一次数据文件头不一致恢复

Posted 2020-09-20 wzzkaifa

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[email protected]>alter database datafile 6 online;
alter database datafile 6 online
*
ERROR at line 1:
ORA-01113: file 6 needs media recovery
ORA-01110: data file 6: ‘/opt/oracle/oradata/orcl11g/zbdba01.dbf‘

有时候我们数据文件offline之后。再online须要介质恢复

[email protected]>select file#,name,status from v$datafile;
     FILE# NAME                                                         STATUS
---------- ------------------------------------------------------------ ------------------------------------------------------------
         1 /opt/oracle/oradata/orcl11g/system01.dbf                     SYSTEM
         2 /opt/oracle/oradata/orcl11g/sysaux01.dbf                     ONLINE
         3 /opt/oracle/oradata/orcl11g/undotbs01.dbf                    ONLINE
         4 /opt/oracle/oradata/orcl11g/users01.dbf                      ONLINE
         5 /opt/oracle/oradata/orcl11g/zbdba.dbf                        ONLINE
         6 /opt/oracle/oradata/orcl11g/zbdba01.dbf                      RECOVER
         7 /opt/oracle/oradata/orcl11g/test.dbf                         ONLINE

可是我们归档已经丢失，无法完毕介质恢复：

[email protected]>recover datafile 6;
ORA-00279: change 1986632 generated at 10/28/2014 05:16:11 needed for thread 1
ORA-00289: suggestion : /opt/oracle/flash_recovery_area/ORCL11G/archivelog/2014_10_28/o1_mf_1_74_b4yqrglr_.arc
ORA-00280: change 1986632 for thread 1 is in sequence #74


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

ORA-00308: cannot open archived log ‘/opt/oracle/flash_recovery_area/ORCL11G/archivelog/2014_10_28/o1_mf_1_74_b4yqrglr_.arc‘
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3

所以这时候我们直接改动文件头进行online：

[[email protected] lib]$ bbed parfile=par.txt Password: BBED: Release 2.0.0.0.0 - Limited Production on Tue Oct 28 05:20:19 2014 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. ************* !!! For Oracle Internal Use only !!! *************** BBED> BBED> BBED> info all File# Name Size(blks) ----- ---- ---------- 1 /opt/oracle/oradata/orcl11g/system01.dbf 0 2 /opt/oracle/oradata/orcl11g/sysaux01.dbf 0 3 /opt/oracle/oradata/orcl11g/undotbs01.dbf 0 4 /opt/oracle/oradata/orcl11g/users01.dbf 0 5 /opt/oracle/oradata/orcl11g/zbdba.dbf 0 6 /opt/oracle/oradata/orcl11g/zbdba01.dbf 0 7 /opt/oracle/oradata/orcl11g/test.dbf 0 BBED> set file 1 block 1 FILE# 1 BLOCK# 1 BBED> p kcvfhckp struct kcvfhckp, 36 bytes @484 struct kcvcpscn, 8 bytes @484 ub4 kscnbas @484 0x001e526c ub2 kscnwrp @488 0x0000 ub4 kcvcptim @492 0x3362e202 ub2 kcvcpthr @496 0x0001 union u, 12 bytes @500 struct kcvcprba, 12 bytes @500 ub4 kcrbaseq @500 0x0000004d ub4 kcrbabno @504 0x000001a6 ub2 kcrbabof @508 0x0010 ub1 kcvcpetb[0] @512 0x02 ub1 kcvcpetb[1] @513 0x00 ub1 kcvcpetb[2] @514 0x00 ub1 kcvcpetb[3] @515 0x00 ub1 kcvcpetb[4] @516 0x00 ub1 kcvcpetb[5] @517 0x00 ub1 kcvcpetb[6] @518 0x00 ub1 kcvcpetb[7] @519 0x00 BBED> p kcvfhcpc ub4 kcvfhcpc @140 0x000000f9 BBED> p kcvfhccc ub4 kcvfhccc @148 0x000000f8 BBED> set file 6 block 1 FILE# 6 BLOCK# 1 BBED> p kcvfhckp struct kcvfhckp, 36 bytes @484 struct kcvcpscn, 8 bytes @484 ub4 kscnbas @484 0x001e5048 ub2 kscnwrp @488 0x0000 ub4 kcvcptim @492 0x3362e11b ub2 kcvcpthr @496 0x0001 union u, 12 bytes @500 struct kcvcprba, 12 bytes @500 ub4 kcrbaseq @500 0x0000004a ub4 kcrbabno @504 0x00005801 ub2 kcrbabof @508 0x0010 ub1 kcvcpetb[0] @512 0x02 ub1 kcvcpetb[1] @513 0x00 ub1 kcvcpetb[2] @514 0x00 ub1 kcvcpetb[3] @515 0x00 ub1 kcvcpetb[4] @516 0x00 ub1 kcvcpetb[5] @517 0x00 ub1 kcvcpetb[6] @518 0x00 ub1 kcvcpetb[7] @519 0x00 BBED> p kcvfhcpc ub4 kcvfhcpc @140 0x0000043c BBED> p kcvfhccc ub4 kcvfhccc @148 0x0000043b BBED> modify /x 6c52 offset 484 Warning: contents of previous BIFILE will be lost. Proceed?

(Y/N) y File: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6) Block: 1 Offsets: 484 to 995 Dba:0x01800001 ------------------------------------------------------------------------ 6c521e00 00000000 1be16233 01000000 4a000000 01580000 10000000 02000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0d000d00 0d000100 00000000 00000000 00000000 02008001 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 <32 bytes per line> BBED> modify /x 02e2 offset 492 File: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6) Block: 1 Offsets: 492 to 1003 Dba:0x01800001 ------------------------------------------------------------------------ 02e26233 01000000 4a000000 01580000 10000000 02000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0d000d00 0d000100 00000000 00000000 00000000 02008001 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 <32 bytes per line> BBED> modify /x f900 offset 140 File: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6) Block: 1 Offsets: 140 to 651 Dba:0x01800001 ------------------------------------------------------------------------ f9000000 7fe16233 3b040000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 06000000 05005a42 44424100 00000000 00000000 00000000 00000000 00000000 00000000 06000000 00000000 00000000 a3d96233 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 6b946b29 01000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 6c521e00 00000000 02e26233 01000000 4a000000 01580000 10000000 02000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0d000d00 0d000100 <32 bytes per line> BBED> modify /x f800 offset 148 File: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6) Block: 1 Offsets: 148 to 659 Dba:0x01800001 ------------------------------------------------------------------------ f8000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 06000000 05005a42 44424100 00000000 00000000 00000000 00000000 00000000 00000000 06000000 00000000 00000000 a3d96233 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 6b946b29 01000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 6c521e00 00000000 02e26233 01000000 4a000000 01580000 10000000 02000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0d000d00 0d000100 00000000 00000000 <32 bytes per line> BBED> sum apply Check value for File 6, Block 1: current = 0x1924, required = 0x1924 BBED> verify DBVERIFY - Verification starting FILE = /opt/oracle/oradata/orcl11g/zbdba01.dbf BLOCK = 1 DBVERIFY - Verification complete Total Blocks Examined : 1 Total Blocks Processed (Data) : 0 Total Blocks Failing (Data) : 0 Total Blocks Processed (Index): 0 Total Blocks Failing (Index): 0 Total Blocks Empty : 0 Total Blocks Marked Corrupt : 0 Total Blocks Influx : 0 Message 531 not found; product=RDBMS; facility=BBED BBED> show all FILE# 6 BLOCK# 1 OFFSET 148 DBA 0x01800001 (25165825 6,1) FILENAME /opt/oracle/oradata/orcl11g/zbdba01.dbf BIFILE bifile.bbd LISTFILE filelist.txt BLOCKSIZE 8192 MODE Edit EDIT Unrecoverable IBASE Dec OBASE Dec WIDTH 80 COUNT 512 LOGFILE log.bbd SPOOL No BBED> p kcvfhckp struct kcvfhckp, 36 bytes @484 struct kcvcpscn, 8 bytes @484 ub4 kscnbas @484 0x001e526c ub2 kscnwrp @488 0x0000 ub4 kcvcptim @492 0x3362e202 ub2 kcvcpthr @496 0x0001 union u, 12 bytes @500 struct kcvcprba, 12 bytes @500 ub4 kcrbaseq @500 0x0000004a ub4 kcrbabno @504 0x00005801 ub2 kcrbabof @508 0x0010 ub1 kcvcpetb[0] @512 0x02 ub1 kcvcpetb[1] @513 0x00 ub1 kcvcpetb[2] @514 0x00 ub1 kcvcpetb[3] @515 0x00 ub1 kcvcpetb[4] @516 0x00 ub1 kcvcpetb[5] @517 0x00 ub1 kcvcpetb[6] @518 0x00 ub1 kcvcpetb[7] @519 0x00 BBED> p kcvfhcpc ub4 kcvfhcpc @140 0x000000f9 BBED> p kcvfhccc ub4 kcvfhccc @148 0x000000f8 BBED>

改动完毕后我们再次恢复该数据文件：

[email protected]>startup
ORACLE instance started.
Total System Global Area  417546240 bytes
Fixed Size                  2213936 bytes
Variable Size             318769104 bytes
Database Buffers           92274688 bytes
Redo Buffers                4288512 bytes
Database mounted.
Database opened.
[email protected]>recover datafile 6;
Media recovery complete.
[email protected]>alter database datafile 6 online;

Database altered.

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