|
发表于 2014-9-14 22:43:30
|
显示全部楼层
我做了测试,结果是ok的,请看如下过程
- SQL> conn chf/xifenfei
- Connected.
- SQL> create table t_xifenfei as select * from dba_objects;
- Table created.
- SQL> select EXTENT_ID,FILE_ID,BLOCK_ID,BLOCKS from dba_extents where segment_name='T_XIFENFEI' AND OWNER='CHF';
- EXTENT_ID FILE_ID BLOCK_ID BLOCKS
- ---------- ---------- ---------- ----------
- 0 4 176 8
- 1 4 184 8
- 2 4 192 8
- 3 4 200 8
- 4 4 208 8
- 5 4 216 8
- 6 4 224 8
- 7 4 232 8
- 8 4 240 8
- 9 4 248 8
- 10 4 256 8
- EXTENT_ID FILE_ID BLOCK_ID BLOCKS
- ---------- ---------- ---------- ----------
- 11 4 264 8
- 12 4 272 8
- 13 4 280 8
- 14 4 288 8
- 15 4 296 8
- 16 4 384 128
- 17 4 512 128
- 18 4 640 128
- 19 4 768 128
- 20 4 896 128
- 21 4 1024 128
- EXTENT_ID FILE_ID BLOCK_ID BLOCKS
- ---------- ---------- ---------- ----------
- 22 4 1152 128
- 23 4 1280 128
- 24 4 1408 128
- 25 rows selected.
- SQL> select * from (select distinct dbms_rowid.rowid_relative_fno(rowid),
- 2 dbms_rowid.rowid_block_number(rowid) from t_xifenfei ORDER BY 2 )where rownum<5 ;
- DBMS_ROWID.ROWID_RELATIVE_FNO(ROWID) DBMS_ROWID.ROWID_BLOCK_NUMBER(ROWID)
- ------------------------------------ ------------------------------------
- 4 179
- 4 180
- 4 181
- 4 182
- SQL> select object_id from t_xifenfei where dbms_rowid.rowid_relative_fno(rowid)=4 and dbms_rowid.rowid_block_number(rowid)=180;
- OBJECT_ID
- ----------
- 81
- 82
- 83
- 84
- 85
- 86
- 87
- 88
- 89
- 90
- 91
- OBJECT_ID
- ----------
- 92
- 93
- 94
- 95
- 96
- 97
- 98
- 99
- 100
- 101
- 102
- OBJECT_ID
- ----------
- 103
- 104
- 105
- 106
- 107
- 108
- 109
- 110
- 111
- 112
- 113
- OBJECT_ID
- ----------
- 114
- 115
- 116
- 117
- 118
- 119
- 120
- 121
- 122
- 123
- 124
- OBJECT_ID
- ----------
- 125
- 126
- 127
- 129
- 128
- 130
- 131
- 132
- 133
- 134
- 135
- OBJECT_ID
- ----------
- 137
- 136
- 138
- 139
- 140
- 141
- 142
- 143
- 144
- 145
- 146
- OBJECT_ID
- ----------
- 147
- 148
- 149
- 150
- 151
- 153
- 152
- 154
- 155
- 156
- 76 rows selected.
- SQL> select object_id from t_xifenfei where dbms_rowid.rowid_relative_fno(rowid)=4 and dbms_rowid.rowid_block_number(rowid)=181;
- OBJECT_ID
- ----------
- 157
- 158
- 159
- 160
- 161
- 162
- 163
- 164
- 165
- 166
- 167
- OBJECT_ID
- ----------
- 168
- 169
- 170
- 171
- 172
- 173
- 174
- 175
- 176
- 177
- 178
- OBJECT_ID
- ----------
- 179
- 180
- 181
- 182
- 183
- 184
- 185
- 186
- 187
- 188
- 189
- OBJECT_ID
- ----------
- 190
- 191
- 192
- 193
- 194
- 195
- 196
- 197
- 198
- 199
- 200
- OBJECT_ID
- ----------
- 201
- 202
- 203
- 204
- 205
- 206
- 208
- 207
- 209
- 210
- 211
- OBJECT_ID
- ----------
- 212
- 213
- 214
- 215
- 216
- 217
- 218
- 219
- 220
- 221
- 222
- OBJECT_ID
- ----------
- 223
- 224
- 225
- 226
- 227
- 228
- 229
- 230
- 231
- 75 rows selected.
- SQL> select name from v$datafile where file#=4;
- NAME
- --------------------------------------------------------------------------------
- /u01/app/oracle/oradata/ORCL/users01.dbf
- [oracle@oel6 ~]$ bbed filename='/u01/app/oracle/oradata/ORCL/users01.dbf' mode=edit blocksize=8192
- Password:
- BBED: Release 2.0.0.0.0 - Limited Production on Wed Aug 6 21:17:11 2014
- Copyright (c) 1982, 2013, Oracle and/or its affiliates. All rights reserved.
- ************* !!! For Oracle Internal Use only !!! ***************
- BBED> show all
- FILE# 0
- BLOCK# 1
- OFFSET 0
- DBA 0x00000000 (0 0,1)
- FILENAME /u01/app/oracle/oradata/ORCL/users01.dbf
- BIFILE bifile.bbd
- LISTFILE
- BLOCKSIZE 8192
- MODE Edit
- EDIT Unrecoverable
- IBASE Dec
- OBASE Dec
- WIDTH 80
- COUNT 512
- LOGFILE log.bbd
- SPOOL No
- BBED> map
- File: /u01/app/oracle/oradata/ORCL/users01.dbf (0)
- Block: 180 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[76] @142
- ub1 freespace[856] @294
- ub1 rowdata[7038] @1150
- ub4 tailchk @8188
- BBED> p kcbh
- struct kcbh, 20 bytes @0
- ub1 type_kcbh @0 0x06
- ub1 frmt_kcbh @1 0xa2
- ub1 spare1_kcbh @2 0x00
- ub1 spare2_kcbh @3 0x00
- ub4 rdba_kcbh @4 0x010000b4
- ub4 bas_kcbh @8 0x000b258a
- ub2 wrp_kcbh @12 0x0000
- ub1 seq_kcbh @14 0x02
- ub1 flg_kcbh @15 0x04 (KCBHFCKV)
- ub2 chkval_kcbh @16 0x0eb6
- ub2 spare3_kcbh @18 0x0000
- BBED> p kcbh block 181
- struct kcbh, 20 bytes @0
- ub1 type_kcbh @0 0x06
- ub1 frmt_kcbh @1 0xa2
- ub1 spare1_kcbh @2 0x00
- ub1 spare2_kcbh @3 0x00
- ub4 rdba_kcbh @4 0x010000b5
- ub4 bas_kcbh @8 0x000b258a
- ub2 wrp_kcbh @12 0x0000
- ub1 seq_kcbh @14 0x02
- ub1 flg_kcbh @15 0x04 (KCBHFCKV)
- ub2 chkval_kcbh @16 0xa1c5
- ub2 spare3_kcbh @18 0x0000
- BBED> copy block 180 to block 181
- File: /u01/app/oracle/oradata/ORCL/users01.dbf (0)
- Block: 181 Offsets: 0 to 511 Dba:0x00000000
- ------------------------------------------------------------------------
- 06a20000 b4000001 8a250b00 00000204 b60e0000 01000000 252d0100 84250b00
- 00000000 03003200 b0000001 ffff0000 00000000 00000000 00000000 00800000
- 84250b00 00000000 00000000 00000000 00000000 00000000 00000000 00000000
- 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00014c00
- ffffaa00 02045803 58030000 4c00221f c21e661e 0e1eb01d 521df81c 9e1c421c
- ea1b901b 361be11a 8c1a361a da198019 2419c818 73181918 b9176017 0717ae16
- 5416f815 a2154915 f0149614 3914dc13 7f131f13 c8126e12 1412ba11 61110511
- a9104f10 f20f900f 370fdc0e 710e070e a60d430d df0c850c 2a0ccf0b 640bfa0a
- 9d0a400a e6098509 2e09d408 79081e08 c3076607 0907a206 3806e005 75050b05
- b0045a04 02040000 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 block 181
- struct kcbh, 20 bytes @0
- ub1 type_kcbh @0 0x06
- ub1 frmt_kcbh @1 0xa2
- ub1 spare1_kcbh @2 0x00
- ub1 spare2_kcbh @3 0x00
- ub4 rdba_kcbh @4 0x010000b4
- ub4 bas_kcbh @8 0x000b258a
- ub2 wrp_kcbh @12 0x0000
- ub1 seq_kcbh @14 0x02
- ub1 flg_kcbh @15 0x04 (KCBHFCKV)
- ub2 chkval_kcbh @16 0x0eb6
- ub2 spare3_kcbh @18 0x0000
- BBED> p rdba_kcbh
- ub4 rdba_kcbh @4 0x010000b4
- BBED> d
- File: /u01/app/oracle/oradata/ORCL/users01.dbf (0)
- Block: 181 Offsets: 4 to 515 Dba:0x00000000
- ------------------------------------------------------------------------
- b4000001 8a250b00 00000204 b60e0000 01000000 252d0100 84250b00 00000000
- 03003200 b0000001 ffff0000 00000000 00000000 00000000 00800000 84250b00
- 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
- 00000000 00000000 00000000 00000000 00000000 00000000 00014c00 ffffaa00
- 02045803 58030000 4c00221f c21e661e 0e1eb01d 521df81c 9e1c421c ea1b901b
- 361be11a 8c1a361a da198019 2419c818 73181918 b9176017 0717ae16 5416f815
- a2154915 f0149614 3914dc13 7f131f13 c8126e12 1412ba11 61110511 a9104f10
- f20f900f 370fdc0e 710e070e a60d430d df0c850c 2a0ccf0b 640bfa0a 9d0a400a
- e6098509 2e09d408 79081e08 c3076607 0907a206 3806e005 75050b05 b0045a04
- 02040000 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> set count 32
- COUNT 32
- BBED> d
- File: /u01/app/oracle/oradata/ORCL/users01.dbf (0)
- Block: 181 Offsets: 4 to 35 Dba:0x00000000
- ------------------------------------------------------------------------
- b4000001 8a250b00 00000204 b60e0000 01000000 252d0100 84250b00 00000000
- <32 bytes per line>
- BBED> m /x b5
- File: /u01/app/oracle/oradata/ORCL/users01.dbf (0)
- Block: 181 Offsets: 4 to 35 Dba:0x00000000
- ------------------------------------------------------------------------
- b5000001 8a250b00 00000204 b60e0000 01000000 252d0100 84250b00 00000000
- <32 bytes per line>
- BBED> sum apply
- Check value for File 0, Block 181:
- current = 0x0eb7, required = 0x0eb7
- BBED> p kcbh block 181
- struct kcbh, 20 bytes @0
- ub1 type_kcbh @0 0x06
- ub1 frmt_kcbh @1 0xa2
- ub1 spare1_kcbh @2 0x00
- ub1 spare2_kcbh @3 0x00
- ub4 rdba_kcbh @4 0x010000b5
- ub4 bas_kcbh @8 0x000b258a
- ub2 wrp_kcbh @12 0x0000
- ub1 seq_kcbh @14 0x02
- ub1 flg_kcbh @15 0x04 (KCBHFCKV)
- ub2 chkval_kcbh @16 0x0eb7
- ub2 spare3_kcbh @18 0x0000
- SQL> select object_id from t_xifenfei where dbms_rowid.rowid_relative_fno(rowid)=4 and dbms_rowid.rowid_block_number(rowid)=181;
- OBJECT_ID
- ----------
- 81
- 82
- 83
- 84
- 85
- 86
- 87
- 88
- 89
- 90
- 91
- OBJECT_ID
- ----------
- 92
- 93
- 94
- 95
- 96
- 97
- 98
- 99
- 100
- 101
- 102
- OBJECT_ID
- ----------
- 103
- 104
- 105
- 106
- 107
- 108
- 109
- 110
- 111
- 112
- 113
- OBJECT_ID
- ----------
- 114
- 115
- 116
- 117
- 118
- 119
- 120
- 121
- 122
- 123
- 124
- OBJECT_ID
- ----------
- 125
- 126
- 127
- 129
- 128
- 130
- 131
- 132
- 133
- 134
- 135
- OBJECT_ID
- ----------
- 137
- 136
- 138
- 139
- 140
- 141
- 142
- 143
- 144
- 145
- 146
- OBJECT_ID
- ----------
- 147
- 148
- 149
- 150
- 151
- 153
- 152
- 154
- 155
- 156
- 76 rows selected.
复制代码 |
|