首頁 資料庫 mysql教程 手工提交Cluster Table的事务

手工提交Cluster Table的事务

Jun 07, 2016 pm 04:36 PM
cluster table 事務 提交 文章

本站文章除注明转载外,均为本站原创: 转载自love wife love life —Roger 的Oracle技术博客 本文链接地址: 手工提交Cluster Table的事务 前几天培训班中有学生问到,对于cluster table如果去实现手工提交事务,来屏蔽一些错误.他在自己的 环境中遇到了ora-00

本站文章除注明转载外,均为本站原创: 转载自love wife & love life —Roger 的Oracle技术博客

本文链接地址: 手工提交Cluster Table的事务

前几天培训班中有学生问到,对于cluster table如果去实现手工提交事务,来屏蔽一些错误.他在自己的
环境中遇到了ora-00600 4000错误,涉及的对象即为cluster table,下面我这里简单模拟了一下。供参考!

++++创建测试表

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
登入後複製

++++blockdump内容

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...........<.. ...a...... repeat times block header dump: object id on y seg csc: itc: flg: e typ: data brn: bdba: ver: opc: inc: exflg: itl xid uba flag lck scn c--- fsc data_block_dump at tsiz: hsiz: pbl: 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</..>
登入後複製

大家可以看到,这跟普通的data block的dump内容是有所差别的,因为这里涉及到cluster table。

下面来模拟下手工提交cluster table的事务。

+++++模拟事务不提交

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>
登入後複製

这里我们可以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
测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。

+++++首先修改表的itl等信息

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
 BBED> modify /x 00 offset 86
 File: /oracle/oradata/roger/roger01.dbf (6)
 Block: 174              Offsets:   86 to   87           Dba:0x018000ae
------------------------------------------------------------------------
 0000
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
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 ....
BBED> modify /x 01 offset 102
 File: /oracle/oradata/roger/roger01.dbf (6)
 Block: 174              Offsets:  102 to  105           Dba:0x018000ae
------------------------------------------------------------------------
 0100ffff
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.
BBED> modify /x 18 offset 106
 File: /oracle/oradata/roger/roger01.dbf (6)
 Block: 174              Offsets:  106 to  109           Dba:0x018000ae
------------------------------------------------------------------------
 1800781f
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 ....
BBED> modify /x 000000 offset 118
 File: /oracle/oradata/roger/roger01.dbf (6)
 Block: 174              Offsets:  118 to  121           Dba:0x018000ae
------------------------------------------------------------------------
 00000000
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
登入後複製

我们可以看到,无论怎么修改,这个block通过bbed进行检测都报错,这里不是因为修改的不对,而是因为
还需要修改cluster 上的Index信息。通过treedump 我们可以确认index block为file 6 block 187.

+++++ dump Index block

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>
登入後複製

+++++ dump 内容如下

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 -----
登入後複製

可以看到,该index block中还存在3个index entry信息,我们需要将第3条信息给删掉,首先计算一下offset:

SQL> select 7993+76+24 from dual;
7993+76+24
----------
 8093
登入後複製

+++++利用bbed修改 index block

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 ..
BBED> modify /x 01 offset 118
 File: /oracle/oradata/roger/roger01.dbf (6)
 Block: 187              Offsets:  118 to  119           Dba:0x018000bb
------------------------------------------------------------------------
 0100
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
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 ..
BBED> modify /x 0f offset 86
 File: /oracle/oradata/roger/roger01.dbf (6)
 Block: 187              Offsets:   86 to   87           Dba:0x018000bb
------------------------------------------------------------------------
 0f00
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
登入後複製

到这里,我们完成了Index Block的修改,最后我们再来校验一下前面的data block,你会发现已经ok了,如下:

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

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

至此,整个模拟测试结束,供参考!

Related posts:

  1. 创建index之前如何确定其大小
  2. ora-00600 [kddummy_blkchk] solution
  3. 如何修复未格式化的坏块?
  4. Archivelog 模式下,datafile header损坏,如何恢复?
  5. datafile 也能跨resetlogs ?
手工提交Cluster Table的事务 本站文章除注明转载外,均为本站原创: 转载自love wife & love life —Roger 的Oracle技术博客 本文链接地址: 手工提交Cluster Table的事务 前几天培训班中有学生问到,对于cluster table如果去实现手工提交事务,来屏蔽一些错误.他在自己的 环境中遇到了ora-00600 4000错误,涉及的对象即为cluster table,下面我这里简单模拟了一下。供参考! ++++创建测试表 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. [...]手工提交Cluster Table的事务
本網站聲明
本文內容由網友自願投稿,版權歸原作者所有。本站不承擔相應的法律責任。如發現涉嫌抄襲或侵權的內容,請聯絡admin@php.cn

熱AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智慧驅動的應用程序,用於創建逼真的裸體照片

AI Clothes Remover

AI Clothes Remover

用於從照片中去除衣服的線上人工智慧工具。

Undress AI Tool

Undress AI Tool

免費脫衣圖片

Clothoff.io

Clothoff.io

AI脫衣器

Video Face Swap

Video Face Swap

使用我們完全免費的人工智慧換臉工具,輕鬆在任何影片中換臉!

熱工具

記事本++7.3.1

記事本++7.3.1

好用且免費的程式碼編輯器

SublimeText3漢化版

SublimeText3漢化版

中文版,非常好用

禪工作室 13.0.1

禪工作室 13.0.1

強大的PHP整合開發環境

Dreamweaver CS6

Dreamweaver CS6

視覺化網頁開發工具

SublimeText3 Mac版

SublimeText3 Mac版

神級程式碼編輯軟體(SublimeText3)

今日頭條發布文章怎麼有收益?今日頭條發布文章獲得更多收益方法! 今日頭條發布文章怎麼有收益?今日頭條發布文章獲得更多收益方法! Mar 15, 2024 pm 04:13 PM

一、今日頭條發布文章怎麼有收益?今日頭條發布文章獲得更多收益方法! 1.開通基礎權益:原創文章選擇投放廣告可獲得收益,影片必須原創橫屏才會有收益。 2.開通百粉權益:粉絲量達百粉以上,微頭條、原創問答創作及問答均可獲得收益。 3.堅持原創作品:原創作品包含文章、微標題及問題等,要求300字以上。注意違規抄襲作品作為原創發布,會被扣信用分,即使有收益也會被扣除。 4.垂直度:做專業領域一類的文章,不能隨意跨領域寫文章,會得不到合適的推薦,達不到作品的專和精,難以吸引粉絲讀者。 5.活躍度:活躍度高,

Lock wait timeout exceeded; try restarting transaction - 如何解決MySQL報錯:事務等待逾時 Lock wait timeout exceeded; try restarting transaction - 如何解決MySQL報錯:事務等待逾時 Oct 05, 2023 am 08:46 AM

Lockwaittimeoutexceeded;tryrestartingtransaction-如何解決MySQL報錯:事務等待逾時在使用MySQL資料庫時,有時可能會遇到一個常見的錯誤:Lockwaittimeoutexceeded;tryrestartingtransaction,該錯誤表示事務等待逾時。這個錯誤通常發生在並且

MySQL事務處理:自動提交與手動提交的區別 MySQL事務處理:自動提交與手動提交的區別 Mar 16, 2024 am 11:33 AM

MySQL事務處理:自動提交與手動提交的差異在MySQL資料庫中,事務是一組SQL語句的集合,要麼全部執行成功,要麼全部執行失敗,保證了資料的一致性和完整性。在MySQL中,事務可以分為自動提交和手動提交,其區別在於事務提交的時機以及對事務的控制範圍。以下將詳細介紹自動提交和手動提交的區別,並給出具體的程式碼範例來說明。一、自動提交在MySQL中,如果沒有顯示

PHP PDO教學:從基礎到精通的進階指南 PHP PDO教學:從基礎到精通的進階指南 Feb 19, 2024 pm 06:30 PM

1.PDO簡介PDO是PHP的擴充庫,它提供了一個物件導向的方式來操作資料庫。 PDO支援多種資料庫,包括Mysql、postgresql、oracle、SQLServer等。 PDO使開發人員能夠使用統一的api來操作不同的資料庫,這使得開發人員可以在不同的資料庫之間輕鬆切換。 2.PDO連接資料庫要使用PDO連接資料庫,首先需要建立一個PDO物件。 PDO物件的建構函式接收三個參數:資料庫類型、主機名稱、資料庫使用者名稱和密碼。例如,以下程式碼建立了一個連接到mysql資料庫的物件:$dsn="mysq

MongoDB技術開發中遇到的事務管理問題解決方案分析 MongoDB技術開發中遇到的事務管理問題解決方案分析 Oct 08, 2023 am 08:15 AM

MongoDB技術開發中遇到的事務管理問題解決方案分析隨著現代應用程式變得越來越複雜和龐大,對資料的事務處理需求也越來越高。作為一種流行的NoSQL資料庫,MongoDB在資料管理方面有著出色的效能和擴展性。然而,MongoDB在資料一致性和事務管理方面相對較弱,為開發人員帶來了挑戰。在本文中,我們將探討在MongoDB開發中遇到的事務管理問題,並提出一些解

Java資料庫連線如何處理事務和並發? Java資料庫連線如何處理事務和並發? Apr 16, 2024 am 11:42 AM

事務確保資料庫資料完整性,包括原子性、一致性、隔離性和持久性。 JDBC使用Connection介面提供交易控制(setAutoCommit、commit、rollback)。並發控制機制協調並發操作,使用鎖或樂觀/悲觀並發控制來實現事務隔離性,以防止資料不一致。

MySQL事務的原理及應用場景 MySQL事務的原理及應用場景 Mar 02, 2024 am 09:51 AM

MySQL事務的原理及應用場景在資料庫系統中,事務是一組SQL操作的集合,這些操作要麼全部成功執行,要麼全部失敗回滾。 MySQL作為一種常用的關聯式資料庫管理系統,支援事務的特性,能夠確保資料庫中的資料在一致性、隔離性、持久性和原子性方面得到保證。本文將從MySQL事務的基本原理入手,介紹其應用場景,並提供具體的程式碼範例供讀者參考。 MySQL事務的原理:My

掌握 PHP PDO 的力量:進階查詢與更新 掌握 PHP PDO 的力量:進階查詢與更新 Feb 20, 2024 am 08:24 AM

PHP資料物件(PDO)擴充功能提供了與資料庫伺服器高效且物件導向的互動。其高級查詢和更新功能使開發人員能夠執行複雜的資料庫操作,從而提高效能和程式碼可維護性。本文將深入探討PDO的高階查詢與更新功能,引導您掌握其強大功能。進階查詢:使用佔位符和綁定參數佔位符和綁定參數是提高查詢效能和安全性的重要工具。佔位符使用問號(?)表示查詢中可替換的參數,而綁定參數則允許指定每個參數的資料類型和值。透過使用這些方法,您可以避免sql注入攻擊並提高效能,因為資料庫引擎可以提前最佳化查詢。 //使用佔位符$stmt=$

See all articles