMP=881233508 input archived log thread=1 sequence=18 RECID=11 STAMP=881232587 input archived log thread=1 sequence=19 RECID=9 STAMP=881232587 input archived log thread=1 sequence=20 RECID=10 STAMP=881232587 channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:05:27 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:05:28 piece handle=/u02/backup/0oq8ea97_1_1 tag=TAG20150601T220514 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=8 RECID=27 STAMP=881273112 channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:05:28 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:05:29 piece handle=/u02/backup/0pq8ea98_1_1 tag=TAG20150601T220514 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 2015-06-01 22:05:29 Starting backup at 2015-06-01 22:05:29 using channel ORA_DISK_1 channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00001 name=/u03/app/oracle/oradata/db/system01.dbf input datafile file number=00002 name=/u03/app/oracle/oradata/db/sysaux01.dbf input datafile file number=00003 name=/u03/app/oracle/oradata/db/undotbs01.dbf input datafile file number=00005 name=/u03/app/oracle/oradata/db/test01.dbf input datafile file number=00004 name=/u03/app/oracle/oradata/db/users01.dbf channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:05:31 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:09:16 piece handle=/u02/backup/0qq8ea9b_1_1 tag=TAG20150601T220529 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:03:45 channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set including current control file in backup set including current SPFILE in backup set channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:09:20 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:09:21 piece handle=/u02/backup/0rq8eagd_1_1 tag=TAG20150601T220529 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 2015-06-01 22:09:21 Starting backup at 2015-06-01 22:09:21 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=9 RECID=28 STAMP=881273363 channel ORA_DISK_1: starting piece 1 at 2015-06-01 22:09:27 channel ORA_DISK_1: finished piece 1 at 2015-06-01 22:09:30 piece handle=/u02/backup/0sq8eagn_1_1 tag=TAG20150601T220926 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03 Finished backup at 2015-06-01 22:09:30
4.删除表空间test，并记录删除操作执行之前的系统SCN与时间
SQL> select to_char(scn_to_timestamp(current_scn),'yyyy-mm-dd hh24:mi:ss'),current_scn from v$database; TO_CHAR(SCN_TO_TIME CURRENT_SCN ------------------- ----------- 2015-06-01 22:11:45 751203 SQL> drop tablespace test including contents and datafiles; Tablespace dropped. SQL> select tablespace_name,status from dba_tablespaces; TABLESPACE_NAME STATUS ------------------------------ --------- SYSTEM ONLINE SYSAUX ONLINE UNDOTBS1 ONLINE TEMP ONLINE USERS ONLINE SQL> host ls -lrt /u03/app/oracle/oradata/db/ total 1548000 -rw-r----- 1 oracle11 oinstall 30416896 Jun 1 22:01 temp01.dbf -rw-r----- 1 oracle11 oinstall 52429312 Jun 1 22:05 redo02.log -rw-r----- 1 oracle11 oinstall 52429312 Jun 1 22:09 redo03.log -rw-r----- 1 oracle11 oinstall 5251072 Jun 1 22:14 users01.dbf -rw-r----- 1 oracle11 oinstall 775954432 Jun 1 22:14 system01.dbf -rw-r----- 1 oracle11 oinstall 73408512 Jun 1 22:14 undotbs01.dbf -rw-r----- 1 oracle11 oinstall 545267712 Jun 1 22:14 sysaux01.dbf -rw-r----- 1 oracle11 oinstall 52429312 Jun 1 22:14 redo01.log -rw-r----- 1 oracle11 oinstall 9748480 Jun 1 22:14 control01.ctl
从上面的查询可以看到表空间test已经被删除了。
5.现在执行TSPITR将表空间test恢复到被删除之前的时间点
RMAN> recover tablespace "TEST" until time '2015-06-01 22:11:45' auxiliary destination '/u02/auxiliary';
Starting recover at 2015-06-01 22:22:25
starting full resync of recovery catalog
full resync complete
using channel ORA_DISK_1
Creating automatic instance, with SID='jAvb'
initialization parameters used for automatic instance:
db_name=DB
db_unique_name=jAvb_tspitr_DB
compatible=11.2.0.4.0
db_block_size=8192
db_files=200
sga_target=1G
processes=80
db_create_file_dest=/u02/auxiliary
log_archive_dest_1='location=/u02/auxiliary'
#No auxiliary parameter file used
starting up automatic instance DB
Oracle instance started
Total System Global Area 1071333376 bytes
Fixed Size 1369420 bytes
Variable Size 281021108 bytes
Database Buffers 784334848 bytes
Redo Buffers 4608000 bytes
Automatic instance created
contents of Memory Script:
{
# set requested point in time
set until time "2015-06-01 22:11:45";
# 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';
# avoid unnecessary autobackups for structural changes during TSPITR
sql 'begin dbms_backup_restore.AutoBackupFlag(FALSE); end;';
# resync catalog
resync catalog;
}
executing Memory Script
executing command: SET until clause
Starting restore at 2015-06-01 22:22:40
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=18 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 /u02/backup/0rq8eagd_1_1
channel ORA_AUX_DISK_1: piece handle=/u02/backup/0rq8eagd_1_1 tag=TAG20150601T220529
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u02/auxiliary/DB/controlfile/o1_mf_bprtokmc_.ctl
Finished restore at 2015-06-01 22:22:42
sql statement: alter database mount clone database
sql statement: alter system archive log current
sql statement: begin dbms_backup_restore.AutoBackupFlag(FALSE); end;
starting full resync of recovery catalog
full resync complete
contents of Memory Script:
{
# set requested point in time
set until time "2015-06-01 22:11:45";
# 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;
set newname for datafile 5 to
"/u03/app/oracle/oradata/db/test01.dbf";
# switch all tempfiles
switch clone tempfile all;
# restore the tablespaces in the recovery set and the auxiliary set
restore clone datafile 1, 3, 2, 5;
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
executing command: SET NEWNAME
renamed tempfile 1 to /u02/auxiliary/DB/datafile/o1_mf_temp_%u_.tmp in control file
Starting restore at 2015-06-01 22:22:51
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 /u02/auxiliary/DB/datafile/o1_mf_system_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00003 to /u02/auxiliary/DB/datafile/o1_mf_undotbs1_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00002 to /u02/auxiliary/DB/datafile/o1_mf_sysaux_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00005 to /u03/app/oracle/oradata/db/test01.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u02/backup/0qq8ea9b_1_1
channel ORA_AUX_DISK_1: piece handle=/u02/backup/0qq8ea9b_1_1 tag=TAG20150601T220529
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:02:15
Finished restore at 2015-06-01 22:25:07
datafile 1 switched to datafile copy
input datafile copy RECID=5 STAMP=881274307 file name=/u02/auxiliary/DB/datafile/o1_mf_system_bprtowv6_.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=6 STAMP=881274307 file name=/u02/auxiliary/DB/datafile/o1_mf_undotbs1_bprtowxf_.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=7 STAMP=881274307 file name=/u02/auxiliary/DB/datafile/o1_mf_sysaux_bprtowxc_.dbf
contents of Memory Script:
{
# set requested point in time
set until time "2015-06-01 22:11:45";
# 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";
sql clone "alter database datafile 5 online";
# recover and open resetlogs
recover clone database tablespace "TEST", "SYSTEM", "UNDOTBS1", "SYSAUX" delete archivelog;
alter clone database open resetlogs;
}
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
sql statement: alter database datafile 5 online
Starting recover at 2015-06-01 22:25:08
using channel ORA_AUX_DISK_1
starting media recovery
archived log for thread 1 with sequence 9 is already on disk as file /u03/archivelog/1_9_881232587.dbf
archived log for thread 1 with sequence 10 is already on disk as file /u03/archivelog/1_10_881232587.dbf
archived log file name=/u03/archivelog/1_9_881232587.dbf thread=1 sequence=9
archived log file name=/u03/archivelog/1_10_881232587.dbf thread=1 sequence=10
media recovery complete, elapsed time: 00:00:16
Finished recover at 2015-06-01 22:25:25
database opened
contents of Memory Script:
{
# make read only the tablespace that will be exported
sql clone 'alter tablespace "TEST" read only';
# create directory for datapump import
sql "create or replace directory TSPITR_DIROBJ_DPDIR as ''
/u02/auxiliary''";
# create directory for datapump export
sql clone "create or replace directory TSPITR_DIROBJ_DPDIR as ''
/u02/auxiliary''";
}
executing Memory Script
sql statement: alter tablespace "TEST" read only
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u02/auxiliary''
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u02/auxiliary''
Performing export of metadata...
EXPDP> Starting "SYS"."TSPITR_EXP_jAvb":
EXPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS
EXPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
EXPDP> Master table "SYS"."TSPITR_EXP_jAvb" successfully loaded/unloaded
EXPDP> ******************************************************************************
EXPDP> Dump file set for SYS.TSPITR_EXP_jAvb is:
EXPDP> /u02/auxiliary/tspitr_jAvb_29236.dmp
EXPDP> ******************************************************************************
EXPDP> Datafiles required for transportable tablespace TEST:
EXPDP> /u03/app/oracle/oradata/db/test01.dbf
EXPDP> Job "SYS"."TSPITR_EXP_jAvb" successfully completed at Mon Jun 1 22:27:28 2015 elapsed 0 00:01:12
Export completed
contents of Memory Script:
{
# shutdown clone before import
shutdown clone immediate
}
executing Memory Script
database closed
database dismounted
Oracle instance shut down
Performing import of metadata...
IMPDP> Master table "SYS"."TSPITR_IMP_jAvb" successfully loaded/unloaded
IMPDP> Starting "SYS"."TSPITR_IMP_jAvb":
IMPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS
IMPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
IMPDP> Job "SYS"."TSPITR_IMP_jAvb" successfully completed at Mon Jun 1 22:28:23 2015 elapsed 0 00:00:14
Import completed
contents of Memory Script:
{
# make read write and offline the imported tablespaces
sql 'alter tablespace "TEST" read write';
sql 'alter tablespace "TEST" offline';
# enable autobackups after TSPITR is finished
sql 'begin dbms_backup_restore.AutoBackupFlag(TRUE); end;';
# resync catalog
resync catalog;
}
executing Memory Script
sql statement: alter tablespace "TEST" read write
sql statement: alter tablespace "TEST" offline
sql statement: begin dbms_backup_restore.AutoBackupFlag(TRUE); end;
starting full resync of recovery catalog
full resync complete
Removing automatic instance
Automatic instance removed
auxiliary instance file /u02/auxiliary/DB/datafile/o1_mf_temp_bprtv5bo_.tmp deleted
auxiliary instance file /u02/auxiliary/DB/onlinelog/o1_mf_3_bprttwvr_.log deleted
auxiliary instance file /u02/auxiliary/DB/onlinelog/o1_mf_2_bprttt0k_.log deleted
auxiliary instance file /u02/auxiliary/DB/onlinelog/o1_mf_1_bprttp4g_.log deleted
auxiliary instance file /u02/auxiliary/DB/datafile/o1_mf_sysaux_bprtowxc_.dbf deleted
auxiliary instance file /u02/auxiliary/DB/datafile/o1_mf_undotbs1_bprtowxf_.dbf deleted
auxiliary instance file /u02/auxiliary/DB/datafile/o1_mf_system_bprtowv6_.dbf deleted
auxiliary instance file /u02/auxiliary/DB/controlfile/o1_mf_bprtokmc_.ctl deleted
Finished recover at 2015-06-01 22:28:45
SQL> select tablespace_name,status from dba_tablespaces; TABLESPACE_NAME STATUS ------------------------------ --------- SYSTEM ONLINE SYSAUX ONLINE UNDOTBS1 ONLINE TEMP ONLINE USERS ONLINE TEST OFFLINE 6 rows selected. SQL> select name from v$datafile; NAME -------------------------------------------------------------------------------- /u03/app/oracle/oradata/db/system01.dbf /u03/app/oracle/oradata/db/sysaux01.dbf /u03/app/oracle/oradata/db/undotbs01.dbf /u03/app/oracle/oradata/db/users01.dbf /u03/app/oracle/oradata/db/test01.dbf SQL> host ls -lrt /u03/app/oracle/oradata/db/ total 1599328 -rw-r----- 1 oracle11 oinstall 52429312 Jun 1 22:09 redo03.log -rw-r----- 1 oracle11 oinstall 5251072 Jun 1 22:22 users01.dbf -rw-r----- 1 oracle11 oinstall 52429312 Jun 1 22:22 redo01.log -rw-r----- 1 oracle11 oinstall 30416896 Jun 1 22:28 temp01.dbf -rw-r----- 1 oracle11 oinstall 52436992 Jun 1 22:28 test01.dbf -rw-r----- 1 oracle11 oinstall 775954432 Jun 1 22:28 system01.dbf -rw-r----- 1 oracle11 oinstall 73408512 Jun 1 22:28 undotbs01.dbf -rw-r----- 1 oracle11 oinstall 545267712 Jun 1 22:28 sysaux01.dbf -rw-r----- 1 oracle11 oinstall 52429312 Jun 1 22:29 redo02.log -rw-r----- 1 oracle11 oinstall 9814016 Jun 1 22:30 control01.ctl
从上面的查询结果可以看到表空间test已经恢复，但现在test表空间是脱机状态。
6.将表空间test联机，并查询表test.t1来验证恢复是否真正成功.
RMAN> sql 'alter tablespace test online';
sql statement: alter tablespace test online
starting full resync of recovery catalog
full resync complete
SQL> select tablespace_name,status from dba_tablespaces;
TABLESPACE_NAME STATUS
------------------------------ ---------
SYSTEM ONLINE
SYSAUX ONLINE
UNDOTBS1 ONLINE
TEMP ONLINE
USERS ONLINE
TEST ONLINE
6 rows selected.
SQL> select count(*) from test.t1;
COUNT(*)
----------
86031
从上面的查询结果可以看到被删除的表空间test已经恢复到被删除之前的时间点，表test.t1的记录已经恢复回来。