表空间时点恢复，是Oracle在基于冷备，热备恢复以外的一种以表空间为粒度的，不完全恢复的形式来将表空间恢复到过去某个特定的时间点的一种恢复方式。它整合了RMAN以及DataPump这2个备份恢复工具来实现时点恢复。
表空间时点恢复适用用以下场景：
错误的批处理作业或数据操作语言DML
恢复数据定义语言（DDL）后丢失的数据操作，改变表的结构。不能使用闪回表将表倒回结构更改点之前，例如截断表(truncate)操作。
恢复drop时使用了purge选项的表
恢复存在逻辑错误的表
恢复被删除的表空间，RMAN可以在被drop的表空间上面执行TSPITR
与全库级别闪回相比，表空间时点恢复停留在表空间级别，影响较全库闪回较小。其次，数据库闪回功能需要承担维护闪回日志开启的相关性能开销。
实际操作：
大概思路：数据库的全备以及所有归档都完整的情况下，truncate掉一张表的数据，通过tspitr来指定时间点恢复整个表空间，以达到恢复表的目的。
环境：RHEL 6.3 + Oracle 11.2.0.3
SQL> select * from v$version where rownum<2;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production确保是归档模式：
SQL> select log_mode from v$database;
LOG_MODE
------------
ARCHIVELOG建立测试的表空间，tbs_tspitr1存放data,tbs_tspitr2存放index
SQL> create tablespace tbs_tspitr1 datafile '/u01/oradata/orcl/tbs_tspitr1_01.dbf' size 20m;
Tablespace created.
SQL> create tablespace tbs_tspitr2 datafile '/u01/oradata/orcl/tbs_tspitr2_01.dbf' size 20m;
Tablespace created.
SQL> create table tb_test tablespace tbs_tspitr1 as select * from all_tables;
Table created.
SQL> create unique index pk_tb_test on tb_test(OWNER,TABLE_NAME) tablespace tbs_tspitr2;
Index created.
SQL> alter table tb_test add primary key(OWNER,TABLE_NAME) using index pk_tb_test;
Table altered.
SQL> select count(1) from tb_test;
COUNT(1)
----------
4240验证表空间的依赖性关系：
SQL> col obj1_owner for a10
SQL> col obj2_owner for a10
SQL> select OBJ1_OWNER, OBJ1_NAME, TS1_NAME, OBJ2_OWNER, OBJ2_NAME, TS2_NAME
2 from TS_PITR_CHECK
3 where (ts1_name = 'TBS_TSPITR1' and ts2_name != 'TBS_TSPITR1') or (ts1_name != 'TBS_TSPITR1' and ts2_nam e = 'TBS_TSPITR1');
OBJ1_OWNER OBJ1_NAME TS1_NAME OBJ2_OWNER OBJ2_NAME TS2_NAME
---------- ------------------------------ ------------------------------ ---------- ------------------------------ ------------------------------
SYS TB_TEST TBS_TSPITR1 SYS PK_TB_TEST TBS_TSPITR2
SYS TB_TEST TBS_TSPITR1 -1
SQL> select OBJ1_OWNER, OBJ1_NAME, TS1_NAME, OBJ2_OWNER, OBJ2_NAME, TS2_NAME
2 from TS_PITR_CHECK
3 where (ts1_name in ('TBS_TSPITR1','TBS_TSPITR2') and ts2_name not in ('TBS_TSPITR1','TBS_TSPITR2')) or (ts1_name not in ('TBS_TSPITR1','TBS_TSPITR2') and ts2_name in ('TBS_TSPITR1','TBS_TSPITR2'));
OBJ1_OWNER OBJ1_NAME TS1_NAME OBJ2_OWNER OBJ2_NAME TS2_NAME
---------- ------------------------------ ------------------------------ ---------- ------------------------------ ------------------------------
SYS PK_TB_TEST TBS_TSPITR2 -1
SYS TB_TEST TBS_TSPITR1 -1
也可以通过 DBMS_TTS.TRANSPORT_SET_CHECK检查
SQL> BEGIN
2 DBMS_TTS.TRANSPORT_SET_CHECK('TBS_TSPITR1', TRUE,TRUE);
3 END;
4 /
PL/SQL procedure successfully completed.
SQL> SELECT * FROM TRANSPORT_SET_VIOLATIONS;
VIOLATIONS
-------------------------------------------------------------------------------------------
ORA-39908: Index SYS.PK_TB_TEST in tablespace TBS_TSPITR2 enforces primary constraints of table SYS.TB_TEST in tablespace TBS_TSPITR1.
SQL> BEGIN
2 DBMS_TTS.TRANSPORT_SET_CHECK('TBS_TSPITR1,TBS_TSPITR2', TRUE,TRUE);
3 END;
4 /
PL/SQL procedure successfully completed.
SQL> SELECT * FROM TRANSPORT_SET_VIOLATIONS;
no rows selected
必须这两个表空间同时恢复才会没有问题。
下面开始做一次全备份：
[oracle@qht115 rman_script]$ ./rman0.sh
建立auxiliary所需要的恢复路径：
[oracle@qht115 rman_script]$ mkdir -p /u01/orabak/auxiliary
删除表tb_test的内容，并记录下时间点：
SQL> set time on;
09:17:56 SQL> truncate table tb_test;
Table truncated.
09:19:32 SQL> set time off;
查询执行TSPITR后会丢失的对象
select owner, name, tablespace_name, creation_time
from TS_PITR_OBJECTS_TO_BE_DROPPED
where tablespace_name in ('TBS_TSPITR1','TBS_TSPITR2')
and creation_time > to_date('2018-09-05 09:17:56','yyyy-mm-dd hh24:mi:ss');如果这个查询有数据的话，最好先expdp导出这些对象的备份，待恢复表空间后，再导入这些对象。
当然如果确定这些对象是没有用的，可以直接忽略。
开始全自动的恢复：
RMAN> recover tablespace tbs_tspitr1,tbs_tspitr2 until time "to_date('2018-09-05 09:17:56','yyyy-mm-dd hh24:mi:ss')" auxiliary destination '/u01/orabak/auxiliary';
Starting recover at 05-SEP-18
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=237 device type=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: SID=14 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
--通过默认的参数建立clone的instance
Creating automatic instance, with SID='Ezsz'
initialization parameters used for automatic instance:
db_name=ORCL
db_unique_name=Ezsz_tspitr_ORCL
compatible=11.2.0
db_block_size=8192
db_files=200
sga_target=280M
processes=50
db_create_file_dest=/u01/orabak/auxiliary
log_archive_dest_1='location=/u01/orabak/auxiliary'
#No auxiliary parameter file used
starting up automatic instance ORCL
Oracle instance started
Total System Global Area 292278272 bytes
Fixed Size 2227744 bytes
Variable Size 100663776 bytes
Database Buffers 184549376 bytes
Redo Buffers 4837376 bytes
Automatic instance created
Running TRANSPORT_SET_CHECK on recovery set tablespaces
TRANSPORT_SET_CHECK completed successfully
--恢复控制文件打开数据库
contents of Memory Script:
{
# set requested point in time
set until time "to_date('2018-09-05 09:17:56','yyyy-mm-dd hh24:mi:ss')";
# 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;';
}
executing Memory Script
executing command: SET until clause
Starting restore at 05-SEP-18
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=58 device type=DISK
allocated channel: ORA_AUX_DISK_2
channel ORA_AUX_DISK_2: SID=10 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 /u01/RMAN0/c-1166343071-20180905-01
channel ORA_AUX_DISK_1: piece handle=/u01/RMAN0/c-1166343071-20180905-01 tag=TAG20180905T090849
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u01/orabak/auxiliary/ORCL/controlfile/o1_mf_frydc53k_.ctl
Finished restore at 05-SEP-18
sql statement: alter database mount clone database
sql statement: alter system archive log current
sql statement: begin dbms_backup_restore.AutoBackupFlag(FALSE); end;
--将正式库的TBS_TSPITR1和TBS_TSPITR2 offline
contents of Memory Script:
{
# set requested point in time
set until time "to_date('2018-09-05 09:17:56','yyyy-mm-dd hh24:mi:ss')";
plsql <<<-- tspitr_2
declare
sqlstatement varchar2(512);
offline_not_needed exception;
pragma exception_init(offline_not_needed, -01539);
begin
sqlstatement := 'alter tablespace '|| 'TBS_TSPITR1' ||' offline immediate';
krmicd.writeMsg(6162, sqlstatement);
krmicd.execSql(sqlstatement);
exception
when offline_not_needed then
null;
end; >>>;
plsql <<<-- tspitr_2
declare
sqlstatement varchar2(512);
offline_not_needed exception;
pragma exception_init(offline_not_needed, -01539);
begin
sqlstatement := 'alter tablespace '|| 'TBS_TSPITR2' ||' offline immediate';
krmicd.writeMsg(6162, sqlstatement);
krmicd.execSql(sqlstatement);
exception
when offline_not_needed then
null;
end; >>>;
--恢复datafiles到clone database
# set destinations for recovery set and auxiliary set datafiles
set newname for clone datafile 1 to new;
set newname for clone datafile 2 to new;
set newname for clone datafile 3 to new;
set newname for clone tempfile 1 to new;
set newname for datafile 8 to
"/u01/oradata/orcl/tbs_tspitr1_01.dbf";
set newname for datafile 11 to
"/u01/oradata/orcl/tbs_tspitr2_01.dbf";
# switch all tempfiles
switch clone tempfile all;
# restore the tablespaces in the recovery set and the auxiliary set
restore clone datafile 1, 2, 3, 8, 11;
switch clone datafile all;
}
executing Memory Script
executing command: SET until clause
sql statement: alter tablespace TBS_TSPITR1 offline immediate
sql statement: alter tablespace TBS_TSPITR2 offline immediate
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
renamed tempfile 1 to /u01/orabak/auxiliary/ORCL/datafile/o1_mf_temp_%u_.tmp in control file
Starting restore at 05-SEP-18
using channel ORA_AUX_DISK_1
using channel ORA_AUX_DISK_2
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 00008 to /u01/oradata/orcl/tbs_tspitr1_01.dbf
channel ORA_AUX_DISK_1: restoring datafile 00011 to /u01/oradata/orcl/tbs_tspitr2_01.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u01/RMAN0/db0d4tcb6q1_420_1.bak
channel ORA_AUX_DISK_2: starting datafile backup set restore
channel ORA_AUX_DISK_2: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_2: restoring datafile 00001 to /u01/orabak/auxiliary/ORCL/datafile/o1_mf_system_%u_.dbf
channel ORA_AUX_DISK_2: reading from backup piece /u01/RMAN0/db0d5tcb6tk_421_1.bak
channel ORA_AUX_DISK_1: piece handle=/u01/RMAN0/db0d4tcb6q1_420_1.bak tag=TAG20180905T085009
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:03
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 00002 to /u01/orabak/auxiliary/ORCL/datafile/o1_mf_undotbs1_%u_.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u01/RMAN0/db0d6tcb6vb_422_1.bak
channel ORA_AUX_DISK_1: piece handle=/u01/RMAN0/db0d6tcb6vb_422_1.bak tag=TAG20180905T085009
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:35
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 00003 to /u01/orabak/auxiliary/ORCL/datafile/o1_mf_sysaux_%u_.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u01/RMAN0/db0d7tcb71c_423_1.bak
channel ORA_AUX_DISK_2: piece handle=/u01/RMAN0/db0d5tcb6tk_421_1.bak tag=TAG20180905T085009
channel ORA_AUX_DISK_2: restored backup piece 1
channel ORA_AUX_DISK_2: restore complete, elapsed time: 00:01:13
channel ORA_AUX_DISK_1: piece handle=/u01/RMAN0/db0d7tcb71c_423_1.bak tag=TAG20180905T085009
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:25
Finished restore at 05-SEP-18
datafile 1 switched to datafile copy
input datafile copy RECID=30 STAMP=986031082 file name=/u01/orabak/auxiliary/ORCL/datafile/o1_mf_system_frydch5x_.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=31 STAMP=986031082 file name=/u01/orabak/auxiliary/ORCL/datafile/o1_mf_undotbs1_frydcl46_.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=32 STAMP=986031082 file name=/u01/orabak/auxiliary/ORCL/datafile/o1_mf_sysaux_fryddo82_.dbf
--recover clone database，之后resetlogs打开clone数据库
contents of Memory Script:
{
# set requested point in time
set until time "to_date('2018-09-05 09:17:56','yyyy-mm-dd hh24:mi:ss')";
# online the datafiles restored or switched
sql clone "alter database datafile 1 online";
sql clone "alter database datafile 2 online";
sql clone "alter database datafile 3 online";
sql clone "alter database datafile 8 online";
sql clone "alter database datafile 11 online";
# recover and open resetlogs
recover clone database tablespace "TBS_TSPITR1", "TBS_TSPITR2", "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 2 online
sql statement: alter database datafile 3 online
sql statement: alter database datafile 8 online
sql statement: alter database datafile 11 online
Starting recover at 05-SEP-18
using channel ORA_AUX_DISK_1
using channel ORA_AUX_DISK_2
starting media recovery
archived log for thread 1 with sequence 22 is already on disk as file /u01/app/oracle/admin/orcl/flash_recovery_area/ORCL/archivelog/2018_09_05/o1_mf_1_22_frydcds2_.arc
channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=20
channel ORA_AUX_DISK_1: reading from backup piece /u01/RMAN0/archdrtcb7kv_443_1.bak
channel ORA_AUX_DISK_2: starting archived log restore to default destination
channel ORA_AUX_DISK_2: restoring archived log
archived log thread=1 sequence=21
channel ORA_AUX_DISK_2: reading from backup piece /u01/RMAN0/archdstcb7l0_444_1.bak
channel ORA_AUX_DISK_1: piece handle=/u01/RMAN0/archdrtcb7kv_443_1.bak tag=TAG20180905T085948
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
archived log file name=/u01/orabak/auxiliary/1_20_985534347.dbf thread=1 sequence=20
channel clone_default: deleting archived log(s)
archived log file name=/u01/orabak/auxiliary/1_20_985534347.dbf RECID=436 STAMP=986031085
channel ORA_AUX_DISK_2: piece handle=/u01/RMAN0/archdstcb7l0_444_1.bak tag=TAG20180905T085948
channel ORA_AUX_DISK_2: restored backup piece 1
channel ORA_AUX_DISK_2: restore complete, elapsed time: 00:00:02
archived log file name=/u01/orabak/auxiliary/1_21_985534347.dbf thread=1 sequence=21
channel clone_default: deleting archived log(s)
archived log file name=/u01/orabak/auxiliary/1_21_985534347.dbf RECID=435 STAMP=986031085
archived log file name=/u01/app/oracle/admin/orcl/flash_recovery_area/ORCL/archivelog/2018_09_05/o1_mf_1_22_frydcds2_.arc thread=1 sequence=22
media recovery complete, elapsed time: 00:00:05
Finished recover at 05-SEP-18
database opened
--将clone的tablespace设为readonly,在正式库和clone库都建立一个dump_dir，以用来expdp和impdp操作
contents of Memory Script:
{
# make read only the tablespace that will be exported
sql clone 'alter tablespace TBS_TSPITR1 read only';
sql clone 'alter tablespace TBS_TSPITR2 read only';
# create directory for datapump import
sql "create or replace directory TSPITR_DIROBJ_DPDIR as ''
/u01/orabak/auxiliary''";
# create directory for datapump export
sql clone "create or replace directory TSPITR_DIROBJ_DPDIR as ''
/u01/orabak/auxiliary''";
}
executing Memory Script
sql statement: alter tablespace TBS_TSPITR1 read only
sql statement: alter tablespace TBS_TSPITR2 read only
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01/orabak/auxiliary''
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01/orabak/auxiliary''
--expdp操作
Performing export of metadata...
EXPDP> Starting "SYS"."TSPITR_EXP_Ezsz":
EXPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
EXPDP> Processing object type TRANSPORTABLE_EXPORT/INDEX/INDEX
EXPDP> Processing object type TRANSPORTABLE_EXPORT/CONSTRAINT/CONSTRAINT
EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS
EXPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
EXPDP> Master table "SYS"."TSPITR_EXP_Ezsz" successfully loaded/unloaded
EXPDP> ******************************************************************************
EXPDP> Dump file set for SYS.TSPITR_EXP_Ezsz is:
EXPDP> /u01/orabak/auxiliary/tspitr_Ezsz_31484.dmp
EXPDP> ******************************************************************************
EXPDP> Datafiles required for transportable tablespace TBS_TSPITR1:
EXPDP> /u01/oradata/orcl/tbs_tspitr1_01.dbf
EXPDP> Datafiles required for transportable tablespace TBS_TSPITR2:
EXPDP> /u01/oradata/orcl/tbs_tspitr2_01.dbf
EXPDP> Job "SYS"."TSPITR_EXP_Ezsz" successfully completed at 09:35:58
Export completed
--删除正式库的指定表空间
contents of Memory Script:
{
# shutdown clone before import
shutdown clone immediate
# drop target tablespaces before importing them back
sql 'drop tablespace TBS_TSPITR1 including contents keep datafiles';
sql 'drop tablespace TBS_TSPITR2 including contents keep datafiles';
}
executing Memory Script
database closed
database dismounted
Oracle instance shut down
sql statement: drop tablespace TBS_TSPITR1 including contents keep datafiles
sql statement: drop tablespace TBS_TSPITR2 including contents keep datafiles
--impdp操作
Performing import of metadata...
IMPDP> Master table "SYS"."TSPITR_IMP_Ezsz" successfully loaded/unloaded
IMPDP> Starting "SYS"."TSPITR_IMP_Ezsz":
IMPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
IMPDP> Processing object type TRANSPORTABLE_EXPORT/INDEX/INDEX
IMPDP> Processing object type TRANSPORTABLE_EXPORT/CONSTRAINT/CONSTRAINT
IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS
IMPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
IMPDP> Job "SYS"."TSPITR_IMP_Ezsz" successfully completed at 09:38:53
Import completed
--将导入的表空间设为read write并且offline
contents of Memory Script:
{
# make read write and offline the imported tablespaces
sql 'alter tablespace TBS_TSPITR1 read write';
sql 'alter tablespace TBS_TSPITR1 offline';
sql 'alter tablespace TBS_TSPITR2 read write';
sql 'alter tablespace TBS_TSPITR2 offline';
# enable autobackups after TSPITR is finished
sql 'begin dbms_backup_restore.AutoBackupFlag(TRUE); end;';
}
executing Memory Script
sql statement: alter tablespace TBS_TSPITR1 read write
sql statement: alter tablespace TBS_TSPITR1 offline
sql statement: alter tablespace TBS_TSPITR2 read write
sql statement: alter tablespace TBS_TSPITR2 offline
sql statement: begin dbms_backup_restore.AutoBackupFlag(TRUE); end;
--最后移除clone instnace的相关数据
Removing automatic instance
Automatic instance removed
auxiliary instance file /u01/orabak/auxiliary/ORCL/datafile/o1_mf_temp_frydk0tb_.tmp deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/onlinelog/o1_mf_6_frydjpdj_.log deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/onlinelog/o1_mf_5_frydjhrt_.log deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/onlinelog/o1_mf_4_frydj946_.log deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/onlinelog/o1_mf_3_frydj2cj_.log deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/onlinelog/o1_mf_2_frydhw24_.log deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/onlinelog/o1_mf_1_frydholy_.log deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/datafile/o1_mf_sysaux_fryddo82_.dbf deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/datafile/o1_mf_undotbs1_frydcl46_.dbf deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/datafile/o1_mf_system_frydch5x_.dbf deleted
auxiliary instance file /u01/orabak/auxiliary/ORCL/controlfile/o1_mf_frydc53k_.ctl deleted
Finished recover at 05-SEP-18
恢复完成后，最好是备份一下恢复出来的表空间
RMAN> backup tablespace tbs_tspitr1,tbs_tspitr2 format '/u01/RMAN0/tbs_%d_%U';
SQL> select tablespace_name,status from dba_tablespaces where tablespace_name like '%TSPI%';
TABLESPACE_NAME STATUS
------------------------------ ---------
TBS_TSPITR1 OFFLINE
TBS_TSPITR2 OFFLINE
将表空间online后检查数据：
SQL> alter tablespace TBS_TSPITR1 online;
Tablespace altered.
SQL> alter tablespace TBS_TSPITR2 online;
Tablespace altered.
SQL> select count(1) from tb_test;
COUNT(1)
----------
4240
数据都已正确恢复！