oracle exp 00006,Oracle 12.1新特性----使用RMAN从备份中实现recover table
Oracle 12.1新特性----使用RMAN從備份中實現recover table
發布時間：2020-06-26 19:41:44
來源：51CTO
閱讀：4750
作者：hbxztc
在Oracle12c版本之前，使用RMAN能恢復的級別為數據庫級別和表空間級別，如果只有一張表需要恢復，而在數據庫級別或表空間級別做恢復，影響范圍就太大了。因此12.2版本中提供了一個新特性使用RMAN在表級別做恢復，并且恢復過程中不影響數據庫的正常使用。這一功能不僅可以恢復表，還可以恢復表分區。
To recover a table or table partition, you must have a full backup of undo,?SYSTEM,?SYSAUX, and the tablespace that contains the table or table partition.
使用recover table的一些限制條件：
When you use the?RECOVER?command to recover tables or table partitions contained in an RMAN backup, the following limitations exist.Tables and table partitions belonging to?SYS?schema cannot be recovered.
Tables and table partitions from?SYSTEM?and?SYSAUX?tablespaces cannot be recovered.
Tables and table partitions on standby databases cannot be recovered.
Tables with named?NOT NULL?constraints cannot be recovered with the?REMAP?option.
下面在12.2版本上做表級別恢復的實驗sys@ORA12C>select?*?from?v$version;
BANNER?????CON_ID
--------------------------------------------------------------------------------?----------
Oracle?Database?12c?Enterprise?Edition?Release?12.2.0.1.0?-?64bit?Production??0
PL/SQL?Release?12.2.0.1.0?-?Production??0
CORE12.2.0.1.0Production??0
TNS?for?Linux:?Version?12.2.0.1.0?-?Production??0
NLSRTL?Version?12.2.0.1.0?-?Production??0
1、創建一個數據庫的全備RMAN>?backup?database;
Starting?backup?at?20170720?17:12:05
using?target?database?control?file?instead?of?recovery?catalog
allocated?channel:?ORA_DISK_1
channel?ORA_DISK_1:?SID=36?device?type=DISK
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=+DATA/ORA12C/DATAFILE/system.256.949764433
channel?ORA_DISK_1:?starting?piece?1?at?20170720?17:12:07
channel?ORA_DISK_1:?finished?piece?1?at?20170720?17:12:22
piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/0vs9rar7_1_1?tag=TAG20170720T171206?comment=NONE
channel?ORA_DISK_1:?backup?set?complete,?elapsed?time:?00:00:15
channel?ORA_DISK_1:?starting?full?datafile?backup?set
channel?ORA_DISK_1:?specifying?datafile(s)?in?backup?set
input?datafile?file?number=00004?name=+DATA/ORA12C/DATAFILE/users.266.949764465
channel?ORA_DISK_1:?starting?piece?1?at?20170720?17:12:22
channel?ORA_DISK_1:?finished?piece?1?at?20170720?17:12:23
piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/10s9rarm_1_1?tag=TAG20170720T171206?comment=NONE
channel?ORA_DISK_1:?backup?set?complete,?elapsed?time:?00:00:01
channel?ORA_DISK_1:?starting?full?datafile?backup?set
channel?ORA_DISK_1:?specifying?datafile(s)?in?backup?set
input?datafile?file?number=00002?name=+DATA/ORA12C/DATAFILE/sysaux.261.949764491
channel?ORA_DISK_1:?starting?piece?1?at?20170720?17:12:23
channel?ORA_DISK_1:?finished?piece?1?at?20170720?17:12:38
piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/11s9rarn_1_1?tag=TAG20170720T171206?comment=NONE
channel?ORA_DISK_1:?backup?set?complete,?elapsed?time:?00:00:15
channel?ORA_DISK_1:?starting?full?datafile?backup?set
channel?ORA_DISK_1:?specifying?datafile(s)?in?backup?set
input?datafile?file?number=00005?name=+DATA/ORA12C/DATAFILE/examples.265.949764515
channel?ORA_DISK_1:?starting?piece?1?at?20170720?17:12:38
channel?ORA_DISK_1:?finished?piece?1?at?20170720?17:12:39
piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/12s9ras6_1_1?tag=TAG20170720T171206?comment=NONE
channel?ORA_DISK_1:?backup?set?complete,?elapsed?time:?00:00:01
channel?ORA_DISK_1:?starting?full?datafile?backup?set
channel?ORA_DISK_1:?specifying?datafile(s)?in?backup?set
input?datafile?file?number=00008?name=/tmp/FY_RST_DATA.DAT
input?datafile?file?number=00007?name=/tmp/FY_REC_DATA.DAT
input?datafile?file?number=00003?name=+DATA/ORA12C/DATAFILE/undotbs1.264.949764541
input?datafile?file?number=00006?name=+DATA/ORA12C/DATAFILE/t_move.dbf
channel?ORA_DISK_1:?starting?piece?1?at?20170720?17:12:40
channel?ORA_DISK_1:?finished?piece?1?at?20170720?17:12:41
piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/13s9ras8_1_1?tag=TAG20170720T171206?comment=NONE
channel?ORA_DISK_1:?backup?set?complete,?elapsed?time:?00:00:01
Finished?backup?at?20170720?17:12:41
Starting?Control?File?and?SPFILE?Autobackup?at?20170720?17:12:41
piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/c-326793150-20170720-00?comment=NONE
Finished?Control?File?and?SPFILE?Autobackup?at?20170720?17:12:42
2、創建測試表，插入測試數據并記錄中間的scn號zx@ORA12C>create?table?t2?(id?number,name?varchar2(10),birthday?date);
Table?created.
zx@ORA12C>insert?into?t2?values(1,'zx',sysdate);
1?row?created.
zx@ORA12C>commit;
Commit?complete.
zx@ORA12C>select?current_scn?from?v$database;
CURRENT_SCN
-----------
650101
zx@ORA12C>insert?into?t2?values(2,'lx',sysdate);
1?row?created.
zx@ORA12C>commit;
Commit?complete.
zx@ORA12C>select?*?from?t2;
ID?NAME???????BIRTHDAY
----------?----------?-----------------
1?zx??????20170720?17:18:52
2?lx??????20170720?17:19:34
3、執行表級別恢復，使用remap table參數不覆蓋原表，恢復成t2_r表RMAN>?recover?table?zx.t2?until?scn?650101?remap?table?zx.t2:t2_r?auxiliary?destination?'/tmp';
Starting?recover?at?20170720?17:23:50
current?log?archived
using?channel?ORA_DISK_1
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='htzD'
initialization?parameters?used?for?automatic?instance:
db_name=ORA12C
db_unique_name=htzD_pitr_ORA12C
compatible=12.2.0
db_block_size=8192
db_files=200
diagnostic_dest=/u01/app/oracle
_system_trig_enabled=FALSE
sga_target=1712M
processes=200
db_create_file_dest=/tmp
log_archive_dest_1='location=/tmp'
#No?auxiliary?parameter?file?used
starting?up?automatic?instance?ORA12C
Oracle?instance?started
Total?System?Global?Area????1795162112?bytes
Fixed?Size?????????????????????8621760?bytes
Variable?Size????????????????436207936?bytes
Database?Buffers????????????1342177280?bytes
Redo?Buffers???????????????????8155136?bytes
Automatic?instance?created
contents?of?Memory?Script:
{
#?set?requested?point?in?time
set?until??scn?650101;
#?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?20170720?17:24:12
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?/u01/app/oracle/product/12.2/db_home1/dbs/c-326793150-20170720-00
channel?ORA_AUX_DISK_1:?piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/c-326793150-20170720-00?tag=TAG20170720T171241
channel?ORA_AUX_DISK_1:?restored?backup?piece?1
channel?ORA_AUX_DISK_1:?restore?complete,?elapsed?time:?00:00:01
output?file?name=/tmp/ORA12C/controlfile/o1_mf_dq0xoxot_.ctl
Finished?restore?at?20170720?17:24:14
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??scn?650101;
#?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?/tmp/ORA12C/datafile/o1_mf_temp_%u_.tmp?in?control?file
Starting?restore?at?20170720?17:24:19
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?/tmp/ORA12C/datafile/o1_mf_system_%u_.dbf
channel?ORA_AUX_DISK_1:?reading?from?backup?piece?/u01/app/oracle/product/12.2/db_home1/dbs/0vs9rar7_1_1
channel?ORA_AUX_DISK_1:?piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/0vs9rar7_1_1?tag=TAG20170720T171206
channel?ORA_AUX_DISK_1:?restored?backup?piece?1
channel?ORA_AUX_DISK_1:?restore?complete,?elapsed?time:?00:00:45
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?/tmp/ORA12C/datafile/o1_mf_sysaux_%u_.dbf
channel?ORA_AUX_DISK_1:?reading?from?backup?piece?/u01/app/oracle/product/12.2/db_home1/dbs/11s9rarn_1_1
channel?ORA_AUX_DISK_1:?piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/11s9rarn_1_1?tag=TAG20170720T171206
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?/tmp/ORA12C/datafile/o1_mf_undotbs1_%u_.dbf
channel?ORA_AUX_DISK_1:?reading?from?backup?piece?/u01/app/oracle/product/12.2/db_home1/dbs/13s9ras8_1_1
channel?ORA_AUX_DISK_1:?piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/13s9ras8_1_1?tag=TAG20170720T171206
channel?ORA_AUX_DISK_1:?restored?backup?piece?1
channel?ORA_AUX_DISK_1:?restore?complete,?elapsed?time:?00:00:15
Finished?restore?at?20170720?17:25:55
datafile?1?switched?to?datafile?copy
input?datafile?copy?RECID=16?STAMP=949857956?file?name=/tmp/ORA12C/datafile/o1_mf_system_dq0xp4jt_.dbf
datafile?3?switched?to?datafile?copy
input?datafile?copy?RECID=17?STAMP=949857956?file?name=/tmp/ORA12C/datafile/o1_mf_undotbs1_dq0xrnq2_.dbf
datafile?2?switched?to?datafile?copy
input?datafile?copy?RECID=18?STAMP=949857956?file?name=/tmp/ORA12C/datafile/o1_mf_sysaux_dq0xqkm0_.dbf
contents?of?Memory?Script:
{
#?set?requested?point?in?time
set?until??scn?650101;
#?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?20170720?17:26:02
using?channel?ORA_AUX_DISK_1
starting?media?recovery
archived?log?for?thread?1?with?sequence?2?is?already?on?disk?as?file?/u01/app/oracle/product/12.2/db_home1/dbs/arch2_2_949077789.dbf
archived?log?for?thread?1?with?sequence?3?is?already?on?disk?as?file?/u01/app/oracle/product/12.2/db_home1/dbs/arch2_3_949077789.dbf
archived?log?file?name=/u01/app/oracle/product/12.2/db_home1/dbs/arch2_2_949077789.dbf?thread=1?sequence=2
archived?log?file?name=/u01/app/oracle/product/12.2/db_home1/dbs/arch2_3_949077789.dbf?thread=1?sequence=3
media?recovery?complete,?elapsed?time:?00:00:02
Finished?recover?at?20170720?17:26:07
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?=
''/tmp/ORA12C/controlfile/o1_mf_dq0xoxot_.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????1795162112?bytes
Fixed?Size?????????????????????8621760?bytes
Variable?Size????????????????436207936?bytes
Database?Buffers????????????1342177280?bytes
Redo?Buffers???????????????????8155136?bytes
sql?statement:?alter?system?set??control_files?=???''/tmp/ORA12C/controlfile/o1_mf_dq0xoxot_.ctl''?comment=?''RMAN?set''?scope=spfile
Oracle?instance?shut?down
connected?to?auxiliary?database?(not?started)
Oracle?instance?started
Total?System?Global?Area????1795162112?bytes
Fixed?Size?????????????????????8621760?bytes
Variable?Size????????????????436207936?bytes
Database?Buffers????????????1342177280?bytes
Redo?Buffers???????????????????8155136?bytes
sql?statement:?alter?database?mount?clone?database
contents?of?Memory?Script:
{
#?set?requested?point?in?time
set?until??scn?650101;
#?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?20170720?17:27:18
allocated?channel:?ORA_AUX_DISK_1
channel?ORA_AUX_DISK_1:?SID=23?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?/tmp/HTZD_PITR_ORA12C/datafile/o1_mf_users_%u_.dbf
channel?ORA_AUX_DISK_1:?reading?from?backup?piece?/u01/app/oracle/product/12.2/db_home1/dbs/10s9rarm_1_1
channel?ORA_AUX_DISK_1:?piece?handle=/u01/app/oracle/product/12.2/db_home1/dbs/10s9rarm_1_1?tag=TAG20170720T171206
channel?ORA_AUX_DISK_1:?restored?backup?piece?1
channel?ORA_AUX_DISK_1:?restore?complete,?elapsed?time:?00:00:25
Finished?restore?at?20170720?17:27:44
datafile?4?switched?to?datafile?copy
input?datafile?copy?RECID=20?STAMP=949858064?file?name=/tmp/HTZD_PITR_ORA12C/datafile/o1_mf_users_dq0xvq9q_.dbf
contents?of?Memory?Script:
{
#?set?requested?point?in?time
set?until??scn?650101;
#?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?20170720?17:27:44
using?channel?ORA_AUX_DISK_1
starting?media?recovery
archived?log?for?thread?1?with?sequence?2?is?already?on?disk?as?file?/u01/app/oracle/product/12.2/db_home1/dbs/arch2_2_949077789.dbf
archived?log?for?thread?1?with?sequence?3?is?already?on?disk?as?file?/u01/app/oracle/product/12.2/db_home1/dbs/arch2_3_949077789.dbf
archived?log?file?name=/u01/app/oracle/product/12.2/db_home1/dbs/arch2_2_949077789.dbf?thread=1?sequence=2
archived?log?file?name=/u01/app/oracle/product/12.2/db_home1/dbs/arch2_3_949077789.dbf?thread=1?sequence=3
media?recovery?complete,?elapsed?time:?00:00:01
Finished?recover?at?20170720?17:27:48
database?opened
contents?of?Memory?Script:
{
#?create?directory?for?datapump?import
sql?"create?or?replace?directory?TSPITR_DIROBJ_DPDIR?as?''
/tmp''";
#?create?directory?for?datapump?export
sql?clone?"create?or?replace?directory?TSPITR_DIROBJ_DPDIR?as?''
/tmp''";
}
executing?Memory?Script
sql?statement:?create?or?replace?directory?TSPITR_DIROBJ_DPDIR?as?''/tmp''
sql?statement:?create?or?replace?directory?TSPITR_DIROBJ_DPDIR?as?''/tmp''
Performing?export?of?tables...
EXPDP>?Starting?"SYS"."TSPITR_EXP_htzD_mhEh":
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/TABLE
EXPDP>?.?.?exported?"ZX"."T2"???????????????????????????????????5.898?KB???????1?rows
EXPDP>?Master?table?"SYS"."TSPITR_EXP_htzD_mhEh"?successfully?loaded/unloaded
EXPDP>?******************************************************************************
EXPDP>?Dump?file?set?for?SYS.TSPITR_EXP_htzD_mhEh?is:
EXPDP>???/tmp/tspitr_htzD_98436.dmp
EXPDP>?Job?"SYS"."TSPITR_EXP_htzD_mhEh"?successfully?completed?at?Thu?Jul?20?17:29:48?2017?elapsed?0?00:01:05
Export?completed
contents?of?Memory?Script:
{
#?shutdown?clone?before?import
shutdown?clone?abort
}
executing?Memory?Script
Oracle?instance?shut?down
Performing?import?of?tables...
IMPDP>?Master?table?"SYS"."TSPITR_IMP_htzD_bhqf"?successfully?loaded/unloaded
IMPDP>?Starting?"SYS"."TSPITR_IMP_htzD_bhqf":
IMPDP>?Processing?object?type?TABLE_EXPORT/TABLE/TABLE
IMPDP>?Processing?object?type?TABLE_EXPORT/TABLE/TABLE_DATA
IMPDP>?.?.?imported?"ZX"."T2_R"?????????????????????????????????5.898?KB???????1?rows
IMPDP>?Processing?object?type?TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
IMPDP>?Job?"SYS"."TSPITR_IMP_htzD_bhqf"?successfully?completed?at?Thu?Jul?20?17:30:10?2017?elapsed?0?00:00:10
Import?completed
Removing?automatic?instance
Automatic?instance?removed
auxiliary?instance?file?/tmp/ORA12C/datafile/o1_mf_temp_dq0xskvm_.tmp?deleted
auxiliary?instance?file?/tmp/HTZD_PITR_ORA12C/onlinelog/o1_mf_3_dq0xwo3d_.log?deleted
auxiliary?instance?file?/tmp/HTZD_PITR_ORA12C/onlinelog/o1_mf_2_dq0xwo3d_.log?deleted
auxiliary?instance?file?/tmp/HTZD_PITR_ORA12C/onlinelog/o1_mf_1_dq0xwo0q_.log?deleted
auxiliary?instance?file?/tmp/HTZD_PITR_ORA12C/datafile/o1_mf_users_dq0xvq9q_.dbf?deleted
auxiliary?instance?file?/tmp/ORA12C/datafile/o1_mf_sysaux_dq0xqkm0_.dbf?deleted
auxiliary?instance?file?/tmp/ORA12C/datafile/o1_mf_undotbs1_dq0xrnq2_.dbf?deleted
auxiliary?instance?file?/tmp/ORA12C/datafile/o1_mf_system_dq0xp4jt_.dbf?deleted
auxiliary?instance?file?/tmp/ORA12C/controlfile/o1_mf_dq0xoxot_.ctl?deleted
auxiliary?instance?file?tspitr_htzD_98436.dmp?deleted
Finished?recover?at?20170720?17:30:13
4、驗證結果，查詢t2_r表zx@ORA12C>select?*?from?t2_r;
ID?NAME???????BIRTHDAY
----------?----------?-----------------
1?zx??????20170720?17:18:52
5、即使表t2做了DDL操作修改了表結構，也可以用這種方法進行恢復--表t2添加一個字段
zx@ORA12C>alter?table?t2?add?address?varchar2(10);
Table?altered.
--恢復表到t2_r2
RMAN>?recover?table?zx.t2?until?scn?650101?remap?table?zx.t2:t2_r2?auxiliary?destination?'/tmp';
Starting?recover?at?20170720?17:57:00
using?channel?ORA_DISK_1
RMAN-05026:?warning:?presuming?following?set?of?tablespaces?applies?to?specified?point-in-time
......
Finished?recover?at?20170720?18:02:03
--驗證表t2_r2
zx@ORA12C>select?*?from?t2_r2;
ID?NAME???????BIRTHDAY
----------?----------?-----------------
1?zx??????20170720?17:18:52
--恢復成功
這一功能很大程度減小了數據恢復的影響范圍。
參考：http://docs.oracle.com/database/121/BRADV/rcmresind.htm#BRADV686
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