BBED查看数据块

BBED> set dba 4,556
DBA  0x0100022c  (16777772 4,556)

BBED> map
File: D:\APP\ORADATA\ORCL\USERS01.DBF (4)
Block: 556 Dba:0x0100022c

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[14] @142
ub1 freespace[7451] @170
ub1 rowdata[567] @7621
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 0x0100022b
ub4 bas_kcbh @8 0x82d4bf48
ub2 wrp_kcbh @12 0x0001
ub1 seq_kcbh @14 0x02
ub1 flg_kcbh @15 0x06 (KCBHFDLC, KCBHFCKV)
ub2 chkval_kcbh @16 0x0257
ub2 spare3_kcbh @18 0x0000

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 0x0100022b
ub4 bas_kcbh @8 0x82d4bf48
ub2 wrp_kcbh @12 0x0001
ub1 seq_kcbh @14 0x02
ub1 flg_kcbh @15 0x06 (KCBHFDLC, KCBHFCKV)
ub2 chkval_kcbh @16 0x0257
ub2 spare3_kcbh @18 0x0000

BBED> p ktbbh
struct ktbbh, 96 bytes @20
ub1 ktbbhtyp @20 0x01 (KDDBTDATA)
union ktbbhsid, 4 bytes @24
ub4 ktbbhsg1 @24 0x00016699
ub4 ktbbhod1 @24 0x00016699
struct ktbbhcsc, 8 bytes @28
ub4 kscnbas @28 0x82d4a54d
ub2 kscnwrp @32 0x0001
b2 ktbbhict @36 3
ub1 ktbbhflg @38 0x32 (NONE)
ub1 ktbbhfsl @39 0x00
ub4 ktbbhfnx @40 0x01000228
struct ktbbhitl[0], 24 bytes @44
struct ktbitxid, 8 bytes @44
ub2 kxidusn @44 0xffff
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 0x8000 (KTBFCOM)
union _ktbitun, 2 bytes @62
b2 _ktbitfsc @62 1
ub2 _ktbitwrp @62 0x0001
ub4 ktbitbas @64 0x82d4a54d
struct ktbbhitl[1], 24 bytes @68
struct ktbitxid, 8 bytes @68
ub2 kxidusn @68 0x0005
ub2 kxidslt @70 0x0001
ub4 kxidsqn @72 0x0000138c
struct ktbituba, 8 bytes @76
ub4 kubadba @76 0x00c00183
ub2 kubaseq @80 0x03ca
ub1 kubarec @82 0x16
ub2 ktbitflg @84 0x2001 (KTBFUPB)
union _ktbitun, 2 bytes @86
b2 _ktbitfsc @86 38
ub2 _ktbitwrp @86 0x0026
ub4 ktbitbas @88 0x82d4bf48
struct ktbbhitl[2], 24 bytes @92
struct ktbitxid, 8 bytes @92
ub2 kxidusn @92 0x0000
ub2 kxidslt @94 0x0000
ub4 kxidsqn @96 0x00000000
struct ktbituba, 8 bytes @100
ub4 kubadba @100 0x00000000
ub2 kubaseq @104 0x0000
ub1 kubarec @106 0x00
ub2 ktbitflg @108 0x0000 (NONE)
union _ktbitun, 2 bytes @110
b2 _ktbitfsc @110 0
ub2 _ktbitwrp @110 0x0000
ub4 ktbitbas @112 0x00000000

BBED> p kdbh
struct kdbh, 14 bytes @124
ub1 kdbhflag @124 0x00 (NONE)
b1 kdbhntab @125 1
b2 kdbhnrow @126 14
sb2 kdbhfrre @128 -1
sb2 kdbhfsbo @130 46
sb2 kdbhfseo @132 7497
b2 kdbhavsp @134 7451
b2 kdbhtosp @136 7491

BBED> p kdbt
struct kdbt[0], 4 bytes @138
b2 kdbtoffs @138 0
b2 kdbtnrow @140 14

BBED> p tailchk
ub4 tailchk @8188 0xbf480602

window下查看数据文件信息是，需set dba 4,2；linux下是set dba 4,1。再使用p kcvfh查看

tailchk由bas_kcbh后四位+type_kcb+seq_kcbh。