标签归档：bbed

分析drop col对于数据存储块做了什么

发表于 2016 年 4 月 4 日由惜分飞

oracle 的alter table drop col具体内部是对于数据存储块操作的,如果drop col之后dul之类的工具是否可以恢复,这里我通过具体测试,结合bbed,dump block等方法来说明该问题
1.创建测试表，并写入硬盘

SQL> create table xff.t_xifenfei as select object_id,owner,object_name from dba_objects;

Table created.

SQL> desc xff.t_xifenfei
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 OBJECT_ID                                          NUMBER
 OWNER                                              VARCHAR2(30)
 OBJECT_NAME                                        VARCHAR2(128)


SQL> alter system checkpoint;

System altered.

SQL> alter system checkpoint;

System altered.

2.找出来测试表一个block分析drop col对于存储的影响

SQL> select   rowid,
  2  dbms_rowid.rowid_relative_fno(rowid)rel_fno,
  3  dbms_rowid.rowid_block_number(rowid)blockno,
dbms_rowid.rowid_row_number(rowid) rowno,object_id
  4    5  from xff.t_xifenfei where rownum<5;

ROWID                 REL_FNO    BLOCKNO      ROWNO  OBJECT_ID
------------------ ---------- ---------- ---------- ----------
AAAZ9wAAEAAAJojAAA          4      39459          0         20
AAAZ9wAAEAAAJojAAB          4      39459          1         46
AAAZ9wAAEAAAJojAAC          4      39459          2         28
AAAZ9wAAEAAAJojAAD          4      39459          3         15

3. dump block，并且记录该block 1,2,和最后一条记录

SQL> oradebug setmypid
Statement processed.
SQL> alter system dump datafile 4 block 39459;

System altered.

SQL> oradebug TRACEFILE_NAME
/home/u01/diag/rdbms/orcl/orcl/trace/orcl_ora_14069.trc


block_row_dump:
tab 0, row 0, @0x1f70
tl: 16 fb: --H-FL-- lb: 0x0  cc: 3
col  0: [ 2]  c1 15
col  1: [ 3]  53 59 53
col  2: [ 5]  49 43 4f 4c 24
tab 0, row 1, @0x1f5e
tl: 18 fb: --H-FL-- lb: 0x0  cc: 3
col  0: [ 2]  c1 2f
col  1: [ 3]  53 59 53
col  2: [ 7]  49 5f 55 53 45 52 31
…………
tab 0, row 288, @0x589
tl: 22 fb: --H-FL-- lb: 0x0  cc: 3
col  0: [ 3]  c2 03 5b
col  1: [ 3]  53 59 53
col  2: [10]  49 5f 4a 4f 42 5f 4e 45 58 54

4. 使用bbed查看该block 1,2,和最后一条记录

[oracle@localhost ~]$ bbed password=blockedit blocksize=8192 filename=/usr/local/oradata/qsng/users01.dbf 

BBED: Release 2.0.0.0.0 - Limited Production on Sun Apr 3 22:25:28 2016

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

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

BBED> set block 39459
        BLOCK#          39459

BBED> map
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459                                 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[289]                              @142     

 ub1 freespace[821]                         @720     

 ub1 rowdata[6647]                          @1541    

 ub4 tailchk                                @8188    


BBED> p *kdbr[0]
rowdata[6631]
-------------
ub1 rowdata[6631]                           @8172     0x2c

BBED> x /rncc
rowdata[6631]                               @8172    
-------------
flag@8172: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8173: 0x00
cols@8174:    3

col    0[2] @8175: 20 
col    1[3] @8178: SYS
col    2[5] @8182: ICOL$


BBED> d
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459            Offsets: 8172 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 2c000302 c1150353 59530549 434f4c24 02067576 

 <32 bytes per line>

BBED> p *kdbr[1]
rowdata[6613]
-------------
ub1 rowdata[6613]                           @8154     0x2c

BBED> x /rncc
rowdata[6613]                               @8154    
-------------
flag@8154: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8155: 0x00
cols@8156:    3

col    0[2] @8157: 46 
col    1[3] @8160: SYS
col    2[7] @8164: I_USER1


BBED> d
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459            Offsets: 8154 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 2c000302 c12f0353 59530749 5f555345 52312c00 0302c115 03535953 0549434f 
 4c240206 7576 

 <32 bytes per line>

BBED> p *kdbr[288]
rowdata[0]
----------
ub1 rowdata[0]                              @1541     0x2c

BBED> x /rncc
rowdata[0]                                  @1541    
----------
flag@1541: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@1542: 0x00
cols@1543:    3

col    0[3] @1544: 290 
col    1[3] @1548: SYS
col   2[10] @1552: I_JOB_NEXT


BBED> set count 32
        COUNT           32

BBED> d
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459            Offsets: 1541 to 1572           Dba:0x00000000
------------------------------------------------------------------------
 2c000303 c2035b03 5359530a 495f4a4f 425f4e45 58542c00 0303c203 5a035359 

 <32 bytes per line>

5. 删除中间列，并且写入硬盘

SQL> ALTER TABLE XFF.T_XIFENFEI DROP COLUMN owner;

Table altered.

SQL> alter system checkpoint;

System altered.

SQL> /

System altered.

6. 查询确定相同行所在block没有发生改变

SQL> select   rowid,
  2  dbms_rowid.rowid_relative_fno(rowid)rel_fno,
  3  dbms_rowid.rowid_block_number(rowid)blockno,
dbms_rowid.rowid_row_number(rowid) rowno,object_id
  4    5  from xff.t_xifenfei where rownum<5;

ROWID                 REL_FNO    BLOCKNO      ROWNO  OBJECT_ID
------------------ ---------- ---------- ---------- ----------
AAAZ9wAAEAAAJojAAA          4      39459          0         20
AAAZ9wAAEAAAJojAAB          4      39459          1         46
AAAZ9wAAEAAAJojAAC          4      39459          2         28
AAAZ9wAAEAAAJojAAD          4      39459          3         15

7. drop col之后dump block继续分析

SQL> alter system dump datafile 4 block 39459;

System altered.

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

VALUE
--------------------------------------------------------------------------------
/home/u01/diag/rdbms/orcl/orcl/trace/orcl_ora_14784.trc

SQL> 

tab 0, row 0, @0x1f70
tl: 12 fb: --H-FL-- lb: 0x2  cc: 2
col  0: [ 2]  c1 15
col  1: [ 5]  49 43 4f 4c 24
tab 0, row 1, @0x1f5e
tl: 14 fb: --H-FL-- lb: 0x2  cc: 2
col  0: [ 2]  c1 2f
col  1: [ 7]  49 5f 55 53 45 52 31
…………
tab 0, row 288, @0x589
tl: 18 fb: --H-FL-- lb: 0x2  cc: 2
col  0: [ 3]  c2 03 5b
col  1: [10]  49 5f 4a 4f 42 5f 4e 45 58 54

8. 使用bbed查看drop col后的数据存储情况

$ bbed password=blockedit blocksize=8192 filename=/usr/local/oradata/qsng/users01.dbf 

BBED: Release 2.0.0.0.0 - Limited Production on Sun Apr 3 22:31:37 2016

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

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

BBED> set block 39459
        BLOCK#          39459

BBED> map 
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459                                 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[289]                              @142     

 ub1 freespace[821]                         @720     

 ub1 rowdata[6647]                          @1541    

 ub4 tailchk                                @8188    


BBED> p *kdbr[0]
rowdata[6631]
-------------
ub1 rowdata[6631]                           @8172     0x2c

BBED> x /rncc
rowdata[6631]                               @8172    
-------------
flag@8172: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8173: 0x02
cols@8174:    2

col    0[2] @8175: 20 
col    1[5] @8178: ICOL$


BBED> d
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459            Offsets: 8172 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 2c020202 c1150549 434f4c24 434f4c24 0106de78 

 <32 bytes per line>

BBED> p *kdbr[1]
rowdata[6613]
-------------
ub1 rowdata[6613]                           @8154     0x2c

BBED> x /rncc
rowdata[6613]                               @8154    
-------------
flag@8154: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8155: 0x02
cols@8156:    2

col    0[2] @8157: 46 
col    1[7] @8160: I_USER1


BBED> d
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459            Offsets: 8154 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 2c020202 c12f0749 5f555345 52315345 52312c02 0202c115 0549434f 4c24434f 
 4c240106 de78 

 <32 bytes per line>

BBED> p *kdbr[288]
rowdata[0]
----------
ub1 rowdata[0]                              @1541     0x2c

BBED> set count 32
        COUNT           32

BBED> x /rncc
rowdata[0]                                  @1541    
----------
flag@1541: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@1542: 0x02
cols@1543:    2

col    0[3] @1544: 290 
col   1[10] @1548: I_JOB_NEXT


BBED> d
 File: /usr/local/oradata/qsng/users01.dbf (0)
 Block: 39459            Offsets: 1541 to 1572           Dba:0x00000000
------------------------------------------------------------------------
 2c020203 c2035b0a 495f4a4f 425f4e45 58544e45 58542c02 0203c203 5a09495f 

 <32 bytes per line>

通过上述测试可以得出如下结论:
1. drop col是真的把对应列存储在block中的内容除掉,而且把后面的列的内容前移了,并且以前多于的内容(因为一行内容前移,后面就出现空闲记录不设置为空,而就是最初内容,下次如果行长度发生改变的时候使用,就和类似update把列修改短了一样)
2. drop col只是导致一行的长度变短,但是每行的偏移量未发生改变,也就是说,每行所在的偏移量没有改变,drop col之后,每行后面多了一些空闲空间
3. 根据上面分析的原理,drop col 是真的从block内部把这一列的数据使用后面列的数据覆盖了,因此从原理上而言,dul无法恢复drop col的数据(最后一列有可能可以恢复,因为他不会被覆盖),对于drop col,只能是通过备份不完全恢复,全库闪回,dg延迟应用等方法解决

发表在 Oracle | 标签为 bbed, drop col | 评论关闭

file 1 block 128 corrupted/坏块恢复—system rollback坏块修复

发表于 2016 年 3 月 17 日由惜分飞

有个数据库file 1 block 128 坏块导致数据库无法启动报错如下
file-1-block-128

该数据库版本是11.2.0.1,根据我们的经验该block是system rollback 的segment header,以下为我在正常哭查询结果

SQL> select file_id,block_id,blocks from dba_extents where segment_name='SYSTEM';

   FILE_ID   BLOCK_ID     BLOCKS
---------- ---------- ----------
         1        128          8
         1        136          8
         1        528          8
         1        536          8
         1        544          8
         1        552          8

6 rows selected.

dump file 1 block 128 结果

Dump all the blocks in range:
buffer tsn: 0 rdba: 0x00400080 (1/128)
scn: 0x0000.00000000 seq: 0xff flg: 0x04 tail: 0x00000eff
frmt: 0x02 chkval: 0x1387 type: 0x0e=KTU UNDO HEADER W/UNLIMITED EXTENTS
Hex dump of block: st=0, typ_found=1

这里可以看到block scn为0×0000.00000000，而且数据块已经被标记为坏块
dbv检查坏块结果
dbv

从这里可以看出来主要错误是由于Controlscn: 0×0004.119fe191 greater than blockscn: 0×0000.00000000,拷贝system文件到本地，使用bbed修改

bbed修复坏块

H:\temp\SYSTEM01>bbed password=blockedit filename=system01.dbf blocksize=8192

BBED: Release 2.0.0.0.0 - Limited Production on Thu Mar 17 00:23:49 2016

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.

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

BBED> show all
        FILE#           0
        BLOCK#          1
        OFFSET          0
        DBA             0x00000000 (0 0,1)
        FILENAME        system01.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> set block 129
        BLOCK#          129

BBED> map
 File: system01.dbf (0)
 Block: 129                                   Dba:0x00000000
------------------------------------------------------------
 Unlimited Undo Segment Header

 struct kcbh, 20 bytes                      @0

 struct ktech, 72 bytes                     @20

 struct ktemh, 16 bytes                     @92

 struct ktetb[6], 48 bytes                  @108

 struct ktuxc, 104 bytes                    @4148

 struct ktuxe[204], 8160 bytes              @4252

 ub4 tailchk                                @8188


BBED> p kcbh
struct kcbh, 20 bytes                       @0
   ub1 type_kcbh                            @0        0x0e
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x00400080
   ub4 bas_kcbh                             @8        0x00000000
   ub2 wrp_kcbh                             @12       0x0000
   ub1 seq_kcbh                             @14       0xff
   ub1 flg_kcbh                             @15       0x04 (KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x1387
   ub2 spare3_kcbh                          @18       0x0000

BBED> set mode edit
        MODE            Edit

BBED> d offset 8188
 File: system01.dbf (0)
 Block: 129              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 ff0e0000

 <32 bytes per line>

BBED> m /x 01 offset 8188
 File: system01.dbf (0)
 Block: 129              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 010e0000

 <32 bytes per line>

BBED> verify
DBVERIFY - Verification starting
FILE = system01.dbf
BLOCK = 128


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

BBED> sum apply
Check value for File 0, Block 129:
current = 0x1387, required = 0x1387

BBED> verify
DBVERIFY - Verification starting
FILE = system01.dbf
BLOCK = 128


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

BBED> exit


H:\temp\SYSTEM01>dbv file=SYSTEM01.DBF

DBVERIFY: Release 12.1.0.2.0 - Production on 星期四 3月 17 00:26:26 2016

Copyright (c) 1982, 2014, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - 开始验证: FILE = H:\TEMP\SYSTEM01\SYSTEM01.DBF
Controlscn: 0x0004.119fe191 greater than blockscn: 0x0000.00000000
页 128 失败, 校验代码为 14509
页 128 失败, 校验代码为 14509


DBVERIFY - 验证完成

检查的页总数: 209920
处理的页总数 (数据): 132380
失败的页总数 (数据): 0
处理的页总数 (索引): 57168
失败的页总数 (索引): 0
处理的页总数 (其他): 3112
处理的总页数 (段)  : 1
失败的总页数 (段)  : 1
空的页总数: 17260
标记为损坏的总页数: 1
流入的页总数: 0
加密的总页数        : 0
最高块 SCN            : 188826853 (5.188826853)


H:\temp\SYSTEM01>bbed password=blockedit filename=system01.dbf

BBED: Release 2.0.0.0.0 - Limited Production on Thu Mar 17 00:26:59 2016

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.

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


BBED> set blocksize 8192
        BLOCKSIZE       8192

BBED> set block 129
        BLOCK#          129

BBED> verify
DBVERIFY - Verification starting
FILE = system01.dbf
BLOCK = 128


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


BBED> map
 File: system01.dbf (0)
 Block: 129                                   Dba:0x00000000
------------------------------------------------------------
 Unlimited Undo Segment Header

 struct kcbh, 20 bytes                      @0

 struct ktech, 72 bytes                     @20

 struct ktemh, 16 bytes                     @92

 struct ktetb[6], 48 bytes                  @108

 struct ktuxc, 104 bytes                    @4148

 struct ktuxe[204], 8160 bytes              @4252

 ub4 tailchk                                @8188


BBED> p kcbh
struct kcbh, 20 bytes                       @0
   ub1 type_kcbh                            @0        0x0e
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x00400080
   ub4 bas_kcbh                             @8        0x00000000
   ub2 wrp_kcbh                             @12       0x0000
   ub1 seq_kcbh                             @14       0x01
   ub1 flg_kcbh                             @15       0x04 (KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x1387
   ub2 spare3_kcbh                          @18       0x0000


BBED> set mode edit
        MODE            Edit

BBED> m /x 0400 offset 12
 File: system01.dbf (0)
 Block: 129              Offsets:   12 to  523           Dba:0x00000000
------------------------------------------------------------------------
 04000104 87130000 00000000 00000000 00000000 00000000 06000000 2f000000
 20100000 05000000 05000000 08000000 2d024000 00000000 05000000 00000000
 00000000 00000000 00000000 00000000 06000000 00000000 00000000 00000040
 81004000 07000000 88004000 08000000 10024000 08000000 18024000 08000000
 20024000 08000000 28024000 08000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 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> p kcbh
struct kcbh, 20 bytes                       @0
   ub1 type_kcbh                            @0        0x0e
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x00400080
   ub4 bas_kcbh                             @8        0x00000000
   ub2 wrp_kcbh                             @12       0x0004
   ub1 seq_kcbh                             @14       0x01
   ub1 flg_kcbh                             @15       0x04 (KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x1387
   ub2 spare3_kcbh                          @18       0x0000

BBED> m /x 625a60d0 offset 8
 File: system01.dbf (0)
 Block: 129              Offsets:    8 to  519           Dba:0x00000000
------------------------------------------------------------------------
 625a60d0 10000104 87130000 00000000 00000000 00000000 00000000 06000000
 2f000000 20100000 05000000 05000000 08000000 2d024000 00000000 05000000
 00000000 00000000 00000000 00000000 00000000 06000000 00000000 00000000
 00000040 81004000 07000000 88004000 08000000 10024000 08000000 18024000
 08000000 20024000 08000000 28024000 08000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 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> p kcbh
struct kcbh, 20 bytes                       @0
   ub1 type_kcbh                            @0        0x0e
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x00400080
   ub4 bas_kcbh                             @8        0xd0605a62
   ub2 wrp_kcbh                             @12       0x0010
   ub1 seq_kcbh                             @14       0x01
   ub1 flg_kcbh                             @15       0x04 (KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x1387
   ub2 spare3_kcbh                          @18       0x0000

BBED> d offset 8188
 File: system01.dbf (0)
 Block: 129              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 010e0000

 <32 bytes per line>

BBED> m /x 010e625a
 File: system01.dbf (0)
 Block: 129              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 010e625a

 <32 bytes per line>

BBED> verify
DBVERIFY - Verification starting
FILE = system01.dbf
BLOCK = 128

Block 128 is corrupt
***
Corrupt block relative dba: 0x00400080 (file 0, block 128)
Bad check value found during verification
Data in bad block -
 type: 14 format: 2 rdba: 0x00400080
 last change scn: 0x0010.34605a62 seq: 0x1 flg: 0x04
 consistency value in tail: 0x5a620e01
 check value in block header: 0x1387, computed block checksum: 0x3470
 spare1: 0x0, spare2: 0x0, spare3: 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           : 0

BBED> sum apply
Check value for File 0, Block 129:
current = 0x27f7, required = 0x27f7

BBED> verify
DBVERIFY - Verification starting
FILE = system01.dbf
BLOCK = 128


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

BBED> exit


H:\temp\SYSTEM01>dbv file=SYSTEM01.DBF

DBVERIFY: Release 12.1.0.2.0 - Production on 星期四 3月 17 00:40:38 2016

Copyright (c) 1982, 2014, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - 开始验证: FILE = H:\TEMP\SYSTEM01\SYSTEM01.DBF


DBVERIFY - 验证完成

检查的页总数: 209920
处理的页总数 (数据): 132380
失败的页总数 (数据): 0
处理的页总数 (索引): 57168
失败的页总数 (索引): 0
处理的页总数 (其他): 3112
处理的总页数 (段)  : 1
失败的总页数 (段)  : 0
空的页总数: 17260
标记为损坏的总页数: 0
流入的页总数: 0
加密的总页数        : 0
最高块 SCN            : 188826853 (5.188826853)

这里发现当我们bbed验证非坏块之时,使用dbv检测依旧报坏块,可以看出来dbv的验证比bbed更加严格

发表在非常规恢复 | 标签为 bbed, blockscn, Controlscn, corrupted block, system rollback, system坏块, 坏块 | 2 条评论

12C sysaux 异常恢复—ORA-01190错误恢复

发表于 2015 年 10 月 4 日由惜分飞

有朋友请求支援，他们数据库由于file 3 大量坏块，然后直接使用rman 备份还原了file 3，但是在recover过程中发现归档丢失，而且整个库在丢失归档的scn之后，还做过resetlogs操作，导致现在整个库无法正常启动，报ORA-01190错误，希望帮忙把file 3 给online起来，整个库正常open【当然在丢失sysaux的情况下，数据库可以open起来，但是这种情况下，迁移数据比较麻烦】

SQL> startup;
ORACLE 例程已经启动。

Total System Global Area 3.1868E+10 bytes
Fixed Size                  3601144 bytes
Variable Size            2.8655E+10 bytes
Database Buffers         3154116608 bytes
Redo Buffers               54804480 bytes
数据库装载完毕。
ORA-01190: 控制文件或数据文件 3 来自最后一个 RESETLOGS 之前
ORA-01110: 数据文件 3: 'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF'

Oracle Database Recovery Check Result结果显示[脚本]
wrong+resetlogs

尝试不完全恢复并使用隐含参数打开库

Fri Oct 02 19:10:12 2015
ALTER DATABASE RECOVER  database until cancel  
Fri Oct 02 19:10:12 2015
Media Recovery Start
 Started logmerger process
Fri Oct 02 19:10:12 2015
Media Recovery failed with error 16433
Fri Oct 02 19:10:14 2015
Recovery Slave PR00 previously exited with exception 283
ORA-283 signalled during: ALTER DATABASE RECOVER  database until cancel  ...
Fri Oct 02 19:10:37 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_5176.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:10:37 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_5176.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
ALTER DATABASE RECOVER  database until cancel  
Fri Oct 02 19:11:18 2015
Media Recovery Start
 Started logmerger process
Fri Oct 02 19:11:18 2015
Media Recovery failed with error 16433
Fri Oct 02 19:11:19 2015
Recovery Slave PR00 previously exited with exception 283
ORA-283 signalled during: ALTER DATABASE RECOVER  database until cancel  ...
alter database open resetlogs
ORA-1139 signalled during: alter database open resetlogs...
alter database open
Fri Oct 02 19:11:49 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_ora_4252.trc:
ORA-01190: 控制文件或数据文件 3 来自最后一个 RESETLOGS 之前
ORA-01110: 数据文件 3: 'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF'
ORA-1190 signalled during: alter database open...
Fri Oct 02 19:15:38 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_5292.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:15:38 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_5292.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:20:39 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_2276.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:20:39 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_2276.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:25:40 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_4804.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:25:40 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_4804.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:30:41 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_876.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:30:41 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_m000_876.trc:
ORA-16433: The database or pluggable database must be opened in read/write mode.
Fri Oct 02 19:32:40 2015
Shutting down instance (abort)

数据库遭遇ORA-16433,此类方法无法打开数据库，根据经验值出现此类问题，可能需要重建控制文件，但是由于其中file 3的resetlogs scn不正确，无法包含该文件重建控制文件

Fri Oct 02 20:10:55 2015
WARNING: Default Temporary Tablespace not specified in CREATE DATABASE command
Default Temporary Tablespace will be necessary for a locally managed database in future release
Fri Oct 02 20:10:55 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_ora_5004.trc:
ORA-01189: ????????????? RESETLOGS
ORA-01110: ???? 3: 'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF'
ORA-1503 signalled during:  CREATE CONTROLFILE REUSE DATABASE "orcl" RESETLOGS FORCE LOGGING ARCHIVELOG
     MAXLOGFILES 16
     MAXLOGMEMBERS 3
     MAXDATAFILES 100
     MAXINSTANCES 8
     MAXLOGHISTORY 2921
 LOGFILE
 GROUP 3 'E:\APP\ORAADM\ORADATA\ORCL\REDO03.LOG' size 50M,
 GROUP 2 'E:\APP\ORAADM\ORADATA\ORCL\REDO02.LOG'  size 50M,
 GROUP 1 'E:\APP\ORAADM\ORADATA\ORCL\REDO01.LOG'  size 50M
 DATAFILE
'E:\APP\ORAADM\ORADATA\ORCL\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBSEED\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBSEED\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\UNDOTBS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\USERS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SAMPLE_SCHEMA_USERS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\EXAMPLE01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\NMSA_BACKUP01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE1.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE02.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE03.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE04.DBF'
 CHARACTER SET AL32UTF8
 ...

除掉file 3 继续重建控制文件

Fri Oct 02 20:33:11 2015
Successful mount of redo thread 1, with mount id 1419796614
Completed:  CREATE CONTROLFILE REUSE DATABASE "orcl" RESETLOGS FORCE LOGGING ARCHIVELOG
     MAXLOGFILES 16
     MAXLOGMEMBERS 3
     MAXDATAFILES 100
     MAXINSTANCES 8
     MAXLOGHISTORY 2921
 LOGFILE
 GROUP 3 'E:\APP\ORAADM\ORADATA\ORCL\REDO03.LOG' size 50M,
 GROUP 2 'E:\APP\ORAADM\ORADATA\ORCL\REDO02.LOG'  size 50M,
 GROUP 1 'E:\APP\ORAADM\ORADATA\ORCL\REDO01.LOG'  size 50M
 DATAFILE
'E:\APP\ORAADM\ORADATA\ORCL\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBSEED\SYSTEM01.DBF',
--'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBSEED\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\UNDOTBS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\USERS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SAMPLE_SCHEMA_USERS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\EXAMPLE01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\NMSA_BACKUP01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE1.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE02.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE03.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE04.DBF'
 CHARACTER SET AL32UTF8

继续恢复数据库

ALTER DATABASE OPEN
Fri Oct 02 20:34:57 2015
…………
Archived Log entry 3 added for thread 1 sequence 8 ID 0x54a083a3 dest 1:
Fri Oct 02 20:35:16 2015
Tablespace 'SYSAUX' #1 found in data dictionary,
but not in the controlfile. Adding to controlfile.
Tablespace 'TEMP' #3 found in data dictionary,
but not in the controlfile. Adding to controlfile.
File #3 found in data dictionary but not in controlfile.
Creating OFFLINE file 'MISSING00003' in the controlfile.
Corrected file 15 plugged in read-only status in control file
Corrected file 16 plugged in read-only status in control file
Corrected file 17 plugged in read-only status in control file
Corrected file 18 plugged in read-only status in control file
Corrected file 19 plugged in read-only status in control file
Dictionary check complete
Verifying file header compatibility for 11g tablespace encryption..
Verifying 11g file header compatibility for tablespace encryption completed
Fri Oct 02 20:35:19 2015
SMON: enabling tx recovery
Fri Oct 02 20:35:19 2015
*********************************************************************
WARNING: The following temporary tablespaces in container(CDB$ROOT)
         contain no files.
Starting background process SMCO
Fri Oct 02 20:35:19 2015
SMCO started with pid=45, OS id=1500 
         This condition can occur when a backup controlfile has
         been restored.  It may be necessary to add files to these
         tablespaces.  That can be done using the SQL statement:
 
         ALTER TABLESPACE <tablespace_name> ADD TEMPFILE
 
         Alternatively, if these temporary tablespaces are no longer
         needed, then they can be dropped.
           Empty temporary tablespace: TEMP
*********************************************************************
Database Characterset is AL32UTF8
No Resource Manager plan active
Fri Oct 02 20:35:21 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_ora_2220.trc:
ORA-00376: 此时无法读取文件 3
ORA-01111: 数据文件 3 名称未知 - 请重命名以更正文件
ORA-01110: 数据文件 3: 'C:\APP\ORAADM\PRODUCT\12.1.0\DBHOME_1\DATABASE\MISSING00003'
Fri Oct 02 20:35:21 2015
Errors in file E:\APP\ORAADM\diag\rdbms\orcl\oaorcl\trace\oaorcl_ora_2220.trc:
ORA-00376: 此时无法读取文件 3
ORA-01111: 数据文件 3 名称未知 - 请重命名以更正文件
ORA-01110: 数据文件 3: 'C:\APP\ORAADM\PRODUCT\12.1.0\DBHOME_1\DATABASE\MISSING00003'
Error 376 happened during db open, shutting down database
USER (ospid: 2220): terminating the instance due to error 376
Fri Oct 02 20:35:26 2015
Instance terminated by USER, pid = 2220
ORA-1092 signalled during: ALTER DATABASE OPEN...
opiodr aborting process unknown ospid (2220) as a result of ORA-1092

此时由于file 3 未包含在控制文件中，但是存在数据字典中，因此在数据库open的时候出现了默认文件名MISSING0003，尝试重命名改文件指定为存在的file 3,并且尝试恢复

SQL> startup mount;
ORACLE 例程已经启动。

Total System Global Area 3.1868E+10 bytes
Fixed Size                  3601144 bytes
Variable Size            2.8655E+10 bytes
Database Buffers         3154116608 bytes
Redo Buffers               54804480 bytes
数据库装载完毕。
SQL> alter database datafile 3 offline;

数据库已更改。

SQL> alter database rename file 'C:\APP\ORAADM\PRODUCT\12.1.0\DBHOME_1\DATABASE\
MISSING00003' to 'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF';

数据库已更改。

SQL> recover database until cancel;
ORA-00279: 更改 617412726 (在 10/02/2015 20:35:06 生成) 对于线程 1 是必需的
ORA-00289: 建议:
E:\APP\ORAADM\FAST_RECOVERY_AREA\ORCL\ARCHIVELOG\2015_10_02\O1_MF_1_9_%U_.ARC
ORA-00280: 更改 617412726 (用于线程 1) 在序列 #9 中


指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
E:\APP\ORAADM\ORADATA\ORCL\REDO01.LOG
ORA-00310: archived log contains sequence 7; sequence 9 required
ORA-00334: archived log: 'E:\APP\ORAADM\ORADATA\ORCL\REDO01.LOG'


ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: 'E:\APP\ORAADM\ORADATA\ORCL\SYSTEM01.DBF'


SQL> recover database until cancel;
ORA-00279: 更改 617412726 (在 10/02/2015 20:35:06 生成) 对于线程 1 是必需的
ORA-00289: 建议:
E:\APP\ORAADM\FAST_RECOVERY_AREA\ORCL\ARCHIVELOG\2015_10_02\O1_MF_1_9_%U_.ARC
ORA-00280: 更改 617412726 (用于线程 1) 在序列 #9 中


指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
E:\APP\ORAADM\ORADATA\ORCL\REDO03.LOG
已应用的日志。
完成介质恢复。
SQL> alter database datafile 3 online;

数据库已更改。

SQL> alter database open resetlogs;
alter database open resetlogs
*
第 1 行出现错误:
ORA-01122: 数据库文件 3 验证失败
ORA-01110: 数据文件 3: 'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF'
ORA-01202: 此文件的原型错误 - 创建时间错误

这里比较明显ORA-01202，由于创建控制文件之时没有file 3信息，因此导致控制文件中关于file 3的信息和该文件头的创建时间不一致（此处之时显示了时间不一致，如果通过bbed修改时间，后续可能还有很多东西不一致，因此通过bbed 一个个修改一个个尝试，理论可行，但实际可操作性不好）,因此尝试直接使用bbed修改file 3文件头（由于是win环境，操作稍微麻烦点），把resetlogs信息修改和其他的一样

BBED> m /x 3c6b2b35
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  112 to  143           Dba:0x00c00002
------------------------------------------------------------------------
 3c6b2b35 386b2200 00000000 00000000 00000000 00000000 00004000 bb460000 

 <32 bytes per line>

BBED> set offset 116
        OFFSET          116

BBED> m /x 3137ca24
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  116 to  147           Dba:0x00c00002
------------------------------------------------------------------------
 3137ca24 00000000 00000000 00000000 00000000 00004000 bb460000 7dc12b35 

 <32 bytes per line>

BBED> m /x b9f8
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  484 to  515           Dba:0x00c00002
------------------------------------------------------------------------
 b9f8a424 00000000 e65e2435 01000000 d3410000 b89b0000 10000900 02000000 

 <32 bytes per line>

BBED> set offset +2
        OFFSET          486

BBED> m /x cc24
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  486 to  517           Dba:0x00c00002
------------------------------------------------------------------------
 cc240000 0000e65e 24350100 0000d341 0000b89b 00001000 09000200 00000000 

 <32 bytes per line>

BBED> m /x 87df offset 492
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  492 to  523           Dba:0x00c00002
------------------------------------------------------------------------
 87df2435 01000000 d3410000 b89b0000 10000900 02000000 00000000 00000000 

 <32 bytes per line>

BBED> 
BBED> m /x 2b35 offset +2
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  494 to  525           Dba:0x00c00002
------------------------------------------------------------------------
 2b350100 0000d341 0000b89b 00001000 09000200 00000000 00000000 00000000 

 <32 bytes per line>

BBED> d offset 140
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  140 to  171           Dba:0x00c00002
------------------------------------------------------------------------
 bb460000 7dc12b35 ba460000 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> m /x 4248
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  140 to  171           Dba:0x00c00002
------------------------------------------------------------------------
 42480000 7dc12b35 ba460000 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> d offset 148
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  148 to  179           Dba:0x00c00002
------------------------------------------------------------------------
 ba460000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> m /x 4148
 File: SYSAUX01.dbf (3)
 Block: 2                Offsets:  148 to  179           Dba:0x00c00002
------------------------------------------------------------------------
 41480000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> sum apply
Check value for File 3, Block 2:
current = 0xd0c8, required = 0xd0c8

BBED> verify
DBVERIFY - Verification starting
FILE = SYSAUX01.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

修改完file 3的文件头之后，再次重建控制文件,此次包含file 3

Fri Oct 02 21:19:58 2015
Successful mount of redo thread 1, with mount id 1419797885
Completed:  CREATE CONTROLFILE REUSE DATABASE "orcl" NORESETLOGS FORCE LOGGING ARCHIVELOG
     MAXLOGFILES 16
     MAXLOGMEMBERS 3
     MAXDATAFILES 100
     MAXINSTANCES 8
     MAXLOGHISTORY 2921
 LOGFILE
 GROUP 3 'E:\APP\ORAADM\ORADATA\ORCL\REDO03.LOG' size 50M,
 GROUP 2 'E:\APP\ORAADM\ORADATA\ORCL\REDO02.LOG'  size 50M,
 GROUP 1 'E:\APP\ORAADM\ORADATA\ORCL\REDO01.LOG'  size 50M
 DATAFILE
'E:\APP\ORAADM\ORADATA\ORCL\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBSEED\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBSEED\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\UNDOTBS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\USERS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SYSTEM01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SYSAUX01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\SAMPLE_SCHEMA_USERS01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\PDBORCL\EXAMPLE01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\NMSA_BACKUP01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE1.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE01.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE02.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE03.DBF',
'E:\APP\ORAADM\ORADATA\ORCL\V3XSPACE04.DBF'
 CHARACTER SET AL32UTF8

继续恢复数据库,数据库正常open，而且file 3 已经正常online，数据库可以直接导出来，至此恢复大体完成

发表在非常规恢复 | 标签为 bbed, ORA-01110, ORA-01122, ORA-01190, ORA-01202, sysaux恢复 | 评论关闭

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分析drop col对于数据存储块做了什么

file 1 block 128 corrupted/坏块恢复—system rollback坏块修复

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