oracle實驗記錄 (dump undo3)
SQL> select * from test;
TESTCOL
--------------------
ed
ed
SQL> select dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_nu
mber(rowid) blk# from test;
FILE# BLK#
---------- ----------
1 56802
1 56802
SQL>
SQL> update test set testcol='d';
已更新2行。
SQL> commit;
提交完成。
SQL> alter system dump datafile 1 block 56802;
系統已更改。
SQL> update test set testcol='de';
已更新2行。
SQL> commit;
提交完成。
SQL> alter system dump datafile 1 block 56802;
系統已更改。
SQL> update test set testcol='ded';
已更新2行。
SQL> alter system dump datafile 1 block 56802;
系統已更改。
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SQL>
Object id on Block? Y
seg/obj: 0xd1fb csc: 0x00.427fca itc: 2 flg: O typ: 1 - DATA
fsl: 0 fnx: 0x0 ver: 0x01
Itl Xid Uba Flag Lck Scn/Fsc
0x01 0x0009.01a.0000025e 0x00800031.0175.2e C--- 0 scn 0x0000.00427fac
0x02 0x0007.028.0000025f 0x008008a2.02cd.41 --U- 2 fsc 0x0000.00428542
data_block_dump,data header at 0x648025c
===============
tsiz: 0x1fa0
hsiz: 0x1a
pbl: 0x0648025c
bdba: 0x0040dde2
76543210
flag=--------
ntab=1
nrow=4
frre=0
fsbo=0x1a
fseo=0x1eba
avsp=0x1f74
tosp=0x1f74
0xe:pti[0] nrow=4 offs=0
0x12:pri[0] sfll=1
0x14:pri[1] sfll=-1
0x16:pri[2] offs=0x1ebf
0x18:pri[3] offs=0x1eba
block_row_dump:
tab 0, row 2, @0x1ebf
tl: 5 fb: --H-FL-- lb: 0x2 cc: 1 第一次dump
col 0: [ 1] 64
tab 0, row 3, @0x1eba
tl: 5 fb: --H-FL-- lb: 0x2 cc: 1
col 0: [ 1] 64
end_of_block_dump
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Block header dump: 0x0040dde2
Object id on Block? Y
seg/obj: 0xd1fb csc: 0x00.42854f itc: 2 flg: O typ: 1 - DATA
fsl: 0 fnx: 0x0 ver: 0x01
Itl Xid Uba Flag Lck Scn/Fsc
0x01 0x0006.023.000002c3 0x008002ff.01b6.20 --U- 2 fsc 0x0000.00428550~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~第2次dump
0x02 0x0007.028.0000025f 0x008008a2.02cd.41 C--- 0 scn 0x0000.00428542~~~~~~~~~~~~原來U變C了
data_block_dump,data header at 0x648025c
===============
tsiz: 0x1fa0
hsiz: 0x1a
pbl: 0x0648025c
bdba: 0x0040dde2
76543210
flag=--------
ntab=1
nrow=4
frre=0
fsbo=0x1a
fseo=0x1eae
avsp=0x1f74
tosp=0x1f74
0xe:pti[0] nrow=4 offs=0
0x12:pri[0] sfll=1
0x14:pri[1] sfll=-1
0x16:pri[2] offs=0x1eb4
0x18:pri[3] offs=0x1eae
block_row_dump:
tab 0, row 2, @0x1eb4
tl: 6 fb: --H-FL-- lb: 0x1 cc: 1
col 0: [ 2] 64 65
tab 0, row 3, @0x1eae
tl: 6 fb: --H-FL-- lb: 0x1 cc: 1
col 0: [ 2] 64 65
end_of_block_dump
End dump data blocks tsn: 0 file#: 1 minblk 56802 maxblk 56802
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Itl Xid Uba Flag Lck Scn/Fsc
0x01 0x0006.023.000002c3 0x008002ff.01b6.20 C--- 0 scn 0x0000.00428550
0x02 0x000a.02f.00000253 0x0080033f.03e1.16 ---- 2 fsc 0x0000.00000000~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~第3次DUMP 0x008008a2.02cd.41 這條uba換出去了
data_block_dump,data header at 0x648025c
===============
tsiz: 0x1fa0
hsiz: 0x1a
pbl: 0x0648025c
bdba: 0x0040dde2
76543210
flag=--------
ntab=1
nrow=4
frre=0
fsbo=0x1a
fseo=0x1ea0
avsp=0x1f74
tosp=0x1f74
0xe:pti[0] nrow=4 offs=0
0x12:pri[0] sfll=1
0x14:pri[1] sfll=-1
0x16:pri[2] offs=0x1ea7
0x18:pri[3] offs=0x1ea0
block_row_dump:
tab 0, row 2, @0x1ea7
tl: 7 fb: --H-FL-- lb: 0x2 cc: 1
col 0: [ 3] 64 65 64
tab 0, row 3, @0x1ea0
tl: 7 fb: --H-FL-- lb: 0x2 cc: 1
col 0: [ 3] 64 65 64
end_of_block_dump
End dump data blocks tsn: 0 file#: 1 minblk 56802 maxblk 56802
~~~~~~~~~~~~~~~~~~~~~~~~~~~`0x0080033f.03e1.16 ~~看看這條最新的uba~~~~~~~~~~~~~~~~~~~根據.16在第16條記錄
SQL> execute :file#:=dbms_utility.data_block_address_file(to_number('80033f','xx
xxxxxx'));
PL/SQL 過程已成功完成。
SQL> execute :blk#:=dbms_utility.data_block_address_block(to_number('80033f','xx
xxxxxx'));
PL/SQL 過程已成功完成。
SQL> print file#
FILE#
----------
2
SQL> print blk#
BLK#
----------
831
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~dump 2,831
* Rec #0x15 slt: 0x2f objn: 53755(0x0000d1fb) objd: 53755 tblspc: 0(0x00000000)
* Layer: 11 (Row) opc: 1 rci 0x00
Undo type: Regular undo Begin trans Last buffer split: No
Temp Object: No
Tablespace Undo: No
rdba: 0x00000000
*-----------------------------
uba: 0x0080033f.03e1.12 ctl max scn: 0x0000.00427f25 prv tx scn: 0x0000.00427f2c
txn start scn: scn: 0x0000.00428554 logon user: 0
prev brb: 8389435 prev bcl: 0
KDO undo record:
KTB Redo
op: 0x04 ver: 0x01
op: L itl: xid: 0x0007.028.0000025f uba: 0x008008a2.02cd.41~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~問題有思路了現在的塊了有被換出去的uba 0x008008a2.02cd.41
flg: C--- lkc: 0 scn: 0x0000.00428542
KDO Op code: URP row dependencies Disabled
xtype: XA flags: 0x00000000 bdba: 0x0040dde2 hdba: 0x0040dde1
itli: 2 ispac: 0 maxfr: 4863
tabn: 0 slot: 2(0x2) flag: 0x2c lock: 0 ckix: 0
ncol: 1 nnew: 1 size: -1
col 0: [ 2] 64 65
*-----------------------------
* Rec #0x16 slt: 0x2f objn: 53755(0x0000d1fb) objd: 53755 tblspc: 0(0x00000000)
* Layer: 11 (Row) opc: 1 rci 0x15 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~上一個位置~~~~~~~~~~~~~~~~
Undo type: Regular undo Last buffer split: No
Temp Object: No
Tablespace Undo: No
rdba: 0x00000000
*-----------------------------
KDO undo record:
KTB Redo
op: 0x02 ver: 0x01
op: C uba: 0x0080033f.03e1.15
KDO Op code: URP row dependencies Disabled
xtype: XA flags: 0x00000000 bdba: 0x0040dde2 hdba: 0x0040dde1
itli: 2 ispac: 0 maxfr: 4863
tabn: 0 slot: 3(0x3) flag: 0x2c lock: 0 ckix: 0
ncol: 1 nnew: 1 size: -1
col 0: [ 2] 64 65
End dump data blocks tsn: 1 file#: 2 minblk 831 maxblk 831
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