oracle truncate 数据恢复 Oracle 数据库误truncate table恢复过程

其他 2018-08-31 00:38:13 阅读次数: 0

关于如何在Oracle 12c 数据库中，使用RMAN恢复被DROP / TRUNCATE / DELETE的表的方法


可用版本:
Oracle Database - Enterprise Edition - Version 12.1.0.1及之后版本
目的：
说明12c关于从RMAN备份中恢复表的新特性 
示例: 

RMAN> recover table pd.t1 OF PLUGGABLE DATABASE PDB1 until time "to_date('11/23/2016 14:58:30','mm/dd/yyyy hh24:mi:ss')" auxiliary destination '/u04/' remap table pd.t1:t12 preview;

如果你不希望生产库受到任何影响，可以使用以下步骤来进行PITR 时间点恢复来对drop/truncate的表进行恢复。


解决方案：

  • 首先，我们需要，我们需要确定进行手工时间点恢复的所需备份，将其拷贝至目标服务器。在测试案例中，我们将备份拷贝并存放在/u03/backup/下。
  • 在目标服务器

        -- 设置ORACLE_SID并将数据库打开至nomount状态
        -- 从备份中抽取spfile并新建pfile

$export ORACLE_SID=ora12mt

$ rman target /

Recovery Manager: Release 12.1.0.2.0 - Production on Thu Dec 15 09:36:25 2016

Copyright (c) 1982, 2014, Oracle and/or its affiliates. All rights reserved.

connected to target database (not started)

RMAN> startup nomount force;

startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u03/app/oracle/product/database/12.1.0.2/dbs/initora12mt.ora'

starting Oracle instance without parameter file for retrieval of spfile
Oracle instance started

Total System Global Area 1073741824 bytes

Fixed Size 2932632 bytes
Variable Size 293601384 bytes
Database Buffers 771751936 bytes
Redo Buffers 5455872 bytes

RMAN> restore spfile from '/u03/backup/o1_mf_s_928681105_d3br9ton_.bkp';

Starting restore at 15-DEC-16
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=6 device type=DISK

channel ORA_DISK_1: restoring spfile from AUTOBACKUP /u03/backup/o1_mf_s_928681105_d3br9ton_.bkp
channel ORA_DISK_1: SPFILE restore from AUTOBACKUP complete
Finished restore at 15-DEC-16

RMAN>shutdown immediate;



<< 通过恢复的spfile新建pfile

SQL> create pfile from spfile;

File created.

SQL>
  • 修改pfile参数如在辅助库上的路径/内存使用等参数，并将辅助库起到nomount状态
$ sqlplus "/as sysdba"

SQL*Plus: Release 12.1.0.2.0 Production on Thu Dec 15 09:52:56 2016

Copyright (c) 1982, 2014, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup nomount pfile='initora12mt.ora';
ORACLE instance started.

Total System Global Area 629145600 bytes
Fixed Size 2927528 bytes
Variable Size 310379608 bytes
Database Buffers 310378496 bytes
Redo Buffers 5459968 bytes
SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
  • 恢复控制文件并mount数据库
$ rman target /

Recovery Manager: Release 12.1.0.2.0 - Production on Thu Dec 15 09:53:40 2016

Copyright (c) 1982, 2014, Oracle and/or its affiliates. All rights reserved.

connected to target database: ORA12MT (not mounted)

RMAN> restore controlfile from '/u03/backup/o1_mf_s_928683729_d3btvsvn_.bkp';

Starting restore at 15-DEC-16
using channel ORA_DISK_1

channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u03/database/oradata/ora12mt/control01.dbf
Finished restore at 15-DEC-16

RMAN> alter database mount;

Statement processed
released channel: ORA_DISK_1
  • Catalog备份片, 执行crosscheck并删除过期备份
RMAN> catalog start with '/u03/backup/' noprompt;

Starting implicit crosscheck backup at 15-DEC-16
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=242 device type=DISK
Crosschecked 6 objects
Finished implicit crosscheck backup at 15-DEC-16

Starting implicit crosscheck copy at 15-DEC-16
using channel ORA_DISK_1
Finished implicit crosscheck copy at 15-DEC-16

searching for all files in the recovery area
cataloging files...
no files cataloged

searching for all files that match the pattern /u03/backup/

List of Files Unknown to the Database
=====================================
File Name: /u03/backup/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp
File Name: /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp
File Name: /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp
File Name: /u03/backup/o1_mf_s_928683729_d3btvsvn_.bkp
File Name: /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp
File Name: /u03/backup/o1_mf_s_928681105_d3br9ton_.bkp
File Name: /u03/backup/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /u03/backup/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp
File Name: /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp
File Name: /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp
File Name: /u03/backup/o1_mf_s_928683729_d3btvsvn_.bkp
File Name: /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp
File Name: /u03/backup/o1_mf_s_928681105_d3br9ton_.bkp
File Name: /u03/backup/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp

RMAN> crosscheck backup;

using channel ORA_DISK_1
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp RECID=3 STAMP=928680915
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/backup/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp RECID=15 STAMP=930650099
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp RECID=4 STAMP=928680918
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp RECID=11 STAMP=930650099
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u04/fra/ora12mt/ORA12MT/37E8C85AD7431EDBE0531602A8C02428/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp RECID=5 STAMP=928681004
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp RECID=10 STAMP=930650099
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u04/fra/ora12mt/ORA12MT/37E8BA3824481B77E0531602A8C080DD/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp RECID=6 STAMP=928681059
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp RECID=13 STAMP=930650099
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp RECID=7 STAMP=928681104
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/backup/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp RECID=9 STAMP=930650099
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u04/fra/ora12mt/ORA12MT/autobackup/2016_11_23/o1_mf_s_928681105_d3br9ton_.bkp RECID=8 STAMP=928681106
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/backup/o1_mf_s_928681105_d3br9ton_.bkp RECID=14 STAMP=930650099
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/backup/o1_mf_s_928683729_d3btvsvn_.bkp RECID=12 STAMP=930650099
Crosschecked 13 objects

RMAN> delete expired backup ;

using channel ORA_DISK_1

List of Backup Pieces
BP Key BS Key Pc# Cp# Status Device Type Piece Name
------- ------- --- --- ----------- ----------- ----------
3 3 1 1 EXPIRED DISK /u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp
4 4 1 1 EXPIRED DISK /u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp
5 5 1 1 EXPIRED DISK /u04/fra/ora12mt/ORA12MT/37E8C85AD7431EDBE0531602A8C02428/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp
6 6 1 1 EXPIRED DISK /u04/fra/ora12mt/ORA12MT/37E8BA3824481B77E0531602A8C080DD/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp
7 7 1 1 EXPIRED DISK /u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp
8 8 1 1 EXPIRED DISK /u04/fra/ora12mt/ORA12MT/autobackup/2016_11_23/o1_mf_s_928681105_d3br9ton_.bkp

Do you really want to delete the above objects (enter YES or NO)? yes
deleted backup piece
backup piece handle=/u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp RECID=3 STAMP=928680915
deleted backup piece
backup piece handle=/u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp RECID=4 STAMP=928680918
deleted backup piece
backup piece handle=/u04/fra/ora12mt/ORA12MT/37E8C85AD7431EDBE0531602A8C02428/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp RECID=5 STAMP=928681004
deleted backup piece
backup piece handle=/u04/fra/ora12mt/ORA12MT/37E8BA3824481B77E0531602A8C080DD/backupset/2016_11_23/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp RECID=6 STAMP=928681059
deleted backup piece
backup piece handle=/u04/fra/ora12mt/ORA12MT/backupset/2016_11_23/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp RECID=7 STAMP=928681104
deleted backup piece
backup piece handle=/u04/fra/ora12mt/ORA12MT/autobackup/2016_11_23/o1_mf_s_928681105_d3br9ton_.bkp RECID=8 STAMP=928681106
Deleted 6 EXPIRED objects
  • 获取数据库结构（需要准备编写恢复脚本）
RMAN> report schema;

using target database control file instead of recovery catalog
RMAN-06139: WARNING: control file is not current for REPORT SCHEMA
Report of database schema for database with db_unique_name ORA12MT

List of Permanent Datafiles
===========================
File Size(MB) Tablespace RB segs Datafile Name
---- -------- -------------------- ------- ------------------------
1 0 SYSTEM *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-SYSTEM_FNO-1_0brcua0p
3 0 SYSAUX *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-SYSAUX_FNO-3_0crcua0s
4 0 UNDOTBS1 *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-UNDOTBS1_FNO-4_0frcua1q
5 0 PDB$SEED:SYSTEM *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-SYSTEM_FNO-5_0grcua21
6 0 USERS *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-USERS_FNO-6_0ircua2f
7 0 PDB$SEED:SYSAUX *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-SYSAUX_FNO-7_0drcua1b
8 0 PDB1:SYSTEM *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-SYSTEM_FNO-8_0hrcua28
9 0 PDB1:SYSAUX *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-SYSAUX_FNO-9_0ercua1i
10 0 PDB1:USERS *** /u04/database/oradata/ora12mt/data_data_D-ORA12MT_I-4146636107_TS-USERS_FNO-10_0jrcua2g
11 0 T1 *** /u04/database/oradata/ora12mt/t1.dbf
12 0 PDB1:T1 *** /u04/database/oradata/ora12mt/t1-pdb1.dbf

List of Temporary Files
=======================
File Size(MB) Tablespace Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- --------------------
1 60 TEMP 32767 /u04/database/oradata/ora12mt/ORA12MT/datafile/o1_mf_temp_ctpogy8o_.tmp
2 20 PDB$SEED:TEMP 32767 /u03/database/oradata/ora12mt/ORA12MT/datafile/pdbseed_temp012016-07-18_05-31-24-PM.dbf
3 20 PDB1:TEMP 32767 /u04/database/oradata/ora12mt/ORA12MT/37E8C85AD7431EDBE0531602A8C02428/datafile/o1_mf_temp_cttxkklv_.tmp
  • 我们仅恢复表数据所涉及的表空间及文件

-- SYSTEM,SYSAUX,<undo tablespace> of ROOT (如果RAC下每个节点使用包括所有undo表空间)

-- SYSTEM,SYSAUX of SEED

-- SYSTEM,SYSAUX 和可插拔数据库下的 <包含表数据的表空间> 

恢复语法如下：

restore database root skip tablespace <除system和sysaux外的表空间> database "PDB$SEED" database <包含有相关表数据的PDB> skip tablespace <不包含数据的表空间>;

(这里例子中表数据在PDB1下USERS表空间中)

RMAN> run{
allocate channel t1 type disk;
allocate channel t2 type disk;
allocate channel t3 type disk;
allocate channel t4 type disk;
SET UNTIL TIME = "to_date('2016-11-23 14:56:30','YYYY/MM/DD HH24:MI:SS')";
set newname for database root to '/u03/database/oradata/ora12mt/%U';
set newname for database "PDB$SEED" to '/u03/database/oradata/ora12mt/%U';
set newname for datafile 8 to '/u03/database/oradata/ora12mt/%U';
set newname for datafile 9 to '/u03/database/oradata/ora12mt/%U';
set newname for datafile 10 to '/u03/database/oradata/ora12mt/%U';
restore database root skip tablespace users database "PDB$SEED" database PDB1 skip tablespace PDB1:T1;
switch datafile 1;
switch datafile 3;
switch datafile 4;
switch datafile 5;
switch datafile 7;
switch datafile 8;
switch datafile 9;
switch datafile 10;
}2> 3> 4> 5> 6> 7> 8> 9> 10> 11> 12> 13> 14> 15> 16> 17> 18> 19> 20> 21>

released channel: ORA_DISK_1
allocated channel: t1
channel t1: SID=242 device type=DISK

allocated channel: t2
channel t2: SID=355 device type=DISK

allocated channel: t3
channel t3: SID=8 device type=DISK

allocated channel: t4
channel t4: SID=125 device type=DISK

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

Starting restore at 15-DEC-16

channel t1: starting datafile backup set restore
channel t1: specifying datafile(s) to restore from backup set
channel t1: restoring datafile 00001 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSTEM_FNO-1
channel t1: restoring datafile 00003 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSAUX_FNO-3
channel t1: restoring datafile 00004 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-UNDOTBS1_FNO-4
channel t1: reading from backup piece /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp
channel t2: starting datafile backup set restore
channel t2: specifying datafile(s) to restore from backup set
channel t2: restoring datafile 00008 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSTEM_FNO-8
channel t2: restoring datafile 00009 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSAUX_FNO-9
channel t2: restoring datafile 00010 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-USERS_FNO-10
channel t2: reading from backup piece /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp
channel t3: starting datafile backup set restore
channel t3: specifying datafile(s) to restore from backup set
channel t3: restoring datafile 00005 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSTEM_FNO-5
channel t3: restoring datafile 00007 to /u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSAUX_FNO-7
channel t3: reading from backup piece /u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp
channel t3: piece handle=/u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br8c6d_.bkp tag=TAG20161123T145518
channel t3: restored backup piece 1
channel t3: restore complete, elapsed time: 00:01:45
channel t2: piece handle=/u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br6n46_.bkp tag=TAG20161123T145518
channel t2: restored backup piece 1
channel t2: restore complete, elapsed time: 00:01:56
channel t1: piece handle=/u03/backup/o1_mf_nnndf_TAG20161123T145518_d3br3yyn_.bkp tag=TAG20161123T145518
channel t1: restored backup piece 1
channel t1: restore complete, elapsed time: 00:02:36
Finished restore at 15-DEC-16

datafile 1 switched to datafile copy
input datafile copy RECID=53 STAMP=930653716 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSTEM_FNO-1

datafile 3 switched to datafile copy
input datafile copy RECID=54 STAMP=930653716 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSAUX_FNO-3

datafile 4 switched to datafile copy
input datafile copy RECID=55 STAMP=930653716 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-UNDOTBS1_FNO-4

datafile 5 switched to datafile copy
input datafile copy RECID=56 STAMP=930653716 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSTEM_FNO-5

datafile 7 switched to datafile copy
input datafile copy RECID=57 STAMP=930653716 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSAUX_FNO-7

datafile 8 switched to datafile copy
input datafile copy RECID=58 STAMP=930653716 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSTEM_FNO-8

datafile 9 switched to datafile copy
input datafile copy RECID=59 STAMP=930653716 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-SYSAUX_FNO-9

datafile 10 switched to datafile copy
input datafile copy RECID=60 STAMP=930653717 file name=/u03/database/oradata/ora12mt/data_D-ORA12MT_TS-USERS_FNO-10
released channel: t1
released channel: t2
released channel: t3
released channel: t4
  • 从备份中定位归档并恢复
RMAN> list backup of archivelog all;

List of Backup Sets
===================

BS Key Size Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
3 10.21M DISK 00:00:03 23-NOV-16
BP Key: 15 Status: AVAILABLE Compressed: YES Tag: TAG20161123T145514
Piece Name: /u03/backup/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp

List of Archived Logs in backup set 3
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- --------- ---------- ---------
1 54 2107527 11-OCT-16 7688704 23-NOV-16
1 55 7688704 23-NOV-16 7689057 23-NOV-16

BS Key Size Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
7 13.00K DISK 00:00:00 23-NOV-16
BP Key: 9 Status: AVAILABLE Compressed: YES Tag: TAG20161123T145824
Piece Name: /u03/backup/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp

List of Archived Logs in backup set 7
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- --------- ---------- ---------
1 56 7689057 23-NOV-16 7689108 23-NOV-16
1 57 7689108 23-NOV-16 7689190 23-NOV-16

RMAN> restore archivelog from logseq 54 until logseq 57;

Starting restore at 15-DEC-16
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=54
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=55
channel ORA_DISK_1: reading from backup piece /u03/backup/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp
channel ORA_DISK_1: piece handle=/u03/backup/o1_mf_annnn_TAG20161123T145514_d3br3v24_.bkp tag=TAG20161123T145514
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting archived log restore to default destination
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=56
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=57
channel ORA_DISK_1: reading from backup piece /u03/backup/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp
channel ORA_DISK_1: piece handle=/u03/backup/o1_mf_annnn_TAG20161123T145824_d3br9rpz_.bkp tag=TAG20161123T145824
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 15-DEC-16



Recovery Manager complete.
  • 现在将所有不需要进行恢复的数据文件offline掉
$ sqlplus "/as sysdba"

SQL*Plus: Release 12.1.0.2.0 Production on Thu Dec 15 11:37:16 2016

Copyright (c) 1982, 2014, Oracle. All rights reserved.

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> select 'container : '||c.name|| ' : alter database datafile '||d.file#||' offline drop;' from v$datafile d ,v$containers c
2 where d.con_id=c.con_id
3 and d.file# in (select file# from v$datafile_header where length(error)>=1)
4 order by c.con_id;

'CONTAINER:'||C.NAME||':ALTERDATABASEDATAFILE'||D.FILE#||'OFFLINEDROP;'
--------------------------------------------------------------------------------
container : CDB$ROOT : alter database datafile 6 offline drop;
container : CDB$ROOT : alter database datafile 11 offline drop;
container : PDB1 : alter database datafile 12 offline drop;

SQL> show con_name

CON_NAME
------------------------------
CDB$ROOT
SQL> alter database datafile 6 offline drop;

Database altered.

SQL> alter database datafile 11 offline drop;

Database altered.

SQL> alter session set container=PDB1;

Session altered.

SQL> alter database datafile 12 offline drop;

Database altered.

SQL>
  • 完成表时间点恢复
 SQL>recover automatic database UNTIL TIME '2016/11/23 14:56:30' USING BACKUP CONTROLFILE;

Media recovery complete.
  • 查看redo日志位置和命名，按需修改并以resetlogs打开数据库。
SQL> select member from v$logfile;

MEMBER
--------------------------------------------------------------------------------
/u04/database/oradata/ora12mt/redo04_1.dbf
/u04/database/oradata/ora12mt/redo05_1.dbf
/u04/database/oradata/ora12mt/redo06_1.dbf

SQL> alter database rename file '/u04/database/oradata/ora12mt/redo04_1.dbf' to '/u03/database/oradata/ora12mt/redo-01.dbf';

Database altered.

SQL> alter database rename file '/u04/database/oradata/ora12mt/redo05_1.dbf' to '/u03/database/oradata/ora12mt/redo-02.dbf';

Database altered.

SQL> alter database rename file '/u04/database/oradata/ora12mt/redo06_1.dbf' to '/u03/database/oradata/ora12mt/redo-03.dbf';

Database altered.

SQL> alter database open resetlogs;

Database altered.

SQL>
  • 好了，这样我们就能从辅助库中将表数据导出并导入回生产库了。

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