• Oracle 如何提交手册Cluster Table事务

    环境遇到ora-00600 4000错误,该目的是参与cluster table,什么我这里有以下简单的模拟。以供参考!

    ++++创建一个测试表

    ?

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    SQL> conn roger/roger
    Connected.
    SQL> create cluster t_cluster(id number(2)) ;
    Cluster created.
    SQL> create table t_0610
    2  (id number(2) primary key,
    3  name varchar2(13))
    4  cluster t_cluster(id);
    Table created.
    SQL>  create index t_cluster_idx on cluster t_cluster;
    Index created.
    SQL>
    SQL> insert into t_0610 values(1,'baidu');
    1 row created.
    SQL> insert into t_0610 values(2,'google');
    1 row created.
    SQL> insert into t_0610 values(8,'roger');
    1 row created.
    SQL> commit;
    Commit complete.
    SQL> select * from t_0610;
    ID NAME
    ---------- -------------
    1 baidu
    2 google
    8 roger
    SQL> select dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) blk#
    2  from t_0610;
    FILE#       BLK#
    ---------- ----------
    6        172
    6        173
    6        174
    SQL> oradebug setmypid
    ORA-01031: insufficient privileges
    SQL> conn /as sysdba
    Connected.
    SQL> oradebug setmypid
    Statement processed.
    SQL> alter system flush buffer_cache;
    System altered.
    SQL> alter system dump datafile 6 block 172;
    System altered.
    SQL> oradebug close_trace
    Statement processed.
    SQL> oradebug tracefile_name
    /oracle/diag/rdbms/roger/roger/trace/roger_ora_16777.trc

    ++++blockdump内容

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    Dump of buffer cache at level 4 for tsn=7 rdba=25165996
    BH (0x71bf2f28) file#: 6 rdba: 0x018000ac (6/172) class: 1 ba: 0x71ad8000
    set: 3 pool: 3 bsz: 8192 bsi: 0 sflg: 2 pwc: 0,15
    dbwrid: 0 obj: 77519 objn: 77520 tsn: 7 afn: 6 hint: f
    hash: [0x8abfa738,0x8abfa738] lru: [0x74ff33a0,0x7abf47d0]
    lru-flags: on_auxiliary_list
    ckptq: [NULL] fileq: [NULL] objq: [NULL] objaq: [NULL]
    st: FREE md: NULL fpin: 'ktspbwh2: ktspfmdb' tch: 0 lfb: 33
    flags:
    Block dump from disk:
    buffer tsn: 7 rdba: 0x018000ac (6/172)
    scn: 0x0000.00b941a6 seq: 0x01 flg: 0x06 tail: 0x41a60601
    frmt: 0x02 chkval: 0xcb52 type: 0x06=trans data
    Hex dump of block: st=0, typ_found=1
    Dump of memory from 0x00007FADB771EA00 to 0x00007FADB7720A00
    7FADB771EA00 0000A206 018000AC 00B941A6 06010000  [.........A......]
    7FADB771EA10 0000CB52 00000001 00012ECF 00B94199  [R............A..]
    7FADB771EA20 00000000 00320002 018000A8 00080006  [......2.........]
    7FADB771EA30 00000515 00C00562 002E014E 00008000  [....b...N.......]
    7FADB771EA40 00B94198 001D0007 000004C9 00C03C08  [.A...........<..]
    7FADB771EA50 0032019D 00002001 00B941A6 00000000  [..2.. ...A......]
    7FADB771EA60 00000000 00020201 001AFFFF 1F5E1F78  [............x.^.]
    7FADB771EA70 00001F5E 00010001 1F820001 00001F78  [^...........x...]
    7FADB771EA80 00000000 00000000 00000000 00000000  [................]
    Repeat 500 times
    7FADB77209D0 00000000 00000000 00000000 0001026C  [............l...]
    7FADB77209E0 69616205 00AC7564 01000101 00800100  [.baidu..........]
    7FADB77209F0 010000AC 00AC0080 02C10200 41A60601  [...............A]
    Block header dump:  0x018000ac
    Object id on Block? Y
    seg/obj: 0x12ecf  csc: 0x00.b94199  itc: 2  flg: E  typ: 1 - DATA
    brn: 0  bdba: 0x18000a8 ver: 0x01 opc: 0
    inc: 0  exflg: 0
    Itl           Xid                  Uba         Flag  Lck        Scn/Fsc
    0x01   0x0006.008.00000515  0x00c00562.014e.2e  C---    0  scn 0x0000.00b94198
    0x02   0x0007.01d.000004c9  0x00c03c08.019d.32  --U-    1  fsc 0x0000.00b941a6
    bdba: 0x018000ac
    data_block_dump,data header at 0x7fadb771ea64
    ===============
    tsiz: 0x1f98
    hsiz: 0x1a
    pbl: 0x7fadb771ea64
    76543210
    flag=-------K
    ntab=2                ---- > 大于2，说明这是一个cluster table
    nrow=2
    frre=-1
    fsbo=0x1a
    fseo=0x1f78
    avsp=0x1f5e
    tosp=0x1f5e
    0xe:pti[0]      nrow=1  offs=0
    0x12:pti[1]     nrow=1  offs=1
    0x16:pri[0]     offs=0x1f82
    0x18:pri[1]     offs=0x1f78
    block_row_dump:
    tab 0, row 0, @0x1f82
    tl: 22 fb: K-H-FL-- lb: 0x0  cc: 1
    curc: 1 comc: 1 pk: 0x018000ac.0 nk: 0x018000ac.0
    col  0: [ 2]  c1 02
    tab 1, row 0, @0x1f78
    tl: 10 fb: -CH-FL-- lb: 0x2  cc: 1 cki: 0
    col  0: [ 5]  62 61 69 64 75
    end_of_block_dump
    End dump data blocks tsn: 7 file#: 6 minblk 172 maxblk 172

    大家能够看到。这跟普通的data block的dump内容是有所区别的。由于这里涉及到cluster table。

    以下来模拟下手工提交cluster table的事务。

    +++++模拟事务不提交

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    SQL> alter system checkpoint;
    System altered.
    SQL> alter system flush buffer_cache;
    System altered.
    SQL> show user
    USER is "SYS"
    SQL> conn roger/roger
    Connected.
    SQL> delete from t_0610 where id=8;            ++++++不提交
    1 row deleted.
    SQL> alter system flush buffer_cache;
    System altered.
    SQL> select xidusn,xidslot,xidsqn,ubablk,ubafil,ubarec from v$transaction;
    XIDUSN    XIDSLOT     XIDSQN     UBABLK     UBAFIL     UBAREC
    ---------- ---------- ---------- ---------- ---------- ----------
    3         17       1212       1066          3         20
    SQL>

    这里我们能够看到对于这个未提交的事务XID为：3.17.1212  前面我们已经知道
    測试表中的数据分布在3个block中，这里我模拟的情况是删除第3条数据。且不提交。通过bbed来实现手工
    提交这个未提交事务，注意：第3条数据是在第3个block中，即174 block。

    +++++首先改动表的itl等信息

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    BBED> set file 6 block 174
    FILE#           6
    BLOCK#          174
    BBED> map
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174                                   Dba:0x018000ae
    ------------------------------------------------------------
    KTB Data Block (Table/Cluster)
    struct kcbh, 20 bytes                      @0
    struct ktbbh, 72 bytes                     @20
    struct kdbh, 14 bytes                      @100
    struct kdbt[2], 8 bytes                    @114
    sb2 kdbr[2]                                @122
    ub1 freespace[8030]                        @126
    ub1 rowdata[32]                            @8156
    ub4 tailchk                                @8188
    BBED> p kdbr
    sb2 kdbr[0]                                 @122      8066
    sb2 kdbr[1]                                 @124      8056
    BBED> p ktbbh
    struct ktbbh, 72 bytes                      @20
    ub1 ktbbhtyp                             @20       0x01 (KDDBTDATA)
    union ktbbhsid, 4 bytes                  @24
    ub4 ktbbhsg1                          @24       0x00012ecf
    ub4 ktbbhod1                          @24       0x00012ecf
    struct ktbbhcsc, 8 bytes                 @28
    ub4 kscnbas                           @28       0x00b94309
    ub2 kscnwrp                           @32       0x0000
    sb2 ktbbhict                             @36       2
    ub1 ktbbhflg                             @38       0x32 (NONE)
    ub1 ktbbhfsl                             @39       0x00
    ub4 ktbbhfnx                             @40       0x018000a8
    struct ktbbhitl[0], 24 bytes             @44
    struct ktbitxid, 8 bytes              @44
    ub2 kxidusn                        @44       0x0009
    ub2 kxidslt                        @46       0x0002
    ub4 kxidsqn                        @48       0x0000044c
    struct ktbituba, 8 bytes              @52
    ub4 kubadba                        @52       0x00c000f9
    ub2 kubaseq                        @56       0x014a
    ub1 kubarec                        @58       0x1d
    ub2 ktbitflg                          @60       0x8000 (KTBFCOM)
    union _ktbitun, 2 bytes               @62
    sb2 _ktbitfsc                      @62       0
    ub2 _ktbitwrp                      @62       0x0000
    ub4 ktbitbas                          @64       0x00b941a4
    struct ktbbhitl[1], 24 bytes             @68
    struct ktbitxid, 8 bytes              @68
    ub2 kxidusn                        @68       0x0003
    ub2 kxidslt                        @70       0x0011
    ub4 kxidsqn                        @72       0x000004bc
    struct ktbituba, 8 bytes              @76
    ub4 kubadba                        @76       0x00c0042a
    ub2 kubaseq                        @80       0x0185
    ub1 kubarec                        @82       0x13
    ub2 ktbitflg                          @84       0x0001 (NONE)
    union _ktbitun, 2 bytes               @86
    sb2 _ktbitfsc                      @86       6
    ub2 _ktbitwrp                      @86       0x0006
    ub4 ktbitbas                          @88       0x00000000
    BBED> modify /x 0180
    Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174              Offsets:   84 to   87           Dba:0x018000ae
    ------------------------------------------------------------------------
    01800600
    <32 bytes per line>
    BBED> modify /x 00 offset 86
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174              Offsets:   86 to   87           Dba:0x018000ae
    ------------------------------------------------------------------------
    0000
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 174:
    current = 0x055c, required = 0x055c
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 174
    Block Checking: DBA = 25165998, Block Type = KTB-managed data block
    data header at 0x7f88d49c1264
    kdbchk: row locked by non-existent transaction
    table=1   slot=0
    lockid=2   ktbbhitc=2
    Block 174 failed with check code 6101
    BBED> p *kdbr[1]
    rowdata[0]
    ----------
    ub1 rowdata[0]                              @8156     0x7c
    BBED> x /rnnnnccccccnnnnnnnnnnn
    rowdata[0]                                  @8156
    ----------
    flag@8156: 0x7c (KDRHFL, KDRHFF, KDRHFD, KDRHFH, KDRHFC)
    lock@8157: 0x02
    cols@8158:    0
    BBED> modify /x 6c offset 8156
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174              Offsets: 8156 to 8159           Dba:0x018000ae
    ------------------------------------------------------------------------
    6c020100
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 174:
    current = 0x054c, required = 0x054c
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 174
    Block Checking: DBA = 25165998, Block Type = KTB-managed data block
    data header at 0x1112864
    kdbchk: row locked by non-existent transaction
    table=1   slot=0
    lockid=2   ktbbhitc=2
    Block 174 failed with check code 6101
    DBVERIFY - Verification complete
    Total Blocks Examined         : 1
    Total Blocks Processed (Data) : 1
    Total Blocks Failing   (Data) : 1
    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> p kdbh
    struct kdbh, 14 bytes                       @100
    ub1 kdbhflag                             @100      0x01 (KDBHFFK)
    sb1 kdbhntab                             @101      2
    sb2 kdbhnrow                             @102      2
    sb2 kdbhfrre                             @104     -1
    sb2 kdbhfsbo                             @106      26
    sb2 kdbhfseo                             @108      8056
    sb2 kdbhavsp                             @110      8030
    sb2 kdbhtosp                             @112      8040
    BBED> d /v offset 102 count 4
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174     Offsets:  102 to  105  Dba:0x018000ae
    -------------------------------------------------------
    0200ffff                            l ....
    <16 bytes per line>
    BBED> modify /x 01 offset 102
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174              Offsets:  102 to  105           Dba:0x018000ae
    ------------------------------------------------------------------------
    0100ffff
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 174:
    current = 0x054f, required = 0x054f
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 174
    Block Checking: DBA = 25165998, Block Type = KTB-managed data block
    data header at 0x1112864
    kdbchk: fsbo(26) wrong, (hsz 24)
    Block 174 failed with check code 6129
    DBVERIFY - Verification complete
    Total Blocks Examined         : 1
    Total Blocks Processed (Data) : 1
    Total Blocks Failing   (Data) : 1
    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> d /v offset 106
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174     Offsets:  106 to  109  Dba:0x018000ae
    -------------------------------------------------------
    1a00781f                            l ..x.
    <16 bytes per line>
    BBED> modify /x 18 offset 106
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174              Offsets:  106 to  109           Dba:0x018000ae
    ------------------------------------------------------------------------
    1800781f
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 174:
    current = 0x054d, required = 0x054d
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 174
    Block Checking: DBA = 25165998, Block Type = KTB-managed data block
    data header at 0x1112864
    kdbchk: row count in table index incorrect
    Block 174 failed with check code 6125
    DBVERIFY - Verification complete
    Total Blocks Examined         : 1
    Total Blocks Processed (Data) : 1
    Total Blocks Failing   (Data) : 1
    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> p kdbt
    struct kdbt[0], 4 bytes                     @114
    sb2 kdbtoffs                             @114      0
    sb2 kdbtnrow                             @116      1
    struct kdbt[1], 4 bytes                     @118
    sb2 kdbtoffs                             @118      1
    sb2 kdbtnrow                             @120      1
    BBED> p kdbt[1]
    struct kdbt[1], 4 bytes                     @118
    sb2 kdbtoffs                             @118      1
    sb2 kdbtnrow                             @120      1
    BBED> d /v offset 118 count 4
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174     Offsets:  118 to  121  Dba:0x018000ae
    -------------------------------------------------------
    01000100                            l ....
    <16 bytes per line>
    BBED> modify /x 000000 offset 118
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 174              Offsets:  118 to  121           Dba:0x018000ae
    ------------------------------------------------------------------------
    00000000
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 174:
    current = 0x054d, required = 0x054d
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 174
    Block Checking: DBA = 25165998, Block Type = KTB-managed data block
    data header at 0x1112864
    kdbchk: table index offset incorrect
    tab 1
    Block 174 failed with check code 6124
    DBVERIFY - Verification complete
    Total Blocks Examined         : 1
    Total Blocks Processed (Data) : 1
    Total Blocks Failing   (Data) : 1
    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

    我们能够看到，不管怎么改动，这个block通过bbed进行检測都报错。这里不是由于改动的不正确,而是由于
    还须要改动cluster 上的Index信息。通过treedump 我们能够确认index block为file 6 block 187.

    +++++ dump Index block

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    SQL> oradebug setmypid
    Statement processed.
    SQL> alter system dump datafile 6 block 187;
    System altered.
    SQL> oradebug close_trace
    Statement processed.
    SQL> oradebug tracefile_name
    /oracle/diag/rdbms/roger/roger/trace/roger_ora_17394.trc
    SQL>

    +++++ dump 内容例如以下

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    Block header dump:  0x018000bb
    Object id on Block? Y
    seg/obj: 0x12ed2  csc: 0x00.b941a3  itc: 2  flg: E  typ: 2 - INDEX
    brn: 0  bdba: 0x18000b8 ver: 0x01 opc: 0
    inc: 0  exflg: 0
    Itl           Xid                  Uba         Flag  Lck        Scn/Fsc
    0x01   0x0000.000.00000000  0x00000000.0000.00  ----    0  fsc 0x0000.00000000
    0x02   0x0009.002.0000044c  0x00c000f9.014a.1e  --U-    1  fsc 0x0000.00b941a4
    Leaf block dump
    ===============
    header address 140553058142820=0x7fd50f1a4a64
    kdxcolev 0
    KDXCOLEV Flags = - - -
    kdxcolok 0
    kdxcoopc 0x80: opcode=0: iot flags=--- is converted=Y
    kdxconco 1
    kdxcosdc 0
    kdxconro 3
    kdxcofbo 42=0x2a
    kdxcofeo 7993=0x1f39
    kdxcoavs 7951
    kdxlespl 0
    kdxlende 0
    kdxlenxt 0=0x0
    kdxleprv 0=0x0
    kdxledsz 8
    kdxlebksz 8032
    row#0[8019] flag: ------, lock: 0, len=13, data:(8):  01 80 00 ac 00 00 01 00
    col 0; len 2; (2):  c1 02
    row#1[8006] flag: ------, lock: 0, len=13, data:(8):  01 80 00 ad 00 00 01 00
    col 0; len 2; (2):  c1 03
    row#2[7993] flag: ------, lock: 2, len=13, data:(8):  01 80 00 ae 00 00 01 00
    col 0; len 2; (2):  c1 09
    ----- end of leaf block dump -----

    能够看到，该index block中还存在3个index entry信息。我们须要将第3条信息给删掉，首先计算一下offset：

    ?

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    SQL> select 7993+76+24 from dual;
    7993+76+24
    ----------
    8093

    +++++利用bbed改动 index block

    ?

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    BBED> set file 6 block 187
    FILE#           6
    BLOCK#          187
    BBED> map
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187                                   Dba:0x018000bb
    ------------------------------------------------------------
    KTB Data Block (Index Leaf)
    struct kcbh, 20 bytes                      @0
    struct ktbbh, 72 bytes                     @20
    struct kdxle, 32 bytes                     @100
    sb2 kd_off[3]                              @132
    ub1 freespace[7951]                        @138
    ub1 rowdata[39]                            @8089
    ub4 tailchk                                @8188
    BBED> set offset 8093
    OFFSET          8093
    BBED> x /rn
    rowdata[4]                                  @8093
    ----------
    flag@8093:     0x00 (NONE)
    lock@8094:     0x02
    keydata[8]:    0x01  0x80  0x00  0xae  0x00  0x00  0x01  0x00
    data key:
    col    0[2] @8104: 8
    BBED> map
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187                                   Dba:0x018000bb
    ------------------------------------------------------------
    KTB Data Block (Index Leaf)
    struct kcbh, 20 bytes                      @0
    struct ktbbh, 72 bytes                     @20
    struct kdxle, 32 bytes                     @100
    sb2 kd_off[3]                              @132
    ub1 freespace[7951]                        @138
    ub1 rowdata[39]                            @8089
    ub4 tailchk                                @8188
    BBED> p kdxle
    struct kdxle, 32 bytes                      @100
    struct kdxlexco, 16 bytes                @100
    ub1 kdxcolev                          @100      0x00
    ub1 kdxcolok                          @101      0x00
    ub1 kdxcoopc                          @102      0x80
    ub1 kdxconco                          @103      0x01
    ub4 kdxcosdc                          @104      0x00000000
    sb2 kdxconro                          @108      3
    sb2 kdxcofbo                          @110      42
    sb2 kdxcofeo                          @112      7993
    sb2 kdxcoavs                          @114      7951
    sb2 kdxlespl                             @116      0
    sb2 kdxlende                             @118      0
    ub4 kdxlenxt                             @120      0x00000000
    ub4 kdxleprv                             @124      0x00000000
    ub1 kdxledsz                             @128      0x08
    ub1 kdxleflg                             @129      0x00 (NONE)
    BBED> d /v offset 118 count 2
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187     Offsets:  118 to  119  Dba:0x018000bb
    -------------------------------------------------------
    0000                                l ..
    <16 bytes per line>
    BBED> modify /x 01 offset 118
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187              Offsets:  118 to  119           Dba:0x018000bb
    ------------------------------------------------------------------------
    0100
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 187:
    current = 0x4faa, required = 0x4faa
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 187
    Block Checking: DBA = 25166011, Block Type = KTB-managed data block
    **** actual rows marked deleted = 0 != kdxlende = 1
    ---- end index block validation
    Block 187 failed with check code 6401
    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): 1
    Total Blocks Empty            : 0
    Total Blocks Marked Corrupt   : 0
    Total Blocks Influx           : 0
    Message 531 not found;  product=RDBMS; facility=BBED
    BBED> set offset 8093
    OFFSET          8093
    BBED> x /rn
    rowdata[4]                                  @8093
    ----------
    flag@8093:     0x00 (NONE)
    lock@8094:     0x02
    keydata[8]:    0x01  0x80  0x00  0xae  0x00  0x00  0x01  0x00
    data key:
    col    0[2] @8104: 8
    BBED> modify /x 01 offset 8093
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187              Offsets: 8093 to 8094           Dba:0x018000bb
    ------------------------------------------------------------------------
    0102
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 187:
    current = 0x4eaa, required = 0x4eaa
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 187
    Block Checking: DBA = 25166011, Block Type = KTB-managed data block
    **** actual free space credit for itl 2 = 15 != # in trans. hdr = 0
    ---- end index block validation
    Block 187 failed with check code 6401
    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): 1
    Total Blocks Empty            : 0
    Total Blocks Marked Corrupt   : 0
    Total Blocks Influx           : 0
    Message 531 not found;  product=RDBMS; facility=BBED
    BBED> map
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187                                   Dba:0x018000bb
    ------------------------------------------------------------
    KTB Data Block (Index Leaf)
    struct kcbh, 20 bytes                      @0
    struct ktbbh, 72 bytes                     @20
    struct kdxle, 32 bytes                     @100
    sb2 kd_off[3]                              @132
    ub1 freespace[7951]                        @138
    ub1 rowdata[39]                            @8089
    ub4 tailchk                                @8188
    BBED> p ktbbh
    struct ktbbh, 72 bytes                      @20
    ub1 ktbbhtyp                             @20       0x02 (KDDBTINDEX)
    union ktbbhsid, 4 bytes                  @24
    ub4 ktbbhsg1                          @24       0x00012ed2
    ub4 ktbbhod1                          @24       0x00012ed2
    struct ktbbhcsc, 8 bytes                 @28
    ub4 kscnbas                           @28       0x00b941a3
    ub2 kscnwrp                           @32       0x0000
    sb2 ktbbhict                             @36       2
    ub1 ktbbhflg                             @38       0x32 (NONE)
    ub1 ktbbhfsl                             @39       0x00
    ub4 ktbbhfnx                             @40       0x018000b8
    struct ktbbhitl[0], 24 bytes             @44
    struct ktbitxid, 8 bytes              @44
    ub2 kxidusn                        @44       0x0000
    ub2 kxidslt                        @46       0x0000
    ub4 kxidsqn                        @48       0x00000000
    struct ktbituba, 8 bytes              @52
    ub4 kubadba                        @52       0x00000000
    ub2 kubaseq                        @56       0x0000
    ub1 kubarec                        @58       0x00
    ub2 ktbitflg                          @60       0x0000 (NONE)
    union _ktbitun, 2 bytes               @62
    sb2 _ktbitfsc                      @62       0
    ub2 _ktbitwrp                      @62       0x0000
    ub4 ktbitbas                          @64       0x00000000
    struct ktbbhitl[1], 24 bytes             @68
    struct ktbitxid, 8 bytes              @68
    ub2 kxidusn                        @68       0x0009
    ub2 kxidslt                        @70       0x0002
    ub4 kxidsqn                        @72       0x0000044c
    struct ktbituba, 8 bytes              @76
    ub4 kubadba                        @76       0x00c000f9
    ub2 kubaseq                        @80       0x014a
    ub1 kubarec                        @82       0x1e
    ub2 ktbitflg                          @84       0x2001 (KTBFUPB)
    union _ktbitun, 2 bytes               @86
    sb2 _ktbitfsc                      @86       0
    ub2 _ktbitwrp                      @86       0x0000
    ub4 ktbitbas                          @88       0x00b941a4
    BBED> d /v offset 86 count 2
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187     Offsets:   86 to   87  Dba:0x018000bb
    -------------------------------------------------------
    0000                                l ..
    <16 bytes per line>
    BBED> modify /x 0f offset 86
    File: /oracle/oradata/roger/roger01.dbf (6)
    Block: 187              Offsets:   86 to   87           Dba:0x018000bb
    ------------------------------------------------------------------------
    0f00
    <32 bytes per line>
    BBED> sum apply
    Check value for File 6, Block 187:
    current = 0x4ea5, required = 0x4ea5
    BBED> verify
    DBVERIFY - Verification starting
    FILE = /oracle/oradata/roger/roger01.dbf
    BLOCK = 187
    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

    到这里。我们完毕了Index Block的改动。最后我们再来校验一下前面的data block，你会发现已经ok了。例如以下：

    BBED> set file 2 block 174
    FILE#           2
    BLOCK#          174

    BBED> verify
    DBVERIFY – Verification starting
    FILE = /oracle/oradata/roger/sysaux01.dbf
    BLOCK = 174
    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            : 1
    Total Blocks Marked Corrupt   : 0
    Total Blocks Influx           : 0
    Message 531 not found;  product=RDBMS; facility=BBED
    BBED>
    +++++ 最后来验证下数据

    ?
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    SQL> alter system flush buffer_cache;
    System altered.
    SQL> select * from roger.t_0610;
    ID NAME
    ---------- -------------
    1 baidu
    2 google

    到目前为止。整个模拟测试结束，以供参考！

    版权声明：本文博主原创文章。博客，未经同意不得转载。
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  • 原文地址：https://www.cnblogs.com/lcchuguo/p/4804076.html
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