标签归档:ORA-08102

通过bbed修改obj$中dataobj$重现I_OBJ4索引报ORA-08102错误

在最近的数据库恢复中,经历了多次11.2库由于各种原因,数据库打开后,报ORA-8102错误,而且错误对象是OBJ$上的I_OBJ4这个index上,而且不能创建新表,周末开会闲着无事,进行了一个简单的模拟重现
数据库版本信息11.2.0.4

SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
PL/SQL Release 11.2.0.4.0 - Production
CORE    11.2.0.4.0      Production
TNS for Linux: Version 11.2.0.4.0 - Production
NLSRTL Version 11.2.0.4.0 - Production

定位需要破坏的OBJ$上记录,为了使之和I_OBJ4中记录不一致,从而实现ORA-8102错误

SQL> select object_id,object_type from dba_objects where object_name='I_OBJ4';

 OBJECT_ID OBJECT_TYPE
---------- -------------------
     87404 INDEX

SQL> select max(DATAOBJ#) from obj$;

MAX(DATAOBJ#)
-------------
        87420

SQL> select dump(87420,16) from dual;

DUMP(87420,16)
-----------------------
Typ=2 Len=4: c3,9,4b,15

SQL> select dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) block#,
dbms_rowid.rowid_row_number(rowid) row#
  2    3  from obj$ where DATAOBJ#=87420;

     FILE#     BLOCK#       ROW#
---------- ---------- ----------
         1      98085         40

SQL>  alter system dump datafile 1  block 98085;

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_26373.trc

--dump该记录显示
tab 0, row 40, @0x11fc
tl: 72 fb: --H-FL-- lb: 0x0  cc: 18
col  0: [ 2]  c1 02
col  1: [ 4]  c3 09 4b 15
col  2: [ 1]  80
col  3: [12]  5f 4e 45 58 54 5f 4f 42 4a 45 43 54
col  4: [ 2]  c1 02
col  5: *NULL*
col  6: [ 1]  80
col  7: [ 7]  78 71 08 18 0c 26 24
col  8: [ 7]  78 73 03 0d 15 2e 2b
col  9: [ 7]  78 71 08 18 0c 26 24
col 10: [ 1]  80
col 11: *NULL*
col 12: *NULL*
col 13: [ 1]  80
col 14: *NULL*
col 15: [ 1]  80
col 16: [ 4]  c3 07 38 24
col 17: [ 1]  80
tab 0, row 41, @0x9af
tl: 2 fb: --HDFL-- lb: 0x2

这里我们知道i_obj4中的dataobj#最大值为87420对应的16进制记录为04 c3 09 4b 15

使用bbed破坏记录,修改dataobj#中的值,使得obj$.dataobj#和i_obj4中的dataobj#不匹配

SQL> select name from v$datafile where file#=1;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/xifenfei/system01.dbf


SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.


[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 14:23:02 2015

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

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

BBED> show all
        FILE#           0
        BLOCK#          1
        OFFSET          0
        DBA             0x00000000 (0 0,1)
        FILENAME        /u01/app/oracle/oradata/xifenfei/system01.dbf
        BIFILE          bifile.bbd
        LISTFILE       
        BLOCKSIZE       8192
        MODE            Edit
        EDIT            Unrecoverable
        IBASE           Dec
        OBASE           Dec
        WIDTH           80
        COUNT           512
        LOGFILE         log.bbd
        SPOOL           No

BBED> set block 98085
        BLOCK#          98085
BBED> p *kdbr[40]
rowdata[2446]
-------------
ub1 rowdata[2446]                           @4696     0x2c


BBED> x /rnnncnnncc
rowdata[2446]                               @4696    
-------------
flag@4696: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@4697: 0x00
cols@4698:   18

col    0[2] @4699: 1 
col    1[4] @4702: 87420 
col    2[1] @4707: 0 
col   3[12] @4709: _NEXT_OBJECT
col    4[2] @4722: 1 
col    5[0] @4725: *NULL*
col    6[1] @4726: 0 
col    7[7] @4728: xq...&$
col    8[7] @4736: xs....+
col    9[7] @4744: xq...&$
col   10[1] @4752: .
col   11[0] @4754: *NULL*
col   12[0] @4755: *NULL*
col   13[1] @4756: .
col   14[0] @4758: *NULL*
col   15[1] @4759: .
col   16[4] @4761: Ã.8$
col   17[1] @4766: .


BBED> set block 98085
        BLOCK#          98085

BBED> set offset 4702
        OFFSET          4702

BBED> set count 32
        COUNT           32

BBED> d
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 98085            Offsets: 4702 to 4733           Dba:0x00000000
------------------------------------------------------------------------
 04c3094b 1501800c 5f4e4558 545f4f42 4a454354 02c102ff 01800778 7108180c 

 <32 bytes per line>

BBED> set offset +4
        OFFSET          4706

BBED> d
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 98085            Offsets: 4706 to 4737           Dba:0x00000000
------------------------------------------------------------------------
 1501800c 5f4e4558 545f4f42 4a454354 02c102ff 01800778 7108180c 26240778 

 <32 bytes per line>

BBED> m /x 17 
 File: /u01/app/oracle/oradata/xifenfei/system01.dbf (0)
 Block: 98085            Offsets: 4706 to 4737           Dba:0x00000000
------------------------------------------------------------------------
 1701800c 5f4e4558 545f4f42 4a454354 02c102ff 01800778 7108180c 26240778 

 <32 bytes per line>

BBED> sum apply
Check value for File 0, Block 98085:
current = 0xd361, required = 0xd361

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/app/oracle/oradata/xifenfei/system01.dbf
BLOCK = 98085


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 1
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

使用bbed 修改04 c3 09 4b 15为04 c3 09 4b 17

重现在obj$的I_OBJ4 index上报ORA-8102错误,而且不能创建新对象

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)

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

如果修复该问题请见:使用bbed 修复I_OBJ4 index 报ORA-8102

发表在 Oracle | 标签为 , , , | 评论关闭

bootstrap$核心index(I_OBJ1,I_USER1,I_FILE#_BLOCK#,I_IND1,I_TS#,I_CDEF1等)异常恢复—ORA-00701错误解决

在Oracle使用的过程中,经常遭遇一些核心index出现异常,导致数据库无法正常使用,特别是在数据库open的情况下,因为出现这些bootstrap$中的部分index是无法通过设置event38003进行重建,从而导致数据库无法正常使用,最常见异常index 有:I_ICOL1, I_TS1, I_CDEF1, I_CDEF2, I_CDEF3, I_CDEF4, I_PROXY_DATA$, I_IND1, I_TS#, I_UNDO1, I_UNDO2, I_COBJ#, I_USER1, I_USER2, I_CON1, I_CON2, I_FILE1, I_FILE2, I_FILE#_BLOCK#, I_USER#, I_OBJ#, I_PROXY_ROLE_DATA$_1, I_PROXY_ROLE_DATA$_2, I_CCOL1, I_CCOL2, I_TAB1, I_COL1, I_COL2, I_COL3, I_OBJ1, I_OBJ2, I_OBJ3, I_OBJ4, I_OBJ5
重建的index异常报错有:ORA-00701,ORA-01410,ORA-08102,ORA-08103,ORA-01578,ORA-01499,ORA-00600等各类错误
因为处理细节复杂,无法一一描述出来.这里假设Oracle数据库一个非常核心的表OBJ$中的I_OBJ1异常,现在准备重建它,大概步骤如下:
1. 假设异常index信息(I_OBJ1)

SQL> alter index sys.i_obj1 rebuild;
alter index sys.i_obj1 rebuild
*
ERROR at line 1:
ORA-00701: object necessary for warmstarting database cannot be altered

SQL> SELECT SQL_TEXT FROM BOOTSTRAP$ WHERE SQL_TEXT LIKE '%obj%';

SQL_TEXT
--------------------------------------------------------------------------------
CREATE UNIQUE INDEX I_OBJ1 ON OBJ$(OBJ#,OWNER#,TYPE#) PCTFREE 10 INITRANS 2 MAXT
RANS 255 STORAGE (  INITIAL 64K NEXT 1024K MINEXTENTS 1 MAXEXTENTS 2147483645 PC
TINCREASE 0 OBJNO 36 EXTENTS (FILE 1 BLOCK 336))

2. 创建获取异常index所属表

SQL>  select table_name from dba_indexes where owner='SYS' AND INDEX_NAME='I_OBJ1';

TABLE_NAME
--------------------------------------------------------------------------------
OBJ$

3. 获取obj$ ddl 语句

SQL> set long 10000
SQL> set pages 1000
SQL>  SELECT DBMS_METADATA.GET_DDL('TABLE','OBJ$','SYS') FROM DUAL;

DBMS_METADATA.GET_DDL('TABLE','OBJ$','SYS')
--------------------------------------------------------------------------------

  CREATE TABLE "SYS"."OBJ$"
   (    "OBJ#" NUMBER NOT NULL ENABLE,
        "DATAOBJ#" NUMBER,
        "OWNER#" NUMBER NOT NULL ENABLE,
        "NAME" VARCHAR2(128) NOT NULL ENABLE,
        "NAMESPACE" NUMBER NOT NULL ENABLE,
        "SUBNAME" VARCHAR2(128),
        "TYPE#" NUMBER NOT NULL ENABLE,
        "CTIME" DATE NOT NULL ENABLE,
        "MTIME" DATE NOT NULL ENABLE,
        "STIME" DATE NOT NULL ENABLE,
        "STATUS" NUMBER NOT NULL ENABLE,
        "REMOTEOWNER" VARCHAR2(128),
        "LINKNAME" VARCHAR2(128),
        "FLAGS" NUMBER,
        "OID$" RAW(16),
        "SPARE1" NUMBER,
        "SPARE2" NUMBER,
        "SPARE3" NUMBER,
        "SPARE4" VARCHAR2(1000),
        "SPARE5" VARCHAR2(1000),
        "SPARE6" DATE,
        "SIGNATURE" RAW(16),
        "SPARE7" NUMBER,
        "SPARE8" NUMBER,
        "SPARE9" NUMBER
   ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
 NOCOMPRESS LOGGING
  STORAGE(INITIAL 16384 NEXT 106496 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SYSTEM"

4. 获取obj$相关index 语句

SQL>  SELECT DBMS_METADATA.GET_DDL('INDEX',INDEX_NAME,'SYS') FROM dba_indexes where owner='SYS' AND TABLE_NAME='OBJ$';

DBMS_METADATA.GET_DDL('INDEX',INDEX_NAME,'SYS')
--------------------------------------------------------------------------------

  CREATE UNIQUE INDEX "SYS"."I_OBJ5" ON "SYS"."OBJ$" ("SPARE3", "NAME", "NAMESPA
CE", "TYPE#", "OWNER#", "REMOTEOWNER", "LINKNAME", "SUBNAME", "OBJ#")
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SYSTEM"


  CREATE INDEX "SYS"."I_OBJ4" ON "SYS"."OBJ$" ("DATAOBJ#", "TYPE#", "OWNER#")
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SYSTEM"


  CREATE INDEX "SYS"."I_OBJ3" ON "SYS"."OBJ$" ("OID$")
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SYSTEM"


  CREATE UNIQUE INDEX "SYS"."I_OBJ2" ON "SYS"."OBJ$" ("OWNER#", "NAME", "NAMESPA
CE", "REMOTEOWNER", "LINKNAME", "SUBNAME", "TYPE#", "SPARE3", "OBJ#")
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 16384 NEXT 106496 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SYSTEM"


  CREATE UNIQUE INDEX "SYS"."I_OBJ1" ON "SYS"."OBJ$" ("OBJ#", "OWNER#", "TYPE#")

  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SYSTEM"

5. 创建obj$img表和相关index

SQL>   CREATE TABLE "SYS"."OBJ$IMG"
  2     (    "OBJ#" NUMBER NOT NULL ENABLE,
  3          "DATAOBJ#" NUMBER,
  4          "OWNER#" NUMBER NOT NULL ENABLE,
  5          "NAME" VARCHAR2(128) NOT NULL ENABLE,
  6          "NAMESPACE" NUMBER NOT NULL ENABLE,
  7          "SUBNAME" VARCHAR2(128),
  8          "TYPE#" NUMBER NOT NULL ENABLE,
  9          "CTIME" DATE NOT NULL ENABLE,
 10          "MTIME" DATE NOT NULL ENABLE,
 11          "STIME" DATE NOT NULL ENABLE,
 12          "STATUS" NUMBER NOT NULL ENABLE,
 13          "REMOTEOWNER" VARCHAR2(128),
 14          "LINKNAME" VARCHAR2(128),
 15          "FLAGS" NUMBER,
 16          "OID$" RAW(16),
 17          "SPARE1" NUMBER,
 18          "SPARE2" NUMBER,
 19          "SPARE3" NUMBER,
 20          "SPARE4" VARCHAR2(1000),
 21          "SPARE5" VARCHAR2(1000),
 22          "SPARE6" DATE,
 23          "SIGNATURE" RAW(16),
 24          "SPARE7" NUMBER,
 25          "SPARE8" NUMBER,
 26          "SPARE9" NUMBER
 27     ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
 28   NOCOMPRESS LOGGING
 29    STORAGE(INITIAL 16384 NEXT 106496 MINEXTENTS 1 MAXEXTENTS 2147483645
 30    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
 31    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
 32    TABLESPACE "SYSTEM"
 33  ;

Table created.

SQL> 
SQL>   CREATE UNIQUE INDEX "SYS"."I_OBJ_5IMG" ON "SYS"."OBJ$IMG" ("SPARE3", "NAME", "NAMESPACE", "TYPE#", "OWNER#", "REMOTEOWNER", "LINKNAME", "SUBNAME", "OBJ#")
  2    PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  3    STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  4    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  5    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  6    TABLESPACE "SYSTEM";

Index created.

SQL>   CREATE INDEX "SYS"."I_OBJ4IMG" ON "SYS"."OBJ$IMG" ("DATAOBJ#", "TYPE#", "OWNER#")
  2    PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  3    STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  4    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  5    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  6    TABLESPACE "SYSTEM";   

Index created.

SQL>   CREATE INDEX "SYS"."I_OBJ3IMG" ON "SYS"."OBJ$IMG" ("OID$")
  2    PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  3    STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  4    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  5    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  6    TABLESPACE "SYSTEM";

Index created.

SQL>   CREATE UNIQUE INDEX "SYS"."I_OBJ2IMG" ON "SYS"."OBJ$IMG" ("OWNER#", "NAME", "NAMESPACE", "REMOTEOWNER", "LINKNAME", "SUBNAME", "TYPE#", "SPARE3", "OBJ#")
  2    PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  3    STORAGE(INITIAL 16384 NEXT 106496 MINEXTENTS 1 MAXEXTENTS 2147483645
  4    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  5    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  6    TABLESPACE "SYSTEM";

Index created.

SQL>   CREATE UNIQUE INDEX "SYS"."I_OBJ1IMG" ON "SYS"."OBJ$IMG" ("OBJ#", "OWNER#", "TYPE#")
  2    PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  3    STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  4    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  5    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  6    TABLESPACE "SYSTEM"
  7  ;

Index created.

6. 获取bootstrap$语句

SQL> SELECT DBMS_METADATA.GET_DDL('TABLE','BOOTSTRAP$','SYS') FROM DUAL;

DBMS_METADATA.GET_DDL('TABLE','BOOTSTRAP$','SYS')
--------------------------------------------------------------------------------

  CREATE TABLE "SYS"."BOOTSTRAP$"
   (    "LINE#" NUMBER NOT NULL ENABLE,
        "OBJ#" NUMBER NOT NULL ENABLE,
        "SQL_TEXT" VARCHAR2(4000) NOT NULL ENABLE
   ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
 NOCOMPRESS LOGGING
  STORAGE(INITIAL 57344 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SYSTEM"

7. 创建bootstrap$img表

SQL>   CREATE TABLE "SYS"."BOOTSTRAP$IMG"
  2     (    "LINE#" NUMBER NOT NULL ENABLE,
  3          "OBJ#" NUMBER NOT NULL ENABLE,
  4          "SQL_TEXT" VARCHAR2(4000) NOT NULL ENABLE
  5     ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
  6   NOCOMPRESS LOGGING
  7    STORAGE(INITIAL 57344 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  8    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  9    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
 10    TABLESPACE "SYSTEM"
 11  /

Table created.

8.插入数据

insert into obj$img select * from obj$;
insert into bootstrap$img select * from bootstrap$;
commit;

9. 删除bootstrap$img对象名

delete from bootstrap$img where obj# in 
 (select obj# from obj$ 
  where name in ('OBJ$',  'I_OBJ1',  'I_OBJ2', 'I_OBJ3', 'I_OBJ4', 'I_OBJ5',
                 'BOOTSTRAP$'));
commit;

10. 插入新创建对象

insert into bootstrap$img select * from bootstrap$tmpstr;
commit;

11. 关闭数据库

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.

12. bbed修改相关block值

[oracle@oel6 ~]$ bbed 
Password: 

BBED: Release 2.0.0.0.0 - Limited Production on Thu Aug 7 04:54:50 2014

Copyright (c) 1982, 2013, Oracle and/or its affiliates.  All rights reserved.

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

BBED> set filename '/u01/app/oracle/oradata/XIFENFEI/system01.dbf'
        FILENAME        /u01/app/oracle/oradata/XIFENFEI/system01.dbf

BBED> set blocksize 8192
        BLOCKSIZE       8192

BBED> set block 1
        BLOCK#          1

BBED> set mode edit
        MODE            Edit

BBED> set count 32
        COUNT           32

BBED> m /x e81d
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/app/oracle/oradata/XIFENFEI/system01.dbf (0)
 Block: 1                Offsets:   196 to  227           Dba:0x00000000
------------------------------------------------------------------------
 e81d4000 12000000 00000000 41bad632 15bad632 01000000 00000000 00000000 

 <32 bytes per line>

BBED> m /x 5200 offset +2
 File: /u01/app/oracle/oradata/XIFENFEI/system01.dbf (0)
 Block: 1                Offsets:   198 to  229           Dba:0x00000000
------------------------------------------------------------------------
 52001200 00000000 000041ba d63215ba d6320100 00000000 00000000 00000000 

 <32 bytes per line>

BBED> d offset 96
 File: /u01/app/oracle/oradata/XIFENFEI/system01.dbf (0)
 Block: 1                Offsets:   196 to  227           Dba:0x00000000
------------------------------------------------------------------------
 e81d5200 12000000 00000000 41bad632 15bad632 01000000 00000000 00000000 

 <32 bytes per line>

BBED> sum apply
Check value for File 0, Block 1:
current = 0x5fbf, required = 0x5fbf

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/app/oracle/oradata/XIFENFEI/system01.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> exit

13. 启动数据库

SQL> startup
ORACLE instance started.

Total System Global Area  663945216 bytes
Fixed Size                  2291808 bytes
Variable Size             369100704 bytes
Database Buffers          289406976 bytes
Redo Buffers                3145728 bytes
Database mounted.
Database opened.

14. 验证I_OBJ1 index重建情况

SQL> SELECT OBJECT_ID,DATA_OBJECT_ID,CREATED FROM DBA_OBJECTS WHERE OBJECT_NAME='I_OBJ1';

 OBJECT_ID DATA_OBJECT_ID CREATED
---------- -------------- ---------
     77120          77120 06-AUG-14

SQL> !date  
Thu Aug  6 05:29:25 CST 2014

SQL> SELECT HEADER_FILE,HEADER_BLOCK FROM DBA_SEGMENTS WHERE SEGMENT_NAME='I_OBJ1';

HEADER_FILE HEADER_BLOCK
----------- ------------
          1        77296

SQL> SELECT SQL_TEXT FROM BOOTSTRAP$ WHERE SQL_TEXT LIKE '%obj%';

SQL_TEXT
-----------------------------------------------------------------------------------------------------------------------------------------------
create unique index i_obj1 on obj$(obj#, owner#, type#) PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE (  INITIAL 65536 NEXT 1048576 MINEXTENTS 1 M
AXEXTENTS 2147483645 PCTINCREASE 0 OBJNO 77120 EXTENTS (FILE 1 BLOCK 77296))

create unique index i_obj2 on obj$(owner#, name, namespace,remoteowner, linkname, subname, type#, spare3, obj#) PCTFREE 10 INITRANS 2 MAXTRANS
255 STORAGE (  INITIAL 16384 NEXT 106496 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 OBJNO 77119 EXTENTS (FILE 1 BLOCK 77288))

create index i_obj3 on obj$(oid$) PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE (  INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 P
CTINCREASE 0 OBJNO 77118 EXTENTS (FILE 1 BLOCK 77280))

create index i_obj4 on obj$(dataobj#, type#, owner#) PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE (  INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXE
XTENTS 2147483645 PCTINCREASE 0 OBJNO 77117 EXTENTS (FILE 1 BLOCK 77272))

create unique index i_obj5 on obj$(spare3, name, namespace, type#, owner#, remoteowner, linkname, subname, obj#) PCTFREE 10 INITRANS 2 MAXTRANS
 255 STORAGE (  INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 OBJNO 77116 EXTENTS (FILE 1 BLOCK 77264))

不同版本对应的基表和index结构不一样(本篇blog使用的是12c做试验),但是本方法支持数据库从Oracle 7到Oracle 12c对于bootstrap$中核心index处理.
因为重建bootstrap$中的核心index是一个复杂而且风险非常大的事情,在你无法确定风险或者无法正常完成此类操作之时,如有需要请联系我
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