Object id on Block Y
seg/obj: 0x11ed0 csc: 0x00.f2e95 itc: 3 flg: E typ: 1 - DATA
brn: 0 bdba: 0x10000e8 ver: 0x01 opc: 0
inc: 0 exflg: 0
Itl Xid Uba Flag Lck Scn/Fsc
0x01 0xffff.000.00000000 0x00000000.0000.00 C--- 0 scn 0x0000.000f2e95
0x02 0x0013.000.00000004 0x01400102.0001.04 ---- 2 fsc 0x000a.00000000
0x03 0x0000.000.00000000 0x00000000.0000.00 ---- 0 fsc 0x0000.00000000
bdba: 0x010000ec
data_block_dump,data header at 0x2b5f5d4e6a7c
..........省略一部分..........
tab 0, row 41, @0x38f
tl: 42 fb: --H-FL-- lb: 0x2 cc: 4
col 0: [ 4] c3 02 10 05
col 1: [ 4] c3 02 13 03
col 2: [23]
44 42 4d 53 5f 46 45 41 54 55 52 45 5f 52 4d 41 4e 5f 42 5a 49 50 32
col 3: [ 4] 56 49 45 57
tab 0, row 42, @0x365
tl: 42 fb: --H-FL-- lb: 0x2 cc: 4
col 0: [ 4] c3 02 10 06
col 1: [ 4] c3 02 13 04
col 2: [23]
.........省略trace 文件中后面的输出.............
（3）分析undo 段头dump文件
Undo Segment: _SYSSMU19$ (19)
********************************************************************************
...............省略一部分..............
TRN CTL:: seq: 0x0001 chd: 0x0001 ctl: 0x0021 inc: 0x00000000 nfb: 0x0000
mgc: 0xb000 xts: 0x0068 flg: 0x0001 opt: 2147483646 (0x7ffffffe)
uba: 0x01400102.0001.01 scn: 0x0000.000e61e6
Version: 0x01
FREE BLOCK POOL::
uba: 0x00000000.0000.00 ext: 0x0 spc: 0x0
uba: 0x00000000.0000.00 ext: 0x0 spc: 0x0
uba: 0x00000000.0000.00 ext: 0x0 spc: 0x0
uba: 0x00000000.0000.00 ext: 0x0 spc: 0x0
TRN TBL::
index state cflags wrap# uel scn dba parent-xid nub stmt_num cmt
------------------------------------------------------------------------------------------------
0x00 10 0x80 0x0004 0x0000 0x0000.00000000 0x01400102 0x0000.000.00000000 0x00000001 0x00000000 0
0x01 9 0x00 0x0003 0x0002 0x0000.000e61e6 0x00000000 0x0000.000.00000000 0x00000000 0x00000000 0
0x02 9 0x00 0x0003 0x0003 0x0000.000e61e6 0x00000000 0x0000.000.00000000 0x00000000 0x00000000 0
0x03 9 0x00 0x0003 0x0004 0x0000.000e61e6 0x00000000 0x0000.000.00000000 0x00000000 0x00000000 0
0x04 9 0x00 0x0003 0x0005 0x0000.000e61e6 0x00000000 0x0000.000.00000000 0x00000000 0x00000000 0
0x05 9 0x00 0x0003 0x0006 0x0000.000e61e6 0x00000000 0x0000.000.00000000 0x00000000 0x00000000 0
.........省略trace 文件中后面的输出.............
undo段头上的事务表没有发生改变
（4）分析undo block dump文件
UNDO BLK:
xid: 0x0013.000.00000004 seq: 0x1 cnt: 0x4 irb: 0x4 icl: 0x0 flg: 0x0000
Rec Offset Rec Offset Rec Offset Rec Offset Rec Offset
---------------------------------------------------------------------------
0x01 0x1f58 0x02 0x1ef4 0x03 0x1e98 0x04 0x1e34
*-----------------------------
* Rec #0x1 slt: 0x00 objn: 73424(0x00011ed0) objd: 73424 tblspc: 4(0x00000004)
* Layer: 11 (Row) opc: 1 rci 0x00
Undo type: Regular undo Begin trans Last buffer split: No
Temp Object: No
Tablespace Undo: No
rdba: 0x00000000Ext idx: 0
flg2: 0
*-----------------------------
uba: 0x00000000.0000.00 ctl max scn: 0x0000.000e61e6 prv tx scn: 0x0000.000e61e6
txn start scn: scn: 0x0000.00000000 logon user: 85
prev brb: 0 prev bcl: 0
KDO undo record:
KTB Redo
o