简体中文版经机器翻译而成,仅供参考。如与英语版出现任何冲突,应以英语版为准。

使用 Oracle Recovery Manager ( RMAN )执行块级恢复

提供者 下载此页面的 PDF

您可以将 SnapManager 配置为在 Oracle 工具 Recovery Manager ( RMAN )中对其备份进行目录,以便使用 RMAN 执行块级恢复。RMAN 可以使用数据库的控制文件或单独的恢复目录数据库作为其存储库。

  1. 要使用 SnapManager 执行完全脱机备份,请输入以下命令:

    SMO backup create -offline-full-profileprofile_name-labelbackup_label_name-verbose

    其中:

    • profile_name 是与备份关联的配置文件的名称

    • backup_label-name 是备份标签的名称

smo backup create -offline -full -profile profile_monthly
-label full_backup -verbose

+
SMO-07109 [INFO ]: Cataloguing all files in backup set with RMAN
TAG=SMC_full_backup_1158773581857, RMAN=ES0/controlfile.
...
SMO-13037 [INFO ]: Successfully completed operation: Backup
SMO-13048 [INFO ]: Operation Status: SUCCESS
SMO-13049 [INFO ]: Elapsed Time: 0:02:20.506
Operation Id [ff8080810dcc47e3010dcc47eb7a0001] succeeded.
+
  1. 要验证备份是否已使用 RMAN 进行编目,请在数据库主机的 RMAN 提示符处输入以下命令:

    列出数据复制标记 tag tag tag : name ;

    RMAN> list datafilecopy tag SMO_full_backup_1158773581857;
    
    Recovery Manager: Release 10.2.0.1.0 - Production on Wed Sep 20 10:33:41 2008
    Copyright (c) 1982, 2008, Oracle. All rights reserved.
    using target database control file instead of recovery catalog
     List of Datafile Copies
     Key File S Completion Time Ckp SCN Ckp Time Name
     ------- ---- - --------------- ---------- --------------- ---
     335 1 A 20-SEP-08 1347825 20-SEP-08
     /opt/<path>/smo/mnt/Host4_ES0_SMO_E_ES0_F_C_0_ff8080810dcc47e3010dcc47eb7a0001
     /system01.dbf
     336 2 A 20-SEP-08 1347825 20-SEP-08
     /opt/<path>/smo/mnt/Host4_ES0_SMO_E_ES0_F_C_0_ff8080810dcc47e3010dcc47eb7a0001
     /undotbs01.dbf
     334 3 A 20-SEP-08 1347825 20-SEP-08
     /opt/<path>/smo/mnt/Host4_ES0_SMO_E_ES0_F_C_0_ff8080810dcc47e3010dcc47eb7a0001
     /sysaux01.dbf
     333 4 A 20-SEP-08 1347825 20-SEP-08
     /opt/<path>/smo/mnt/Host4_ES0_SMO_E_ES0_F_C_0_ff8080810dcc47e3010dcc47eb7a0001
     /user01.dbf
     337 5 A 20-SEP-08 1347825 20-SEP-08
     RMAN>
  2. 要验证数据库并确定是否有任何块损坏,请输入以下命令:

    dbv file=user01.dbf

    以下输出显示两个页面已损坏:

    DBVERIFY: Release 10.2.0.1.0 - Production on Wed Sep 20 13:35:44 2006
    Copyright (c) 1982, 2005, Oracle. All rights reserved.
    DBVERIFY - Verification starting : FILE = user01.dbf
    Page 625 is marked corrupt
    Corrupt block relative dba: 0x01400271 (file 5, block 625)
    Bad header found during dbv:
    Data in bad block:
    type: 240 format: 6 rdba: 0xed323b81
    last change scn: 0x6f07.faa74628 seq: 0x87 flg: 0x02
    spare1: 0x60 spare2: 0x5 spare3: 0xef7d
    consistency value in tail: 0xa210fe71
    check value in block header: 0x13c7
    block checksum disabled...
    Page 627 is marked corrupt
    Corrupt block relative dba: 0x01400273 (file 5, block 627)
    Bad header found during dbv:
    Data in bad block:
    type: 158 format: 7 rdba: 0x2101e16d
    last change scn: 0xe828.42414628 seq: 0xb4 flg: 0xff
    spare1: 0xcc spare2: 0x81 spare3: 0x8665
    consistency value in tail: 0x46d20601
    check value in block header: 0x1a84
    computed block checksum: 0x6c30
    DBVERIFY - Verification complete
    Total Pages Examined : 1280
    Total Pages Processed (Data) : 1123
    Total Pages Failing (Data) : 0
    Total Pages Processed (Index): 0
    Total Pages Failing (Index): 0
    Total Pages Processed (Other): 34
    Total Pages Processed (Seg) : 0
    Total Pages Failing (Seg) : 0
    Total Pages Empty : 120
    Total Pages Marked Corrupt: 2
    Total Pages Influx : 0
    Highest block SCN : 1337349 (0.1337349)
  3. 要使备份中的文件可在主机上访问并可供 RMAN 访问,请使用以下命令挂载备份:

    SMO backup mount -profileprofile_name-labelLabel-verbose

    smo backup mount -profile SALES1 -label full_backup -verbose
    
    SMO-13046 [INFO ]: Operation GUID 8abc013111b9088e0111b908a7560001 starting on Profile SALES1
    SMO-08052 [INFO ]: Beginning to connect mount(s) [/mnt/ssys1/logs, /mnt/ssys1/data] from logical snapshot SMO_SALES1_hsdb1_F_C_1_8abc013111a450480111a45066210001.
    SMO-08025 [INFO ]: Beginning to connect mount /mnt/ssys1/logs from snapshot SMO_SALES1_hsdb1_F_C_1_8abc013111a450480111a45066210001_0 of volume hs_logs.
    SMO-08027 [INFO ]: Finished connecting mount /mnt/ssys1/logs from snapshot SMO_SALES1_hsdb1_F_C_1_8abc013111a450480111a45066210001_0 of volume hs_logs.
    SMO-08025 [INFO ]: Beginning to connect mount /mnt/ssys1/data from snapshot SMO_SALES1_hsdb1_F_C_1_8abc013111a450480111a45066210001_0 of volume hs_data.
    SMO-08027 [INFO ]: Finished connecting mount /mnt/ssys1/data from snapshot SMO_SALES1_hsdb1_F_C_1_8abc013111a450480111a45066210001_0 of volume hs_data.
    SMO-08053 [INFO ]: Finished connecting mount(s) [/mnt/ssys1/logs, /mnt/ssys1/data] from logical snapshot SMO_SALES1_hsdb1_F_C_1_8abc013111a450480111a45066210001.
    SMO-13037 [INFO ]: Successfully completed operation: Backup Mount
    SMO-13048 [INFO ]: Operation Status: SUCCESS
    SMO-13049 [INFO ]: Elapsed Time: 0:01:00.981
    Operation Id [8abc013111b9088e0111b908a7560001] succeeded.
  4. 要恢复块,请在 RMAN 中输入以下命令:

    阻止从标记 backup_RMAN_tag 中恢复数据文件 "` /mountpoint/path/file.dbf` " block block_id

    RMAN> blockrecover datafile
    ‘/mnt/ssys1/Host4_ES0/file01.dbf’ block 625, 626, 627
    from tag SMO_full_backup_1158773581857;
    
    Starting blockrecover at 20-SEP-08 using target database control file instead of recovery catalog
    allocated channel: ORA_DISK_1
    channel ORA_DISK_1: sid=153 devtype=DISK
    channel ORA_DISK_1: restoring block(s) from datafile copy
     /opt/NetApp/smo/mnt/_mnt_ssys1_Host4_ES0_SMO_E_ES0_F_C_0_ff8080810dcc47e3010dcc47eb7a0001/user01.dbf
    starting media recovery
    media recovery complete, elapsed time: 00:00:01
    Finished blockrecover at 20-SEP-08
  5. 要验证块是否已修复,请使用以下命令:

    dbv file=filename.dbf

    以下输出显示没有页面损坏:

    dbv FILE=user01.dbf
    
    DBVERIFY: Release 10.2.0.1.0 - Production on Wed Sep 20 13:40:01 2008
    Copyright (c) 1982, 2008, Oracle. All rights reserved.
    DBVERIFY - Verification starting : FILE = user01.dbf
    DBVERIFY - Verification complete
    Total Pages Examined : 1280
    Total Pages Processed (Data) : 1126
    Total Pages Failing (Data) : 0
    Total Pages Processed (Index): 0
    Total Pages Failing (Index): 0
    Total Pages Processed (Other): 34
    Total Pages Processed (Seg) : 0
    Total Pages Failing (Seg) : 0
    Total Pages Empty : 120
    Total Pages Marked Corrupt : 0
    Total Pages Influx : 0
    Highest block SCN : 1337349 (0.1337349)

    已修复并还原所有损坏的块。