How to recover a skipped tablespace after an incomplete recovery? (Doc ID 1561645.1)

How to recover a skipped tablespace after an incomplete recovery? (Doc ID 1561645.1)

APPLIES TO:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

GOAL

How to recover a skipped tablespace after an incomplete recovery.
不完全恢复后如何恢复跳过的表空间
Skipped datafile is reported offline after resetlogs is done from Incomplete recovery.
从不完全恢复中完成 resetlogs 后，跳过的数据文件将报告为 offline 状态

SQL> select * from V$recover_file;

FILE# ONLINE ONLINE_ ERROR CHANGE# TIME
---------- ------- ------- ----------------------------------------------------------------- ---------- --------------------
6 OFFLINE OFFLINE UNKNOWN ERROR 2386984 13-JUN-2013 22:52:39

This Document holds good if you have a Valid backup of the skipped tablespace.
如果您具有已跳过表空间的有效备份，则本文档非常有用

SOLUTION

NOTE: In the images and/or the document content below, the user information and environment data used represents fictitious data from the Oracle sample schema(s), Public Documentation delivered with an Oracle database product or other training material. Any similarity to actual environments, actual persons, living or dead, is purely coincidental and not intended in any manner.

For the purposes of this document, the following fictitious environment is used as an example to describe the procedure:
Database Name: PRODDB
Tablespace Name:  PRODDATA
Directory Location:  u01/app/oradb1

********

It is possible to restore and recover a skipped tablespace even when the database has been opened with resetlogs.

即使使用 resetlogs 打开了数据库，也可以 restore and recover 跳过的表空间。

As a best practice we always recommend testing the backups, restore and recovery scenario in your environment.

作为最佳实践，我们始终建议您在您的环境中测试备份，还原和恢复方案

In this note we will be skipping the tablespace PRODDATA

在本说明中，我们将跳过表空间PRODDATA

Database Structure and Backup  数据库结构与备份

Assume that we have the following tablespaces and a full backup is taken:

假设我们具有以下表空间，并已进行了完整备份

SQL> select tablespace_name, file_name, status from dba_data_files order by 1;

TABLESPACE_NAME      FILE_NAME                                                              STATUS
-------------------- ---------------------------------------------------------------------- ---------
EXAMPLE              /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_example_8vg997t4_.dbf    AVAILABLE
PRODDATA             /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_proddata_8vg9jlk1_.dbf   AVAILABLE
SYSAUX               /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_sysaux_8vg997qs_.dbf     AVAILABLE
SYSTEM               /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_system_8vg997sd_.dbf     AVAILABLE
UNDOTBS1             /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_undotbs1_8vg997wc_.dbf   AVAILABLE
USERS                /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_users_8vg997xp_.dbf      AVAILABLE
USERS                /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_users_8vg997vg_.dbf      AVAILABLE

7 rows selected.

$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Thu Jun 13 22:43:27 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
connected to target database: PRODDB (DBID=552982679)

RMAN> backup database plus archivelog;
...

piece handle=/u01/app/oradb1/fast_recovery_area/PRODDB/backupset/2013_06_13/o1_mf_nnndf_TAG20130613T224932_8vmhywt8_.bkp tag=TAG20130613T224932 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:01:05
Finished backup at 13-JUN-13

Starting Control File and SPFILE Autobackup at 13-JUN-13
piece handle=/u01/app/oradb1/fast_recovery_area/PRODDB/autobackup/2013_06_13/o1_mf_s_818031037_8vmj0y3g_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 13-JUN-13

Incomplete Recovery with a skipped tablespace.  具有跳过的表空间的不完全恢复

Skip a tablespace during restore/recovery get the rest of the database online for use.

在 restore/recovery 期间跳过表空间，以使数据库的其余部分联机使用

$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Thu Jun 13 22:54:08 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
connected to target database: PRODDB (DBID=552982679, not open)

RMAN> run {
set until sequence 10;
restore database skip tablespace proddata;
recover database skip tablespace proddata;
}

executing command: SET until clause

Starting restore at 13-JUN-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=20 device type=DISK

channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_system_8vg997sd_.dbf
channel ORA_DISK_1: restoring datafile 00002 to /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_sysaux_8vg997qs_.dbf
channel ORA_DISK_1: restoring datafile 00003 to /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_undotbs1_8vg997wc_.dbf
channel ORA_DISK_1: restoring datafile 00004 to /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_users_8vg997xp_.dbf
channel ORA_DISK_1: restoring datafile 00005 to /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_example_8vg997t4_.dbf
channel ORA_DISK_1: restoring datafile 00007 to /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_users_8vg997vg_.dbf
channel ORA_DISK_1: reading from backup piece /u01/app/oradb1/fast_recovery_area/PRODDB/backupset/2013_06_13/o1_mf_nnndf_TAG20130613T222311_8vmgfhjm_.bkp
channel ORA_DISK_1: piece handle=/u01/app/oradb1/fast_recovery_area/PRODDB/backupset/2013_06_13/o1_mf_nnndf_TAG20130613T222311_8vmgfhjm_.bkp tag=TAG20130613T222311
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:57
Finished restore at 13-JUN-13

Starting recover at 13-JUN-13
using channel ORA_DISK_1

Executing: alter database datafile 6 offline        --->>>  (This is the datafile for PRODDATA)
starting media recovery

archived log for thread 1 with sequence 8 is already on disk as file /u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_8_8vmghjn4_.arc
archived log for thread 1 with sequence 9 is already on disk as file /u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_9_8vmhrdnv_.arc
archived log file name=/u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_8_8vmghjn4_.arc thread=1 sequence=8
archived log file name=/u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_9_8vmhrdnv_.arc thread=1 sequence=9
media recovery complete, elapsed time: 00:00:00
Finished recover at 13-JUN-13

SQL> alter database open resetlogs;

Database altered.

SQL> select file#, status from V$datafile;

     FILE# STATUS
---------- -------
         1 SYSTEM
         2 ONLINE
         3 ONLINE
         4 ONLINE
         5 ONLINE
         6 OFFLINE
         7 ONLINE

7 rows selected.

SQL> select * from V$recover_file;

     FILE# ONLINE  ONLINE_ ERROR                                                                CHANGE# TIME
---------- ------- ------- ----------------------------------------------------------------- ---------- --------------------
         6 OFFLINE OFFLINE UNKNOWN ERROR                                                        2386984 13-JUN-2013 22:52:39

The skipped tablespace 'datafile' is offline and all the other 'datafiles' are online. 跳过的表空间 'datafile' 处于 offline 状态，而所有其他 'datafiles' 均处于online 状态

# V$tablespace shows the Tablespace 'PRODDATA' is still defined in dictionary and available

V$tablespace 显示表空间 'PRODDATA' 仍在字典中定义并且可用

SQL> select * from v$tablespace ;  

Performing recovery of the skipped tablespace.执行已跳过表空间的恢复

As the database incarnation increments after resetlogs, to pick up the new/current database incarnation you will need to re-initiate the rman session as below:

随着 resetlogs 后数据库 incarnation 的增加，要获取 new/current 的数据库 incarnation，您将需要重新启动rman会话，如下所示

$ rman target /

Recovery Manager: Release 11.2.0.3.0 - Production on Thu Jun 13 23:03:24 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
connected to target database: PRODDB (DBID=552982679)

RMAN> run {
restore tablespace proddata;
recover tablespace proddata;
}

RMAN>
Starting restore at 13-JUN-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=17 device type=DISK

channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00006 to /u01/app/oradb1/oradata/PRODDB/datafile/o1_mf_proddata_8vg9jlk1_.dbf
channel ORA_DISK_1: reading from backup piece /u01/app/oradb1/fast_recovery_area/PRODDB/backupset/2013_06_13/o1_mf_nnndf_TAG20130613T222311_8vmgfhjm_.bkp
channel ORA_DISK_1: piece handle=/u01/app/oradb1/fast_recovery_area/PRODDB/backupset/2013_06_13/o1_mf_nnndf_TAG20130613T222311_8vmgfhjm_.bkp tag=TAG20130613T222311
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 13-JUN-13

RMAN>
Starting recover at 13-JUN-13
using channel ORA_DISK_1

starting media recovery

archived log for thread 1 with sequence 8 is already on disk as file /u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_8_8vmghjn4_.arc
archived log for thread 1 with sequence 9 is already on disk as file /u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_9_8vmhrdnv_.arc
archived log for thread 1 with sequence 1 is already on disk as file /u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_1_8vmjofl8_.arc
archived log for thread 1 with sequence 2 is already on disk as file /u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_2_8vmjoh19_.arc
archived log file name=/u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_8_8vmghjn4_.arc thread=1 sequence=8
archived log file name=/u01/app/oradb1/fast_recovery_area/PRODDB/archivelog/2013_06_13/o1_mf_1_9_8vmhrdnv_.arc thread=1 sequence=9
media recovery complete, elapsed time: 00:00:00
Finished recover at 13-JUN-13

SQL>  select * from V$recover_file;

no rows selected

SQL>  select file#, status from V$datafile;

     FILE# STATUS
---------- -------
         1 SYSTEM
         2 ONLINE
         3 ONLINE
         4 ONLINE
         5 ONLINE
         6 OFFLINE
         7 ONLINE

7 rows selected.


SQL> alter tablespace proddata online;

Tablespace altered.

SQL> select file#, status from V$datafile;

     FILE# STATUS
---------- -------
         1 SYSTEM
         2 ONLINE
         3 ONLINE
         4 ONLINE
         5 ONLINE
         6 ONLINE
         7 ONLINE

7 rows selected.

Incomplete recovery of all datafiles of the skipped tablespace is performed till the earlier specified "set until" and tablespace can be brought online for use.

对跳过的表空间的所有数据文件执行不完全恢复，直到先前指定的 "set until" 和表空间可以联机使用