标签归档：bbed

在win 64位平台上运行bbed(支持ORACLE 10g 11g 12c)

发表于 2015 年 8 月 16 日 由 惜分飞

很多朋友反馈在win 64位操作系统之上无法使用bbed(包括9i,10g,11g,12c数据库版本),以前写过一篇文章,完美实现了在win平台的各个版本的数据库版本之上实现使用bbed(在win中运行bbed程序),可惜很遗憾没有注明平台信息,留下了不少疑问,今天在自己的电脑上再次实现此功能,用来证明win 64位的平台之上也可以运行bbed程序(数据库版本包括10g,11g,12c,在10g之前x86架构中无win 64位版本数据库,因此我也无能为力).

操作系统版本64位
本机测试为win 7 64位操作系统
win-64

win-64-2

数据库版本64位
本机测试数据库版本为12.1.0.2 64位版本(因为12c都支持,那对于10g/11g更是不在话下）
db-64

bbed运行情况
这里的bbed只是运行起来,并未加载数据文件,因此这里看到的FILENAME为空,但是不妨碍证明bbed可以在win平台,64位的数据库中运行
bbed-win64

整体证明win 64位平台,64位数据库运行bbed
一图抵上千言万语,让我们使用一幅完整截图来说明,bbed是可以运行在win 64位平台的64位版本的数据库之上(而且这里使用了目前最新的12.1.0.2版本)
oracle-64-bbed-10g-11g-12c

发表在 非常规恢复 | 标签为 , , , , , | 2 条评论

dbms_diskgroup拷贝block/datafile

发表于 2015 年 4 月 29 日 由 惜分飞

对于asm而言,如果我们要操作里面的数据文件,虽然从11.2开始有asmcmd的cp可能进行拷贝,但是如果想对数据文件中的某个block进行拷贝出来asm到文件系统(或者拷贝某个文件系统的block到asm中),还是比较麻烦的事情(请见:bbed修改ASM中数据)。其实oracle官方提供了dbms_diskgroup这个包,可以通过sqlplus直接操作asm里面的block/datafile,非常方便,这里简单列举几个例子:

dbms_diskgroup获取asm中文件属性

SQL> declare
  2  v_filename varchar2(4000);
  3  v_filetype number;
  4  v_filesize number;
  5  v_lbks number;
  6  v_typename varchar2(4000);
  7  begin
  8  dbms_output.enable(5000);
  9  v_filename := '&file_name';
 10  dbms_diskgroup.getfileattr(v_filename,v_filetype,v_filesize,v_lbks);
 11  select decode(v_filetype,1,'Control File',2,'Data File',3,'Online Log File',4,'Archive Log',5,'Trace File',6,'Temporary File',
 12  7,'Not Used',8,'Not Used',9,'Backup Piece',10,'Incremental Backup Piece',11,'Archive Backup Piece',12,'Data File Copy',
 13  13,'Spfile',14,'Disaster Recovery Configuration',15,'Storage Manager Disk',16,'Change Tracking File',17,'Flashback Log File',
 14  18,'DataPump Dump File',19,'Cross Platform Converted File',20,'Autobackup',21,'Any OS file',22,'Block Dump File',
 15  23,'CSS Voting File',24,'CRS') into v_typename from dual;
 16  dbms_output.put_line('File: '||v_filename); dbms_output.new_line;
 17  dbms_output.put_line('Type: '||v_filetype||' '||v_typename); dbms_output.new_line;
 18  dbms_output.put_line('Size (Logical Block Size): '||v_filesize); dbms_output.new_line;
 19  dbms_output.put_line('Logical Block Size: '||v_lbks); dbms_output.new_line;
 20  end;
 21  /
Enter value for file_name: +DATA/xifenfei/datafile/system.256.878224279
old   9: v_filename := '&file_name';
new   9: v_filename := '+DATA/xifenfei/datafile/system.256.878224279';
File: +DATA/xifenfei/datafile/system.256.878224279
Type: 12 Data File Copy
Size (Logical Block Size): 94720
Logical Block Size: 8192

PL/SQL procedure successfully completed.

创建测试表t_xifenfei

SQL> create table t_xifenfei tablespace users
  2  as select 'www.xifenfei.com' xifenfei from dual;

Table created.

SQL> select rowid,xifenfei from t_xifenfei;

ROWID              XIFENFEI
------------------ ----------------
AAAVU3AAEAAAACrAAA www.xifenfei.com


SQL> select   
  2   dbms_rowid.rowid_relative_fno(rowid) rel_fno,
  3  dbms_rowid.rowid_block_number(rowid )block_no
  4  from t_xifenfei;

   REL_FNO   BLOCK_NO
---------- ----------
         4        171


SQL> alter system checkpoint;

System altered.

SQL> /

System altered.

SQL> alter system switch logfile;

System altered.

SQL> select name from v$datafile where file#=4;

NAME
--------------------------------------------------------------------------------
+DATA/xifenfei/datafile/users.259.878224279

dbms_diskgroup拷贝asm datafile 4 block 171

SQL> declare
  2  v_AsmFilename varchar2(4000);
  3  v_FsFilename varchar2(4000);
  4  v_offstart number;
  5  v_numblks number;
  6  v_filetype number;
  7  v_filesize number;
  8  v_lbks number;
  9  v_typename varchar2(4000);
 10  v_pblksize number;
 11  v_handle number;
 12  begin
 13  dbms_output.enable(500000);
 14  v_AsmFilename := '&ASM_File_Name';
 15  v_offstart := '&block_to_extract';
 16  v_numblks := '&number_of_blocks_to_extract';
 17  v_FsFilename := '&FileSystem_File_Name';
 18  dbms_diskgroup.getfileattr(v_AsmFilename,v_filetype,v_filesize,v_lbks);
 19  dbms_diskgroup.open(v_AsmFilename,'r',v_filetype,v_lbks,v_handle,v_pblksize,v_filesize);
 20  dbms_diskgroup.close(v_handle);
 21  select decode(v_filetype,1,'Control File',2,'Data File',3,'Online Log File',4,'Archive Log',5,'Trace File',6,'Temporary File',
 22  7,'Not Used',8,'Not Used',9,'Backup Piece',10,'Incremental Backup Piece',11,'Archive Backup Piece',12,'Data File Copy',
 23  13,'Spfile',14,'Disaster Recovery Configuration',15,'Storage Manager Disk',16,'Change Tracking File',17,'Flashback Log File',
 24  18,'DataPump Dump File',19,'Cross Platform Converted File',20,'Autobackup',21,'Any OS file',22,'Block Dump File',
 25  23,'CSS Voting File',24,'CRS') into v_typename from dual;
 26  dbms_output.put_line('File: '||v_AsmFilename); dbms_output.new_line;
 27  dbms_output.put_line('Type: '||v_filetype||' '||v_typename); dbms_output.new_line;
 28  dbms_output.put_line('Size (in logical blocks): '||v_filesize); dbms_output.new_line;
 29  dbms_output.put_line('Logical Block Size: '||v_lbks); dbms_output.new_line;
 30  dbms_output.put_line('Physical Block Size: '||v_pblksize); dbms_output.new_line;
 31  dbms_diskgroup.patchfile(v_AsmFilename,v_filetype,v_lbks,v_offstart,0,v_numblks,v_FsFilename,v_filetype,1,1);
 32  end;
 33  /
Enter value for asm_file_name: +DATA/xifenfei/datafile/users.259.878224279
old  14: v_AsmFilename := '&ASM_File_Name';
new  14: v_AsmFilename := '+DATA/xifenfei/datafile/users.259.878224279';
Enter value for block_to_extract: 171
old  15: v_offstart := '&block_to_extract';
new  15: v_offstart := '171';
Enter value for number_of_blocks_to_extract: 1
old  16: v_numblks := '&number_of_blocks_to_extract';
new  16: v_numblks := '1';
Enter value for filesystem_file_name: /tmp/xifenfei.dbf
old  17: v_FsFilename := '&FileSystem_File_Name';
new  17: v_FsFilename := '/tmp/xifenfei.dbf';
File: +DATA/xifenfei/datafile/users.259.878224279
Type: 12 Data File Copy
Size (in logical blocks): 640
Logical Block Size: 8192
Physical Block Size: 512

PL/SQL procedure successfully completed.


[grid@xifenfei ~]$ ls -l /tmp/xifenfei.dbf 
-rw-r----- 1 grid oinstall 16384 Apr 28 15:55 /tmp/xifenfei.dbf

这里注意拷贝出来的block size 为8192,由于默认写了block 0信息，因此这里显示大小为2*block size=16384

bbed修改拷贝出来block内容

SQL> select dump('xifenfei',16) from dual;

DUMP('XIFENFEI',16)
-------------------------------------
Typ=96 Len=8: 78,69,66,65,6e,66,65,69

SQL> select dump('XIFENFEI',16) from dual;

DUMP('XIFENFEI',16)
-------------------------------------
Typ=96 Len=8: 58,49,46,45,4e,46,45,49


[oracle@xifenfei tmp]$ bbed filename='/tmp/xifenfei.dbf' blocksize=8192
Password: 

BBED: Release 2.0.0.0.0 - Limited Production on Tue Apr 28 16:24:35 2015

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

************* !!! For Oracle Internal Use only !!! ***************

BBED> show
        FILE#           0
        BLOCK#          1
        OFFSET          0
        DBA             0x00000000 (0 0,1)
        FILENAME        /tmp/xifenfei.dbf
        BIFILE          bifile.bbd
        LISTFILE       
        BLOCKSIZE       8192
        MODE            Browse
        EDIT            Unrecoverable
        IBASE           Dec
        OBASE           Dec
        WIDTH           80
        COUNT           512
        LOGFILE         log.bbd
        SPOOL           No

BBED> map       
 File: /tmp/xifenfei.dbf (0)
 Block: 1                                     Dba:0x00000000
------------------------------------------------------------
 KTB Data Block (Table/Cluster)

 struct kcbh, 20 bytes                      @0       

 struct ktbbh, 96 bytes                     @20      

 struct kdbh, 14 bytes                      @124     

 struct kdbt[1], 4 bytes                    @138     

 sb2 kdbr[1]                                @142     

 ub1 freespace[8024]                        @144     

 ub1 rowdata[20]                            @8168    

 ub4 tailchk                                @8188    


BBED> p *kdbr[0]
rowdata[0]
----------
ub1 rowdata[0]                              @8168     0x2c

BBED> d /v offset 8168
 File: /tmp/xifenfei.dbf (0)
 Block: 1       Offsets: 8168 to 8191  Dba:0x00000000
-------------------------------------------------------
 2c000110 7777772e 78696665 6e666569 l ,...www.xifenfei
 2e636f6d 020624bc                   l .com..$.

 <16 bytes per line>

BBED> r /x c
BBED-00200: invalid keyword (r)


BBED> x /rc 
rowdata[0]                                  @8168    
----------
flag@8168: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8169: 0x00
cols@8170:    1

col   0[16] @8171: www.xifenfei.com


BBED> set mode edit
        MODE            Edit

BBED> set offset 8171
        OFFSET          8171

BBED> set count 32
        COUNT           32

BBED> d
 File: /tmp/xifenfei.dbf (0)
 Block: 1                Offsets: 8171 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 10777777 2e786966 656e6665 692e636f 6d020624 bc 

 <32 bytes per line>

BBED> 

BBED> set offset +5
        OFFSET          8176

BBED> d
 File: /tmp/xifenfei.dbf (0)
 Block: 1                Offsets: 8176 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 78696665 6e666569 2e636f6d 020624bc 

 <32 bytes per line>

BBED> m /x 58494645
 File: /tmp/xifenfei.dbf (0)
 Block: 1                Offsets: 8176 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 58494645 6e666569 2e636f6d 020624bc 

 <32 bytes per line>

BBED> set offset +4
        OFFSET          8180

BBED> d
 File: /tmp/xifenfei.dbf (0)
 Block: 1                Offsets: 8180 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 6e666569 2e636f6d 020624bc 

 <32 bytes per line>

BBED> m /x 4e464549
 File: /tmp/xifenfei.dbf (0)
 Block: 1                Offsets: 8180 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 4e464549 2e636f6d 020624bc 

 <32 bytes per line>

BBED> d /v offset 8168
 File: /tmp/xifenfei.dbf (0)
 Block: 1       Offsets: 8168 to 8191  Dba:0x00000000
-------------------------------------------------------
 2c000110 7777772e 58494645 4e464549 l ,...www.XIFENFEI
 2e636f6d 020624bc                   l .com..$.

 <16 bytes per line>

BBED> x /rc
rowdata[0]                                  @8168    
----------
flag@8168: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8169: 0x00
cols@8170:    1

col   0[16] @8171: www.XIFENFEI.com


BBED> sum apply
Check value for File 0, Block 1:
current = 0x3060, required = 0x3060

这里通过bbed把拷贝出来的datafile 4 block 171中的www.xifenfei.com修改为www.XIFENFEI.com

dbms_diskgroup拷贝os block to asm datafile 4 block 171

SQL> declare
  2  v_FsFileName varchar2(4000);
  3  v_AsmFileName varchar2(4000);
  4  v_FsFileType number;
  5  v_AsmFileType number;
  6  v_offstart number;
  7  v_filesize number;
  8  v_lbks number;
  9  v_typename varchar2(4000); 
 10  v_handle number;
 11  error number;
 12  txt varchar2(4000);
 13  begin
 14  dbms_output.enable(500000);
 15  v_FsFileName := '&file_with_patched_block';
 16  v_AsmFileName := '&file_to_patch_in_ASM';
 17  v_offstart := '&block_to_patch';
 18  dbms_diskgroup.getfileattr(v_AsmFileName,v_AsmFileType,v_filesize,v_lbks);
 19  select decode(v_AsmFileType,1,'Control File',2,'Data File',3,'Online Log File',4,'Archive Log',5,'Trace File',6,'Temporary File',
 20  7,'Not Used',8,'Not Used',9,'Backup Piece',10,'Incremental Backup Piece',11,'Archive Backup Piece',12,'Data File Copy',
 21  13,'Spfile',14,'Disaster Recovery Configuration',15,'Storage Manager Disk',16,'Change Tracking File',
 22  17,'Flashback Log File',
 23  18,'DataPump Dump File',19,'Cross Platform Converted File',20,'Autobackup',21,'Any OS file',22,'Block Dump File',
 24  23,'CSS Voting File',24,'CRS') into v_typename from dual;
 25  dbms_output.put_line('File: '||v_AsmFileName); dbms_output.new_line;
 26  dbms_output.put_line('Type: '||v_AsmFileType||' '||v_typename); dbms_output.new_line;
 27  dbms_output.put_line('Size: '||v_filesize); dbms_output.new_line;
 28  dbms_output.put_line('Logical Block Size: '||v_lbks); dbms_output.new_line;
 29  dbms_diskgroup.patchfile(v_FsFileName,12,v_lbks,1,0,1,v_AsmFileName,v_AsmFileType,v_offstart,0);
 30  end;
 31  /
Enter value for file_with_patched_block: /tmp/xifenfei.dbf
old  15: v_FsFileName := '&file_with_patched_block';
new  15: v_FsFileName := '/tmp/xifenfei.dbf';
Enter value for file_to_patch_in_asm: +DATA/xifenfei/datafile/users.259.878224279
old  16: v_AsmFileName := '&file_to_patch_in_ASM';
new  16: v_AsmFileName := '+DATA/xifenfei/datafile/users.259.878224279';
Enter value for block_to_patch: 171
old  17: v_offstart := '&block_to_patch';
new  17: v_offstart := '171';
File: +DATA/xifenfei/datafile/users.259.878224279
Type: 12 Data File Copy
Size: 640
Logical Block Size: 8192

PL/SQL procedure successfully completed.

验证修改block是否正确

SQL> shutdown abort
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area  952020992 bytes
Fixed Size                  2258960 bytes
Variable Size             306186224 bytes
Database Buffers          637534208 bytes
Redo Buffers                6041600 bytes
Database mounted.
Database opened.
SQL> select rowid,xifenfei from t_xifenfei;

ROWID              XIFENFEI
------------------ ----------------
AAAVU3AAEAAAACrAAA www.XIFENFEI.com

dbms_diskgroup拷贝asm datafile to os

SQL> declare
  2  v_AsmFileName varchar2(4000);
  3  v_FsFileName varchar2(4000);
  4  v_filetype number;
  5  v_filesize number;
  6  v_lbks number;
  7  v_typename varchar2(4000);
  8  v_pblksize number;
  9  v_handle number;
 10  begin
 11  dbms_output.enable(500000);
 12  v_AsmFileName := '&ASM_file_name';
 13  v_FsFileName := '&FileSystem_file_name';
 14  dbms_diskgroup.getfileattr(v_AsmFileName,v_filetype,v_filesize,v_lbks);
 15  dbms_diskgroup.open(v_AsmFileName,'r',v_filetype,v_lbks,v_handle,v_pblksize,v_filesize);
 16  dbms_diskgroup.close(v_handle);
 17  select decode(v_filetype,1,'Control File',2,'Data File',3,'Online Log File',4,'Archive Log',5,'Trace File',6,'Temporary File',
 18  7,'Not Used',8,'Not Used',9,'Backup Piece',10,'Incremental Backup Piece',11,'Archive Backup Piece',12,'Data File Copy',
 19  13,'Spfile',14,'Disaster Recovery Configuration',15,'Storage Manager Disk',16,'Change Tracking File',17,'Flashback Log File',
 20  18,'DataPump Dump File',19,'Cross Platform Converted File',20,'Autobackup',21,'Any OS file',22,'Block Dump File',
 21  23,'CSS Voting File',24,'CRS') into v_typename from dual;
 22  dbms_output.put_line('File: '||v_AsmFileName); dbms_output.new_line;
 23  dbms_output.put_line('Type: '||v_filetype||' '||v_typename); dbms_output.new_line;
 24  dbms_output.put_line('Size (in logical blocks): '||v_filesize); dbms_output.new_line;
 25  dbms_output.put_line('Logical Block Size: '||v_lbks); dbms_output.new_line;
 26  dbms_output.put_line('Physical Block Size: '||v_pblksize); dbms_output.new_line;
 27  dbms_diskgroup.patchfile(v_AsmFileName,v_filetype,v_lbks,1,0,v_filesize,v_FsFileName,2,1,1);
 28  end;
 29  /
Enter value for asm_file_name: +DATA/xifenfei/datafile/users.259.878224279
old  12: v_AsmFileName := '&ASM_file_name';
new  12: v_AsmFileName := '+DATA/xifenfei/datafile/users.259.878224279';
Enter value for filesystem_file_name: /tmp/users01.dbf
old  13: v_FsFileName := '&FileSystem_file_name';
new  13: v_FsFileName := '/tmp/users01.dbf';
File: +DATA/xifenfei/datafile/users.259.878224279
Type: 12 Data File Copy
Size (in logical blocks): 640
Logical Block Size: 8192
Physical Block Size: 512

PL/SQL procedure successfully completed.


[grid@xifenfei ~]$ ls -l /tmp/users01.dbf 
-rw-r----- 1 grid oinstall 5251072 Apr 28 16:39 /tmp/users01.dbf

通过上述几个简单例子说明:dbms_diskgroup可以看asm file的属性,可以拷贝asm中的datafile中的某个block到os,也可以从os拷贝到asm,可以从asm中直接拷贝文件文件到os等功能

发表在 Oracle ASM | 标签为 , , , , , | 评论关闭

使用bbed 修复I_OBJ4 index 报ORA-8102错误

发表于 2015 年 3 月 14 日 由 惜分飞

数据库执行创建表操作报ORA-8102错误

SQL> startup
ORACLE instance started.

Total System Global Area 1570009088 bytes
Fixed Size                  2253584 bytes
Variable Size             469765360 bytes
Database Buffers         1090519040 bytes
Redo Buffers                7471104 bytes
Database mounted.
Database opened.

SQL> create table t1 as select * from dba_users;
create table t1 as select * from dba_users
                                 *
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-08102: index key not found, obj# 87404, file 1, block 97266 (2)

分析ORA-8102错误

SQL> col OBJECT_NAME for a30
SQL> select object_name,object_type from dba_objects where object_id=87404;

OBJECT_NAME                    OBJECT_TYPE
------------------------------ -------------------
I_OBJ4                         INDEX


SQL> select /*+ index(t i_obj4) */ DATAOBJ#,type#,owner# from obj$  t  
minus
  2    3  select /*+ full(t1) */ DATAOBJ#,type#,owner# from obj$  t1; 

  DATAOBJ#      TYPE#     OWNER#
---------- ---------- ----------
     87420          0          0

SQL> select /*+ full(t1) */ DATAOBJ#,type#,owner# from obj$  t1
  2  minus
  3  select /*+ index(t i_obj4) */ DATAOBJ#,type#,owner# from obj$  t  
  4  ;

  DATAOBJ#      TYPE#     OWNER#
---------- ---------- ----------
     87422          0          0

SQL> alter system dump datafile 1 block 97266;

System altered.

SQL>  select value from v$diag_info where name='Default Trace File';

VALUE
--------------------------------------------------------------------------------
/u01/app/oracle/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_ora_27037.trc


SQL> ALTER SESSION SET EVENTS '802 trace name errorstack level 3';

Session altered.

SQL> create table t1 as select * from dual;           
create table t1 as select * from dual
                                 *
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-08102: index key not found, obj# 87404, file 1, block 97266 (2)


SQL>  select value from v$diag_info where name='Default Trace File';

VALUE
--------------------------------------------------------------------------------
/u01/app/oracle/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_ora_27037.trc


*** 2015-03-14 14:46:33.640
kdk key 8102.2:
  ncol: 4, len: 16
  key: (16):  04 c3 09 4b 17 01 80 01 80 06 00 41 7f 25 00 28
  mask: (4096):

*** 2015-03-14 14:46:33.644
dbkedDefDump(): Starting a non-incident diagnostic dump (flags=0x0, level=3, mask=0x0)
----- Error Stack Dump -----
----- Current SQL Statement for this session (sql_id=4yyb4104skrwj) -----
update obj$ set obj#=:4, type#=:5,ctime=:6,mtime=:7,stime=:8,status=:9,dataobj#=:10,flags=:11,
oid$=:12,spare1=:13, spare2=:14 where owner#=:1 and name=:2 and namespace=:3 and 
remoteowner is null and linkname is null and subname is null

这里可以的出来由于obj$中的dataobj#为87422,而i_obj4中的dataobj#为87420,因此两者不一致。
另外通过相关trace发现,在创建表操作中会调用update obj$的一个递归操作,而该操作会更新dataobj#,但是由于该值在表和index中不匹配,因此出现ORA-08102导致创建表不成功

使用bbed 修复ORA-8102

[oracle@localhost ~]$ bbed blocksize=8192 mode=edit filename='/u01/app/oracle/oradata/xifenfei/system01.dbf'
Password: 

BBED: Release 2.0.0.0.0 - Limited Production on Sat Mar 14 14:55:22 2015

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

************* !!! For Oracle Internal Use only !!! ***************

BBED> set block 97266
        BLOCK#          97266

BBED> f /x 04c3
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2714 to 3225           Dba:0x00000000
------------------------------------------------------------------------
 04c3094a 5f02c115 01800600 417f2500 0f000204 c3094b14 02c11501 80060041 
 7f25000e 000204c3 094b1202 c1140180 0600417f 25000d00 0004c309 4b150180 

 <32 bytes per line>

BBED> f
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2733 to 3244           Dba:0x00000000
------------------------------------------------------------------------
 04c3094b 1402c115 01800600 417f2500 0e000204 c3094b12 02c11401 80060041 
 7f25000d 000004c3 094b1501 80018006 00417f25 00280100 04c3094b 10018001 

 <32 bytes per line>

BBED> f
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2752 to 3263           Dba:0x00000000
------------------------------------------------------------------------
 04c3094b 1202c114 01800600 417f2500 0d000004 c3094b15 01800180 0600417f 
 25002801 0004c309 4b100180 01800600 417f2500 28000004 c3094b08 02c10201 

 <32 bytes per line>

BBED> f
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2771 to 3282           Dba:0x00000000
------------------------------------------------------------------------
 04c3094b 15018001 80060041 7f250028 010004c3 094b1001 80018006 00417f25 
 00280000 04c3094b 0802c102 01800600 417f2500 24000004 c3094b09 02c10201 
 
 <32 bytes per line>

BBED> f
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2789 to 3300           Dba:0x00000000
------------------------------------------------------------------------
 04c3094b 10018001 80060041 7f250028 000004c3 094b0802 c1020180 0600417f 
 25002400 0004c309 4b0902c1 02018006 00417f25 00250000 04c3094b 0a02c103 

 <32 bytes per line>


BBED> set count 32
        COUNT           32

BBED> set offset 2771
        OFFSET          2771

BBED> d
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2771 to 2802           Dba:0x00000000
------------------------------------------------------------------------
 04c3094b 15018001 80060041 7f250028 010004c3 094b1001 80018006 00417f25 

 <32 bytes per line>

BBED> set offset +4
        OFFSET          2775

BBED> d
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2775 to 2806           Dba:0x00000000
------------------------------------------------------------------------
 15018001 80060041 7f250028 010004c3 094b1001 80018006 00417f25 00280000 

 <32 bytes per line>

BBED> m /x 17  
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 2775 to 2806           Dba:0x00000000
------------------------------------------------------------------------
 17018001 80060041 7f250028 010004c3 094b1001 80018006 00417f25 00280000 

 <32 bytes per line>

BBED> sum apply
Check value for File 0, Block 97266:
current = 0x7955, required = 0x7955

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/app/oracle/oradata/xifenfei/system01.dbf
BLOCK = 97266

Block 97266 is corrupt
Corrupt block relative dba: 0x00417bf2 (file 0, block 97266)
Fractured block found during verification
Data in bad block:
 type: 6 format: 2 rdba: 0x00417bf2
 last change scn: 0x0000.00102ed8 seq: 0x1 flg: 0x06
 spare1: 0x0 spare2: 0x0 spare3: 0x0
 consistency value in tail: 0x2ed80602
 check value in block header: 0x7955
 computed block checksum: 0x0


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   : 1
Total Blocks Influx           : 2
Message 531 not found;  product=RDBMS; facility=BBED


BBED> set offset 8188
        OFFSET          8188

BBED> d
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0206d82e 

 <32 bytes per line>

BBED> m /x 01
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 97266            Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0106d82e 

 <32 bytes per line>

BBED> sum
Check value for File 0, Block 97266:
current = 0x7955, required = 0x7956

BBED> sum apply
Check value for File 0, Block 97266:
current = 0x7956, required = 0x7956

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/app/oracle/oradata/xifenfei/system01.dbf
BLOCK = 97266


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 1
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

通过bbed修改i_obj4中的dataobj#值使之和obj$中对应值一致

验证确认ORA-8102被修复

SQL> shutdown abort
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area 1570009088 bytes
Fixed Size                  2253584 bytes
Variable Size             469765360 bytes
Database Buffers         1090519040 bytes
Redo Buffers                7471104 bytes
Database mounted.
Database opened.
SQL>  create table t1 as select * from dual; 

Table created.

通过使用bbed修改index值后,ORA-8102问题解决,可以执行创建表操作
姊妹篇见:通过bbed修改obj$中dataobj$重现I_OBJ4索引报ORA-08102错误

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