BBED> print type_kcbh
ub1 type_kcbh @0 0x06
BBED> print frmt_kcbh
ub1 frmt_kcbh @1 0xa2
事务层:
BBED> print ktbbh
struct ktbbh, 72 bytes @20
ub1 ktbbhtyp @20 0x01 (KDDBTDATA) ==>块类型,01 Data,02 Index
union ktbbhsid, 4 bytes @24 ==>对象号(DBA_OBJECTS.OBJECT_ID)/段号
ub4 ktbbhsg1 @24 0x0001a2c4 ==>对象段号
ub4 ktbbhod1 @24 0x0001a2c4 ==>对象号
struct ktbbhcsc, 8 bytes @28
ub4 kscnbas @28 0x002fbaab ==>SCN Base
ub2 kscnwrp @32 0x0000 ==>SCN Wrap
sb2 ktbbhict @36 2 ==>事务槽号(ITL number)
ub1 ktbbhflg @38 0x32 (NONE) ==>on the free list
ub1 ktbbhfsl @39 0x00 ==>ITL TX free list slot
ub4 ktbbhfnx @40 0x01c00080 ==>下一个空闲块的地址 (next free block dba)
struct ktbbhitl[0], 24 bytes @44 ==>事务槽1
struct ktbitxid, 8 bytes @44 ==>xid V$TRANSACTION.XID
ub2 kxidusn @44 0x0005 ==>usn V$TRANSACTION.XIDUSN
ub2 kxidslt @46 0x001f ==>slot V$TRANSACTION.XIDSLOT
ub4 kxidsqn @48 0x000009cb ==>sqn V$TRANSACTION.UBASQN
struct ktbituba, 8 bytes @52 ==>uba
ub4 kubadba @52 0x00c002d1 ==>dba
ub2 kubaseq @56 0x0375 ==>seq
ub1 kubarec @58 0x11 ==>V$TRANSACTION.UBAREC
ub2 ktbitflg @60 0xa000 (KTBFUPB, KTBFCOM)
union _ktbitun, 2 bytes @62
sb2 _ktbitfsc @62 0
ub2 _ktbitwrp @62 0x0000
ub4 ktbitbas @64 0x002fb364
struct ktbbhitl[1], 24 bytes @68 ==>事务槽2
struct ktbitxid, 8 bytes @68
ub2 kxidusn @68 0x0000
ub2 kxidslt @70 0x0000
ub4 kxidsqn @72 0x00000000
struct ktbituba, 8 bytes @76
ub4 kubadba @76 0x00000000
ub2 kubaseq @80 0x0000
ub1 kubarec @82 0x00
ub2 ktbitflg @84 0x0000 (NONE)
union _ktbitun, 2 bytes @86
sb2 _ktbitfsc @86 0
ub2 _ktbitwrp @86 0x0000
ub4 ktbitbas @88 0x00000000
数据层: