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Oracle 如何提交手册Cluster Table事务

时间：2021-07-01 10:21:17 帮助过：2人阅读

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 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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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 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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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 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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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 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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1 2 3 4 5 6 7 8 9 10 11 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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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 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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1 2 3 4 5 SQL> select 7993+76+24 from dual; 7993+76+24 ---------- 8093

+++++利用bbed改动 index block

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 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   &

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