Rman Restore database khi mất Controlfiles Oracle Database 19c

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Bài viết này sẽ hướng dẫn bạn cách khôi phục lại CSDL khi bị mất Controlfiles.

Các công việc thực hiện:

  • Kiểm tra Controlfiles hiện tại
  • Xoá controlfiles trong OS level
  • Thêm mới tablespace (sẽ bị lỗi do không có controlfile vì nó lưu đường dẫn của datafile)
  • Shutdown instance và starup nomount
  • Restore controlfile
  • Mount và recover database, open resetlogs

oracle rman plugin Archives - SysDBASoft IT

Kiểm tra controlfiles hiện tại:

select name from v$controlfile;

NAME

——————————————————————————–

/u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl

/u01/app/oracle/fast_recovery_area/DUODB/controlfile/o1_mf_m3bvy4p9_.ctl

Tạo bản backup:

exit

rman target /

show all;

=> đảm bảo rằng Controlfiles autobackup đang ON

backup database plus archivelog;

RMAN> show all;

using target database control file instead of recovery catalog

RMAN configuration parameters for database with db_unique_name DUODB are:

CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default

CONFIGURE BACKUP OPTIMIZATION OFF; # default

CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default

CONFIGURE CONTROLFILE AUTOBACKUP ON; # default

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO ‘%F’; # default

CONFIGURE DEVICE TYPE DISK PARALLELISM 10 BACKUP TYPE TO BACKUPSET;

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE MAXSETSIZE TO UNLIMITED; # default

CONFIGURE ENCRYPTION FOR DATABASE OFF; # default

CONFIGURE ENCRYPTION ALGORITHM ‘AES128’; # default

CONFIGURE COMPRESSION ALGORITHM ‘BASIC’ AS OF RELEASE ‘DEFAULT’ OPTIMIZE FOR LOAD TRUE ; # default

CONFIGURE RMAN OUTPUT TO KEEP FOR 7 DAYS; # default

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

CONFIGURE SNAPSHOT CONTROLFILE NAME TO ‘/u01/app/oracle/product/19.3.0/dbhome_1/dbs/snapcf_duodb.f’; # default

using channel ORA_DISK_1

using channel ORA_DISK_2

using channel ORA_DISK_3

using channel ORA_DISK_4

using channel ORA_DISK_5

using channel ORA_DISK_6

using channel ORA_DISK_7

using channel ORA_DISK_8

using channel ORA_DISK_9

using channel ORA_DISK_10

channel ORA_DISK_1: starting archived log backup set

channel ORA_DISK_1: specifying archived log(s) in backup set

input archived log thread=1 sequence=6 RECID=39 STAMP=1168645424

channel ORA_DISK_1: starting piece 1 at 10-MAY-24

channel ORA_DISK_1: finished piece 1 at 10-MAY-24

piece handle=/u01/app/oracle/fast_recovery_area/DUODB/backupset/2024_05_10/o1_mf_annnn_TAG20240510T234344_m3wmp0pq_.bkp tag=TAG20240510T234344 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 10-MAY-24

Starting Control File and SPFILE Autobackup at 10-MAY-24

piece handle=/u01/app/oracle/fast_recovery_area/DUODB/autobackup/2024_05_10/o1_mf_s_1168645425_m3wmp20h_.bkp comment=NONE

Finished Control File and SPFILE Autobackup at 10-MAY-24

Xoá controlfile trong OS:

rm /u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl

rm /u01/app/oracle/fast_recovery_area/DUODB/controlfile/o1_mf_m3bvy4p9_.ctl

Tạo mới TBS: => hệ thống sẽ báo lỗi không tạo được tbs do không có controlfile để ghi đường dẫn datafile của TBS mới.

sqlplus / as sysdba

create tablespace datalink_tbs datafile '/u01/app/oracle/oradata/DUODB/datafile/datalink_tbs01.dbf' size 100M;

SQL> create tablespace datalink_tbs datafile ‘/u01/app/oracle/oradata/DUODB/datafile/datalink_tbs01.dbf’ size 100M;

create tablespace datalink_tbs datafile ‘/u01/app/oracle/oradata/DUODB/datafile/datalink_tbs01.dbf’ size 100M

*

ERROR at line 1:

ORA-00210: cannot open the specified control file

ORA-00202: control file:

‘/u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl’

ORA-27041: unable to open file

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

Shut instance và startup nomount: (có thể phải shutdown abort do không còn controlfile nên không thể shutdown immediate được nữa)

shut immediate;

shut abort;

startup nomount ;

SQL> shut immediate;

ORA-00210: cannot open the specified control file

ORA-00202: control file: ‘/u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl’

ORA-27041: unable to open file

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

SQL> shut abort;

ORACLE instance shut down.

SQL> startup nomount ;

ORACLE instance started.

Total System Global Area 1828713632 bytes

Fixed Size 8897696 bytes

Variable Size 436207616 bytes

Database Buffers 1375731712 bytes

Redo Buffers 7876608 bytes

Tiến hành restore controlfile: dbid= 381617332 là số khi login vào Rman nó hiển thị trên màn hình

rman target /

set dbid=381617332

restore controlfile from autobackup;

alter database mount;

recover database;

alter database open resetlogs;

[oracle@srv1 datafile]$ rman target /

Recovery Manager: Release 19.0.0.0.0 – Production on Fri May 10 23:46:55 2024

Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.

connected to target database: DUODB (not mounted)

RMAN> set dbid=381617332

executing command: SET DBID

RMAN> restore controlfile from autobackup;

Starting restore at 10-MAY-24

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=21 device type=DISK

recovery area destination: /u01/app/oracle/fast_recovery_area

database name (or database unique name) used for search: DUODB

channel ORA_DISK_1: AUTOBACKUP /u01/app/oracle/fast_recovery_area/DUODB/autobackup/2024_05_10/o1_mf_s_1168645425_m3wmp20h_.bkp found in the recovery area

channel ORA_DISK_1: looking for AUTOBACKUP on day: 20240510

channel ORA_DISK_1: restoring control file from AUTOBACKUP /u01/app/oracle/fast_recovery_area/DUODB/autobackup/2024_05_10/o1_mf_s_1168645425_m3wmp20h_.bkp

channel ORA_DISK_1: control file restore from AUTOBACKUP complete

output file name=/u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl

output file name=/u01/app/oracle/fast_recovery_area/DUODB/controlfile/o1_mf_m3bvy4p9_.ctl

Finished restore at 10-MAY-24

RMAN> alter database mount;

released channel: ORA_DISK_1

Statement processed

RMAN> recover database;

Starting recover at 10-MAY-24

Starting implicit crosscheck backup at 10-MAY-24

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=24 device type=DISK

allocated channel: ORA_DISK_2

channel ORA_DISK_2: SID=259 device type=DISK

allocated channel: ORA_DISK_3

channel ORA_DISK_3: SID=25 device type=DISK

allocated channel: ORA_DISK_4

channel ORA_DISK_4: SID=260 device type=DISK

allocated channel: ORA_DISK_5

channel ORA_DISK_5: SID=26 device type=DISK

allocated channel: ORA_DISK_6

channel ORA_DISK_6: SID=261 device type=DISK

allocated channel: ORA_DISK_7

channel ORA_DISK_7: SID=27 device type=DISK

allocated channel: ORA_DISK_8

channel ORA_DISK_8: SID=262 device type=DISK

allocated channel: ORA_DISK_9

channel ORA_DISK_9: SID=28 device type=DISK

allocated channel: ORA_DISK_10

channel ORA_DISK_10: SID=263 device type=DISK

Crosschecked 4 objects

Crosschecked 4 objects

Crosschecked 4 objects

Crosschecked 5 objects

Crosschecked 5 objects

Crosschecked 5 objects

Crosschecked 5 objects

Crosschecked 5 objects

Crosschecked 5 objects

Crosschecked 5 objects

Finished implicit crosscheck backup at 10-MAY-24

Starting implicit crosscheck copy at 10-MAY-24

using channel ORA_DISK_1

using channel ORA_DISK_2

using channel ORA_DISK_3

using channel ORA_DISK_4

using channel ORA_DISK_5

using channel ORA_DISK_6

using channel ORA_DISK_7

using channel ORA_DISK_8

using channel ORA_DISK_9

using channel ORA_DISK_10

Finished implicit crosscheck copy at 10-MAY-24

searching for all files in the recovery area

cataloging files…

cataloging done

List of Cataloged Files

=======================

File Name: /u01/app/oracle/fast_recovery_area/DUODB/autobackup/2024_05_10/o1_mf_s_1168645425_m3wmp20h_.bkp

using channel ORA_DISK_1

using channel ORA_DISK_2

using channel ORA_DISK_3

using channel ORA_DISK_4

using channel ORA_DISK_5

using channel ORA_DISK_6

using channel ORA_DISK_7

using channel ORA_DISK_8

using channel ORA_DISK_9

using channel ORA_DISK_10

starting media recovery

archived log for thread 1 with sequence 7 is already on disk as file /u01/app/oracle/fast_recovery_area/DUODB/onlinelog/o1_mf_1_m3v6f7ld_.log

archived log file name=/u01/app/oracle/fast_recovery_area/DUODB/onlinelog/o1_mf_1_m3v6f7ld_.log thread=1 sequence=7

media recovery complete, elapsed time: 00:00:00

Finished recover at 10-MAY-24

RMAN> alter database open resetlogs;

Statement processed

Kiểm tra controlfile: => đã có file được tạo lại từ autobackup

ls /u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl

ls /u01/app/oracle/fast_recovery_area/DUODB/controlfile/o1_mf_m3bvy4p9_.ctl

[oracle@srv1 ~]$ ls /u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl

/u01/app/oracle/oradata/DUODB/controlfile/o1_mf_m3bvy4o4_.ctl

[oracle@srv1 ~]$ ls /u01/app/oracle/fast_recovery_area/DUODB/controlfile/o1_mf_m3bvy4p9_.ctl

/u01/app/oracle/fast_recovery_area/DUODB/controlfile/o1_mf_m3bvy4p9_.ctl

Chúc các bạn thành công.

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