TSPITR – Tablespace Point in Time Recovery – 11gR2

Este é um dos Labs executados pelos alunos da Nerv no Treinamento Oracle Backup & Recovery.

No Oracle, é possível voltar apenas uma Tablespace em um determinado ponto no tempo.

No 11gR2 esta operação está totalmente automatizada. Este fantástico recurso é, na verdade, uma complexa utilização de outros recursos do Oracle. Por baixo dos panos, o TSPITR cria uma nova Instance (no diretório indicado no comando de RECOVER), recupera nelas apenas a SYSTEM, SYSAUX, mais a Tablespace de UNDO e só então, a Tablespace desejada, a partir de um Backup já existente. Em seguida, esta Tablespace da nova Instance tem seus metadados exportados, e então importados na Instance original. Ou seja, dava para fazer tudo manualmente, mas daria muito mais trabalho.

Repare que ao término da operação, a Tablespace é deixada em OFFLINE. Talvez isso seja intencional, pois provavelmente o DBA irá conferir os dados antes de liberar para a utilização pelos clientes.

[oracle@OBR ~]$ sqlplus SCOTT/TIGER
SQL*Plus: Release 11.2.0.2.0 Production on Sun Jan 16 16:31:23 2011
Copyright (c) 1982, 2010, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining,
Oracle Database Vault and Real Application Testing options
SQL> DROP TABLE T;
Table dropped.
SQL> EXIT
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining,
Oracle Database Vault and Real Application Testing options
[oracle@OBR ~]$ mkdir /home/oracle/auxiliary
[oracle@OBR ~]$ rman CATALOG=USER_CATALOGO/USER_CATALOGO@CATALOGO TARGET /
Recovery Manager: Release 11.2.0.2.0 - Production on Sun Jan 16 16:32:14 2011
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
connected to target database: ORCL (DBID=1267239156)
connected to recovery catalog database
RMAN> RECOVER TABLESPACE USUARIOS UNTIL SEQUENCE 83 AUXILIARY DESTINATION '/home/oracle/auxiliary/';
Starting recover at 16-JAN-11
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=37 device type=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: SID=1 device type=DISK
Creating automatic instance, with SID='lssm'
initialization parameters used for automatic instance:
db_name=ORCL
db_unique_name=lssm_tspitr_ORCL
compatible=11.2.0.0.0
db_block_size=8192
db_files=200
sga_target=280M
processes=50
db_create_file_dest=/home/oracle/auxiliary/
log_archive_dest_1='location=/home/oracle/auxiliary/'
#No auxiliary parameter file used
starting up automatic instance ORCL
Oracle instance started
Total System Global Area     292933632 bytes
Fixed Size                     1343748 bytes
Variable Size                100667132 bytes
Database Buffers             184549376 bytes
Redo Buffers                   6373376 bytes
Automatic instance created
Running TRANSPORT_SET_CHECK on recovery set tablespaces
TRANSPORT_SET_CHECK completed successfully
contents of Memory Script:
{
# set requested point in time
set until  logseq 83 thread 1;
# 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 16-JAN-11
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=21 device type=DISK
allocated channel: ORA_AUX_DISK_2
channel ORA_AUX_DISK_2: 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 /home/oracle/c-1267239156-20110116-01
channel ORA_AUX_DISK_1: piece handle=/home/oracle/c-1267239156-20110116-01 tag=TAG20110116T112118
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:03
output file name=/home/oracle/auxiliary/ORCL/controlfile/o1_mf_6m6gkby9_.ctl
Finished restore at 16-JAN-11
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  logseq 83 thread 1;
plsql <<<-- tspitr_2 declare   sqlstatement       varchar2(512);   offline_not_needed exception;   pragma exception_init(offline_not_needed, -01539); begin   sqlstatement := 'alter tablespace '||  'USUARIOS' ||' offline immediate';   krmicd.writeMsg(6162, sqlstatement);   krmicd.execSql(sqlstatement); exception   when offline_not_needed then     null; end; >>>;
# 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  10 to
"/u01/app/oracle/oradata/ORCL/usuarios01.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, 10;
switch clone datafile all;
}
executing Memory Script
executing command: SET until clause
sql statement: alter tablespace USUARIOS offline immediate
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
renamed tempfile 1 to /home/oracle/auxiliary/ORCL/datafile/o1_mf_temp_%u_.tmp in control file
Starting restore at 16-JAN-11
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 00001 to /home/oracle/auxiliary/ORCL/datafile/o1_mf_system_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00003 to /home/oracle/auxiliary/ORCL/datafile/o1_mf_undotbs1_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00010 to /u01/app/oracle/oradata/ORCL/usuarios01.dbf
channel ORA_AUX_DISK_1: reading from backup piece /home/oracle/ORCL_20110116_182_1.bkp
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 00002 to /home/oracle/auxiliary/ORCL/datafile/o1_mf_sysaux_%u_.dbf
channel ORA_AUX_DISK_2: reading from backup piece /home/oracle/ORCL_20110116_181_1.bkp
channel ORA_AUX_DISK_2: piece handle=/home/oracle/ORCL_20110116_181_1.bkp tag=TAG20110116T105556
channel ORA_AUX_DISK_2: restored backup piece 1
channel ORA_AUX_DISK_2: restore complete, elapsed time: 00:03:41
channel ORA_AUX_DISK_1: piece handle=/home/oracle/ORCL_20110116_182_1.bkp tag=TAG20110116T105556
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:03:51
Finished restore at 16-JAN-11
datafile 1 switched to datafile copy
input datafile copy RECID=27 STAMP=740594308 file name=/home/oracle/auxiliary/ORCL/datafile/o1_mf_system_6m6gkyj2_.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=28 STAMP=740594308 file name=/home/oracle/auxiliary/ORCL/datafile/o1_mf_undotbs1_6m6gkz5j_.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=29 STAMP=740594308 file name=/home/oracle/auxiliary/ORCL/datafile/o1_mf_sysaux_6m6gky8n_.dbf
contents of Memory Script:
{
# set requested point in time
set until  logseq 83 thread 1;
# 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  10 online";
# recover and open resetlogs
recover clone database tablespace  "USUARIOS", "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  10 online
Starting recover at 16-JAN-11
using channel ORA_AUX_DISK_1
using channel ORA_AUX_DISK_2
starting media recovery
archived log for thread 1 with sequence 80 is already on disk as file /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2011_01_16/o1_mf_1_80_6m5wdfmw_.arc
archived log for thread 1 with sequence 81 is already on disk as file /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2011_01_16/o1_mf_1_81_6m5wfgpb_.arc
archived log for thread 1 with sequence 82 is already on disk as file /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2011_01_16/o1_mf_1_82_6m5wfoqc_.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=79
channel ORA_AUX_DISK_1: reading from backup piece /home/oracle/ORCL_20110116_185_1.bkp
channel ORA_AUX_DISK_1: piece handle=/home/oracle/ORCL_20110116_185_1.bkp tag=TAG20110116T112106
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:03
archived log file name=/home/oracle/auxiliary/1_79_739458432.dbf thread=1 sequence=79
channel clone_default: deleting archived log(s)
archived log file name=/home/oracle/auxiliary/1_79_739458432.dbf RECID=102 STAMP=740594316
archived log file name=/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2011_01_16/o1_mf_1_80_6m5wdfmw_.arc thread=1 sequence=80
archived log file name=/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2011_01_16/o1_mf_1_81_6m5wfgpb_.arc thread=1 sequence=81
archived log file name=/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2011_01_16/o1_mf_1_82_6m5wfoqc_.arc thread=1 sequence=82
media recovery complete, elapsed time: 00:00:01
Finished recover at 16-JAN-11
database opened
contents of Memory Script:
{
# make read only the tablespace that will be exported
sql clone 'alter tablespace  USUARIOS read only';
# create directory for datapump import
sql "create or replace directory TSPITR_DIROBJ_DPDIR as ''
/home/oracle/auxiliary/''";
# create directory for datapump export
sql clone "create or replace directory TSPITR_DIROBJ_DPDIR as ''
/home/oracle/auxiliary/''";
}
executing Memory Script
sql statement: alter tablespace  USUARIOS read only
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/home/oracle/auxiliary/''
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/home/oracle/auxiliary/''
Performing export of metadata...
EXPDP> Starting "SYS"."TSPITR_EXP_lssm":
EXPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
EXPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
EXPDP> Master table "SYS"."TSPITR_EXP_lssm" successfully loaded/unloaded
EXPDP> ******************************************************************************
EXPDP> Dump file set for SYS.TSPITR_EXP_lssm is:
EXPDP>   /home/oracle/auxiliary/tspitr_lssm_42593.dmp
EXPDP> ******************************************************************************
EXPDP> Datafiles required for transportable tablespace USUARIOS:
EXPDP>   /u01/app/oracle/oradata/ORCL/usuarios01.dbf
EXPDP> Job "SYS"."TSPITR_EXP_lssm" successfully completed at 16:44:14
Export completed
contents of Memory Script:
{
# shutdown clone before import
shutdown clone immediate
# drop target tablespaces before importing them back
sql 'drop tablespace  USUARIOS including contents keep datafiles';
}
executing Memory Script
database closed
database dismounted
Oracle instance shut down
sql statement: drop tablespace  USUARIOS including contents keep datafiles
Performing import of metadata...
IMPDP> Master table "SYS"."TSPITR_IMP_lssm" successfully loaded/unloaded
IMPDP> Starting "SYS"."TSPITR_IMP_lssm":
IMPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
IMPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
IMPDP> Job "SYS"."TSPITR_IMP_lssm" successfully completed at 16:45:31
Import completed
contents of Memory Script:
{
# make read write and offline the imported tablespaces
sql 'alter tablespace  USUARIOS read write';
sql 'alter tablespace  USUARIOS 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  USUARIOS read write
sql statement: alter tablespace  USUARIOS 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 /home/oracle/auxiliary/ORCL/datafile/o1_mf_temp_6m6gsrvx_.tmp deleted
auxiliary instance file /home/oracle/auxiliary/ORCL/onlinelog/o1_mf_3_6m6gsmq5_.log deleted
auxiliary instance file /home/oracle/auxiliary/ORCL/onlinelog/o1_mf_2_6m6gskmr_.log deleted
auxiliary instance file /home/oracle/auxiliary/ORCL/onlinelog/o1_mf_1_6m6gshdw_.log deleted
auxiliary instance file /home/oracle/auxiliary/ORCL/datafile/o1_mf_sysaux_6m6gky8n_.dbf deleted
auxiliary instance file /home/oracle/auxiliary/ORCL/datafile/o1_mf_undotbs1_6m6gkz5j_.dbf deleted
auxiliary instance file /home/oracle/auxiliary/ORCL/datafile/o1_mf_system_6m6gkyj2_.dbf deleted
auxiliary instance file /home/oracle/auxiliary/ORCL/controlfile/o1_mf_6m6gkby9_.ctl deleted
Finished recover at 16-JAN-11
RMAN> EXIT
Recovery Manager complete.
[oracle@OBR ~]$ sqlplus SCOTT/TIGER
SQL*Plus: Release 11.2.0.2.0 Production on Sun Jan 16 16:46:26 2011
Copyright (c) 1982, 2010, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining,
Oracle Database Vault and Real Application Testing options
SQL> DESC T;
Name                                      Null?    Type
----------------------------------------- -------- ----------------------------
OBJECT_NAME                                        VARCHAR2(128)
SUBOBJECT_NAME                                     VARCHAR2(30)
OBJECT_ID                                          NUMBER
DATA_OBJECT_ID                                     NUMBER
OBJECT_TYPE                                        VARCHAR2(19)
CREATED                                            DATE
LAST_DDL_TIME                                      DATE
TIMESTAMP                                          VARCHAR2(19)
STATUS                                             VARCHAR2(7)
TEMPORARY                                          VARCHAR2(1)
GENERATED                                          VARCHAR2(1)
SECONDARY                                          VARCHAR2(1)
NAMESPACE                                          NUMBER
EDITION_NAME                                       VARCHAR2(30)
SQL> SELECT COUNT(*) FROM T;
SELECT COUNT(*) FROM T
*
ERROR at line 1:
ORA-00376: file 10 cannot be read at this time
ORA-01110: data file 10: '/u01/app/oracle/oradata/ORCL/usuarios01.dbf'
SQL> CONN / AS SYSDBA
Connected.
SQL> ALTER TABLESPACE USUARIOS ONLINE;
Tablespace altered.
SQL> CONN SCOTT/TIGER
Connected.
SQL> SELECT COUNT(*) FROM T;
COUNT(*)
----------
7
SQL>

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