SYS@orcl11g>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
SYS@orcl11g>select file#,name,status from v$datafile;
FILE# NAME STATUS
---------- ------------------------------------------------------------ ------------------------------------------------------------
1 /opt/oracle/oradata/orcl11g/system01.dbf SYSTEM
2 /opt/oracle/oradata/orcl11g/sysaux01.dbf ONLINE
3 /opt/oracle/oradata/orcl11g/undotbs01.dbf ONLINE
4 /opt/oracle/oradata/orcl11g/users01.dbf ONLINE
5 /opt/oracle/oradata/orcl11g/zbdba.dbf ONLINE
6 /opt/oracle/oradata/orcl11g/zbdba01.dbf RECOVER
7 /opt/oracle/oradata/orcl11g/test.dbf ONLINE
可是我们归档已经丢失，无法完毕介质恢复：SYS@orcl11g>recover datafile 6;
ORA-00279: change 1986632 generated at 10/28/2014 05:16:11 needed for thread 1
ORA-00289: suggestion : /opt/oracle/flash_recovery_area/ORCL11G/archivelog/2014_10_28/o1_mf_1_74_b4yqrglr_.arc
ORA-00280: change 1986632 for thread 1 is in sequence #74
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
ORA-00308: cannot open archived log '/opt/oracle/flash_recovery_area/ORCL11G/archivelog/2014_10_28/o1_mf_1_74_b4yqrglr_.arc'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
所以这时候我们直接改动文件头进行online：[oracle@ogg1 lib]$ 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：SYS@orcl11g>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. SYS@orcl11g>recover datafile 6; Media recovery complete. SYS@orcl11g>alter database datafile 6 online; Database altered.