bbed简单替换block测试

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bbed简单替换block测试

bbed简单替换block测试:有朋友在我论坛中提问copy一个块，如何在前台显示其中数据,前段时间比较忙,没有及时答复该问题,今天通过试验方式进行了测试说明,本试验简单,仅是同一个数据文件中的同一个对象中的两个block进行了替换创建测试表 SQL conn chf/xifenfeiConnec

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导读bbed简单替换block测试:有朋友在我论坛中提问copy一个块，如何在前台显示其中数据,前段时间比较忙,没有及时答复该问题,今天通过试验方式进行了测试说明,本试验简单,仅是同一个数据文件中的同一个对象中的两个block进行了替换创建测试表 SQL conn chf/xifenfeiConnec

有朋友在我论坛中提问copy一个块，如何在前台显示其中数据,前段时间比较忙,没有及时答复该问题,今天通过试验方式进行了测试说明,本试验简单,仅是同一个数据文件中的同一个对象中的两个block进行了替换创建测试表 SQL conn chf/xifenfeiConnected.SQL create

有朋友在我论坛中提问copy一个块，如何在前台显示其中数据,前段时间比较忙,没有及时答复该问题,今天通过试验方式进行了测试说明,本试验简单,仅是同一个数据文件中的同一个对象中的两个block进行了替换
创建测试表

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

查询file 4 block 180 数据情况

SQL> select object_id from t_xifenfei where dbms_rowid.rowid_relative_fno(rowid)=4 
 2 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.

查询file 4 block 181 数据情况

SQL> select object_id from t_xifenfei where dbms_rowid.rowid_relative_fno(rowid)=4 
 2 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.

定位file 4 文件名

SQL> select name from v$datafile where file#=4;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/ORCL/users01.dbf

bbed 替换file 4 block 180到file 4 block 181

[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 
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 
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 
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 
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

验证替换后的file 4 block 181

SQL> select object_id from t_xifenfei where dbms_rowid.rowid_relative_fno(rowid)=4
 2 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.

通过替换block 180的block到181,查询block 181和180数据相同,证明替换block成功

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原文地址：bbed简单替换block测试, 感谢原作者分享。