Oracle10g表空間不完整恢復

Automatic TSPITR in 10G RMAN -A walk Through [ID 335851.1]

 

Automatic TSPITR in 10G RMAN -A walk Through [ID 335851.1]
		修改时间 14-JUN-2009     类型 BULLETIN     状态 PUBLISHED

In this Document
  Purpose
  Scope and Application
  Automatic TSPITR in 10G RMAN -A walk Thruogh

---

Applies to:

Oracle Server - Enterprise Edition - Version: 10.1.0.0 to 10.2.0.0
Information in this document applies to any platform.

Purpose

This Article contains an example of Automated TSPITR in 10G using RMAN

Scope and Application

RMAN automatic Tablespace Point-In-Time Recovery ( TSPITR) enables you to quickly recover one or more tablespaces in an Oracle database to an earlier time, without affecting the state of the rest of the tablespaces and other objects in the database.

Automatic TSPITR in 10G RMAN -A walk Thruogh

 When performing fully automated TSPITR, letting RMAN manage the entire process. There are only two requirements which we need to specify manually.

1.  Auxiliary destination for RMAN to use for the auxiliary set datafiles and other files for the auxiliary instance.  

2. Configure any channels required for the TSPITR on the target instance.

Note: The auxiliary instance will use the same channel configuration as the target instance when performing the TSPITR.

3. Use TS_PITR_CHECK view for identifying and resolving dependencies within the recovery set tablespaces. Refer:
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14191/rcmtspit.htm#i1015064

 CASE STUDIES
~~~~~~~~~~~~
The following case studies give the audience detailed steps in building a test environment and in practicing the procedure.

Setting up the environment:

 1. Created a tablespace test  and a table in that tablespace
   
   

SQL> Create tablespace test datafile 'D:\BACKUP\TEST.DBF' size 2 M;
Tablespace created

SQL> create table test001 (id number) tablespace test;
Table created.

SQL> insert into test001 values(100);
1 row created.

SQL> commit;
Commit complete.

SQL> select * from test001;
ID
----------
100

 

2. Checked the CURRENT LOG Sequence

SQL> select SEQUENCE# from v$log where status='CURRENT';

SEQUENCE#
----------
135

 

## 135 is my current log sequence

3. Taken the backup of the database and current controlfile using RMAN.

4. Done few log switch and droped that table.
 

SQL> drop table test001; Table dropped.

SQL> select SEQUENCE# from v$log where status='CURRENT';

SEQUENCE#
----------
139

   ## Table dropped in log sequence 139.
   So TSPITR until log sequence 138 will give that table back.

Note: UNTIL TIME TSPITR syntax is :

RMAN> recover tablespace "TEST" until time "23-SEP-2005 10:00:00','DD-MON-YYYY HH24:MI:SS"
auxiliary destination 'D:\BAckup\temp';

 

True test starts:
-----------------

1. Connect to RMAN

   C:> rman target / catalog rman/rman

2. Need to Do A TSPITR until log sequence 138.

  Auxiliary destination  is D:\Backup\temp 

RMAN> recover tablespace "TEST" until logseq 138 thread 1
auxiliary destination 'D:\Backup\temp';

Starting recover at 20-SEP-05 starting full resync of recovery catalog full resync complete allocated channel: ORA_DISK_1 channel ORA_DISK_1: sid=26 devtype=DISK Creating automatic instance, with SID='ljsA' initialization parameters used for automatic instance: db_name=AMAR compatible=10.2.0.1.0 db_block_size=8192 db_files=200 db_unique_name=tspitr_AMAR_ljsA large_pool_size=1M shared_pool_size=110M #No auxiliary parameter file used db_create_file_dest=D:\BAckup\temp control_files=D:\BAckup\temp/cntrl_tspitr_AMAR_ljsA.f starting up automatic instance AMAR Oracle instance started Total System Global Area 201326592 bytes Fixed Size 1247044 bytes Variable Size 146802876 bytes Database Buffers 50331648 bytes Redo Buffers 2945024 bytes Automatic instance created contents of Memory Script. { # set the until clause set until logseq 138 thread 1; # restore the controlfile restore clone controlfile; # mount the controlfile sql clone 'alter database mount clone database'; # archive current online log for tspitr to a resent until time sql 'alter system archive log current'; # avoid unnecessary autobackups for structural changes during TSPITR sql 'begin dbms_backup_restore.AutoBackupFlag(FALSE); end;'; # resync catalog after controlfile restore resync catalog; } executing Memory Script. executing command: SET until clause Starting restore at 20-SEP-05 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: sid=36 devtype=DISK channel ORA_AUX_DISK_1: starting datafile backupset restore channel ORA_AUX_DISK_1: restoring control file channel ORA_AUX_DISK_1: reading from backup piece +DATA/amar/backupset/2005_09_20/ncnnf0_tag20050920t105610_0.291.569501773 channel ORA_AUX_DISK_1: restored backup piece 1 piece handle=+DATA/amar/backupset/2005_09_20/ncnnf0_tag20050920t105610_0.291.569501773 tag=TAG20050920T105610 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:15 output filename=D:\BACKUP\TEMP\CNTRL_TSPITR_AMAR_LJSA.F Finished restore at 20-SEP-05 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 released channel: ORA_DISK_1 released channel: ORA_AUX_DISK_1 contents of Memory Script. { # generated tablespace point-in-time recovery script. # set the until clause set until logseq 138 thread 1; plsql <<>>; # set an omf destination filename for restore set newname for clone datafile 1 to new; # set an omf destination filename for restore set newname for clone datafile 2 to new; # set an omf destination tempfile set newname for clone tempfile 1 to new; # set a destination filename for restore set newname for datafile 6 to "D:\BACKUP\TEST.DBF"; # rename all tempfiles switch clone tempfile all; # restore the tablespaces in the recovery set plus the auxilliary tablespaces restore clone datafile 1, 2, 6; switch clone datafile all; #online the datafiles restored or flipped sql clone "alter database datafile 1 online"; #online the datafiles restored or flipped sql clone "alter database datafile 2 online"; #online the datafiles restored or flipped sql clone "alter database datafile 6 online";
# make the controlfile point at the restored datafiles, then recover them
recover clone database tablespace "TEST", "SYSTEM", "UNDOTBS1" delete archivelog;
alter clone database open resetlogs;
# PLUG HERE the creation of a temporary tablespace if export fails due to lack
# of temporary space.
# For example in Unix these two lines would do that:
#sql clone "create tablespace aux_tspitr_tmp
# datafile ''/tmp/aux_tspitr_tmp.dbf'' size 500K";
}
executing Memory Script

executing command: SET until clause

sql statement: alter tablespace TEST offline for recover

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

renamed temporary file 1 to D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_TEMP_%U_.TMP in control file

Starting restore at 20-SEP-05
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: sid=39 devtype=DISK

channel ORA_AUX_DISK_1: starting datafile backupset restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00001 to D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_SYSTEM_%U_.DBF
restoring datafile 00002 to D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_UNDOTBS1_%U_.DBF
restoring datafile 00006 to D:\BACKUP\TEST.DBF
channel ORA_AUX_DISK_1: reading from backup piece
+DATA/amar/backupset/2005_09_20/nnndf0_tag20050920t105434_0.295.569501677
channel ORA_AUX_DISK_1: restored backup piece 1
piece handle=+DATA/amar/backupset/2005_09_20/nnndf0_tag20050920t105434_0.295.569501677
tag=TAG20050920T105434
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:06
Finished restore at 20-SEP-05

datafile 1 switched to datafile copy
input datafile copy recid=4 stamp=569503256
filename=D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_SYSTEM_1LZ8QZF1_.DBF
datafile 2 switched to datafile copy
input datafile copy recid=5 stamp=569503256
filename=D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_UNDOTBS1_1LZ8QZN7_.DBF

sql statement: alter database datafile 1 online

sql statement: alter database datafile 2 online

sql statement: alter database datafile 6 online

Starting recover at 20-SEP-05
using channel ORA_AUX_DISK_1

starting media recovery

archive log thread 1 sequence 134 is already on disk as file
+DATA/amar/archivelog/2005_09_20/thread_1_seq_134.292.569501807
archive log thread 1 sequence 135 is already on disk as file
+DATA/amar/archivelog/2005_09_20/thread_1_seq_135.280.569501919
archive log thread 1 sequence 136 is already on disk as file
+DATA/amar/archivelog/2005_09_20/thread_1_seq_136.283.569501925
archive log thread 1 sequence 137 is already on disk as file
+DATA/amar/archivelog/2005_09_20/thread_1_seq_137.297.569501931
archive log filename=+DATA/amar/archivelog/2005_09_20/thread_1_seq_134.292.569501807 thread=1
sequence=134
archive log filename=+DATA/amar/archivelog/2005_09_20/thread_1_seq_135.280.569501919 thread=1
sequence=135
archive log filename=+DATA/amar/archivelog/2005_09_20/thread_1_seq_136.283.569501925 thread=1
sequence=136
archive log filename=+DATA/amar/archivelog/2005_09_20/thread_1_seq_137.297.569501931 thread=1
sequence=137
media recovery complete, elapsed time: 00:00:06
Finished recover at 20-SEP-05

database opened

contents of Memory Script.:
{
# export the tablespaces in the recovery set
host 'exp userid
=\"/@(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=oracle)(ARGV0=oracleljsA)(ARGS=^'(DESCRIPTION=(LO
AL=YES)(ADDRESS=(PROTOCOL=beq)))^')(ENVS=^'ORACLE_SID=ljsA^'))(CONNECT_DATA=(SID=ljsA))) as
sysdba\" point_in_time_recover=y tablespaces=
TEST file=
tspitr_a.dmp';
# shutdown clone before import
shutdown clone immediate
# import the tablespaces in the recovery set
host 'imp userid =\"/@ as sysdba\" point_in_time_recover=y file=
tspitr_a.dmp';
# online/offline the tablespace imported
sql "alter tablespace TEST online";
sql "alter tablespace TEST offline";
# enable autobackups in case user does open resetlogs from RMAN after TSPITR
sql 'begin dbms_backup_restore.AutoBackupFlag(TRUE); end;';
# resync catalog after tspitr finished
resync catalog;
}
executing Memory Script

Export: Release 10.2.0.1.0 - Production on Tue Sep 20 11:21:40 2005

Copyright (c) 1982, 2005, Oracle. All rights reserved.


Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Produc
tion
With the Partitioning, OLAP and Data Mining options
Export done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set
server uses AL32UTF8 character set (possible charset conversion)
Note: table data (rows) will not be exported

About to export Tablespace Point-in-time Recovery objects...
For tablespace TEST ...
. exporting cluster definitions
. exporting table definitions
. . exporting table TEST001
. exporting referential integrity constraints
. exporting triggers
. end point-in-time recovery
Export terminated successfully without warnings.

host command complete

database closed
database dismounted
Oracle instance shut down

Import: Release 10.2.0.1.0 - Production on Tue Sep 20 11:22:17 2005

Copyright (c) 1982, 2005, Oracle. All rights reserved.


Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Produc
tion
With the Partitioning, OLAP and Data Mining options

Export file created by EXPORT:V10.02.01 via conventional path
About to import Tablespace Point-in-time Recovery objects...
import done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set
import server uses AL32UTF8 character set (possible charset conversion)
. importing SYS's objects into SYS
. . importing table "TEST001"
Import terminated successfully without warnings.

host command complete

sql statement: alter tablespace TEST online

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 D:\BACKUP\TEMP\CNTRL_TSPITR_AMAR_LJSA.F deleted
auxiliary instance file D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_SYSTEM_1LZ8QZF1_.DBF deleted
auxiliary instance file D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_UNDOTBS1_1LZ8QZN7_.DBF deleted
auxiliary instance file D:\BACKUP\TEMP\TSPITR_A\DATAFILE\O1_MF_TEMP_1LZ8TSLB_.TMP deleted
auxiliary instance file D:\BACKUP\TEMP\TSPITR_A\ONLINELOG\O1_MF_1_1LZ8TM4X_.LOG deleted
auxiliary instance file D:\BACKUP\TEMP\TSPITR_A\ONLINELOG\O1_MF_2_1LZ8TMSL_.LOG deleted
auxiliary instance file D:\BACKUP\TEMP\TSPITR_A\ONLINELOG\O1_MF_3_1LZ8TNCV_.LOG deleted
Finished recover at 20-SEP-05

TSPITR recovery completed sucessfully.

3. Connect to target database using SQLPLUS and take the tablespace test Online.

SQL> select * from test001;
ID
----------
100

Recoverd the lost table using TSPITR.

---

相关的 产品 Oracle Database Products > Oracle Database > Oracle Database > Oracle Server - Enterprise Edition 关键字 TSPITR

来自 “ ITPUB博客 ” ，链接：http://blog.itpub.net/7608831/viewspace-681653/，如需转载，请注明出处，否则将追究法律责任。

转载于:http://blog.itpub.net/7608831/viewspace-681653/