oracle 读取redo.log,oracle redo log 分析

Environment: OS: Ubuntu 10.10 Oracle: 11.1.0.6.0 Test table： test_user SQL desc test_user; Name Null? Type ----------------------------------------- -------- ---------------------------- ID NUMBER(38) NAME VARCHAR2(20) Current data: SQL s

Environment:

OS: Ubuntu 10.10

Oracle: 11.1.0.6.0

Test table： test_user

SQL> desc test_user;

Name Null? Type

----------------------------------------- -------- ----------------------------

ID NUMBER(38)

NAME VARCHAR2(20)

Current data:

SQL> select * from test_user;

ID NAME

---------- --------------------

1 aaa

2 bbb

3 ccc

Operation:

update test_user set name='ddd' where id=3;

commit;

Log File Dumps:

Symbolic dumps can be created for both online redo logs and archived redo logs using the following syntax: ALTER SYSTEM DUMP LOGFILE '';

For online redo logs the filename of the current redo log can be obtained using the following SQL: SELECT member FROM v$logfile

WHERE group# =

(

SELECT group# FROM v$log

WHERE status = 'CURRENT'

);

Output dump file can be found with this command:

SQL> SELECT VALUE FROM V$DIAG_INFO WHERE NAME = 'Default Trace File';

if ASM, use following command

SQL> oradebug setmypid;

Statement processed.

SQL> oradebug tracefile_name;

/u02/app/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_20221.trc

Find the detail log info we just operated in dump file:

1. find the object id of the table

SQL> select object_id from user_objects where object_name='TEST_USER';

OBJECT_ID

----------

713292. find log in dump file based on "object_id" and operation time.The redo infomation as follows, note the "OBJ:71329" and the timestap "12/21/2010

REDO RECORD - Thread:1 RBA: 0x000007.00012d3d.0010 LEN: 0x022c VLD: 0x0d

SCN: 0x0000.000fddbd SUBSCN: 1 12/21/2010 16:30:29

CHANGE #1 TYP:2 CLS: 1 AFN:4 DBA:0x01000195 OBJ:71329 SCN:0x0000.000fdd5e SEQ: 2 OP:11.19

KTB Redo

op: 0x01 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: F xid: 0x000a.005.0000035a uba: 0x00c00478.01ca.28

Array Update of 1 rows:

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 2 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 2 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 64 64 64

CHANGE #2 TYP:0 CLS:35 AFN:3 DBA:0x00c00099 OBJ:4294967295 SCN:0x0000.000fdd85 SEQ: 1 OP:5.2

ktudh redo: slt: 0x0005 sqn: 0x0000035a flg: 0x0012 siz: 184 fbi: 0

uba: 0x00c00478.01ca.28 pxid: 0x0000.000.00000000

CHANGE #3 TYP:0 CLS:35 AFN:3 DBA:0x00c00099 OBJ:4294967295 SCN:0x0000.000fddbd SEQ: 1 OP:5.4

ktucm redo: slt: 0x0005 sqn: 0x0000035a srt: 0 sta: 9 flg: 0x2 ktucf redo: uba: 0x00c00478.01ca.28 ext: 2 spc: 3182 fbi: 0

CHANGE #4 TYP:0 CLS:36 AFN:3 DBA:0x00c00478 OBJ:4294967295 SCN:0x0000.000fdd84 SEQ: 1 OP:5.1

ktudb redo: siz: 184 spc: 3368 flg: 0x0012 seq: 0x01ca rec: 0x28

xid: 0x000a.005.0000035a

ktubl redo: slt: 5 rci: 0 opc: 11.1 objn: 71329 objd: 71329 tsn: 4

Undo type: Regular undo Begin trans Last buffer split: No

Temp Object: No

Tablespace Undo: No

0x00000000 prev ctl uba: 0x00c00478.01ca.27

prev ctl max cmt scn: 0x0000.000fd7ee prev tx cmt scn: 0x0000.000fd7fa

txn start scn: 0x0000.000fdd5e logon user: 106 prev brb: 12584054 prev bcl: 0 BuExt idx: 0 flg2: 0

KDO undo record:

KTB Redo

op: 0x04 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: L itl: xid: 0x0004.020.000002ef uba: 0x00c0011b.02c1.0a

flg: C--- lkc: 0 scn: 0x0000.000f25f5

Array Update of 1 rows:

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 0 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 2 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 63 63 63

Redo Log Analysis:

Redo Records Structure:

Reo Record Header

REDO RECORD - Thread:1 RBA: 0x000007.00012d3d.0010 LEN: 0x022c VLD: 0x0d

SCN: 0x0000.000fddbd SUBSCN: 1 12/21/2010 16:30:29

Thread - redo log thread number

value: 1

RBA - redo byte address - address of redo record within redo log. Format is ..

value: 0x00007.00012d3d.0010

sequence_number: 0x00007

block_number: 0x00012d3d

offset: 0x10

LEN - length of redo record in bytes including header

value: 0x22c

VLD -

The VLD field determines the size of the redo record header. Known values are shown in the following table. These values may vary from one release to another.

Mnemonic

Value

Description

KCRVOID

0

The contents are not valid

KCRVALID

1

Includes change vectors

KCRDEPND

2

Includes commit SCN

KCRVOID

4

Includes dependent SCN

KCRNMARK

8

New SCN mark record. SCN allocated exactly at this point in the redo log by this instance

KCROMARK

16

Old SCN mark record. SCN allocated at or before this point in the redo. May be allocated by another instance

KCRORDER

32

New SCN was allocated to ensure redo for some block would be ordered by inc/seq# when redo sorted by SCN

value: 0x0d - 1101: "Includes change vectors" & "Includes dependent SCN" & "New SCN mark record. SCN allocated exactly at this point in the redo log by this instance"

SCN - system change number of redo record

value: 0x0000.000fddbd

SUBSCN: Unknown

value: 1

Timestamp

value: 12/21/2010 16:30:29

Change #1:

CHANGE #1 TYP:2 CLS: 1 AFN:4 DBA:0x01000195 OBJ:71329 SCN:0x0000.000fdd5e SEQ: 2 OP:11.19

KTB Redo

op: 0x01 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: F xid: 0x000a.005.0000035a uba: 0x00c00478.01ca.28

Array Update of 1 rows:

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 2 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 2 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 64 64 64

Change Header:

CHANGE #1 TYP:2 CLS: 1 AFN:4 DBA:0x01000195 OBJ:71329 SCN:0x0000.000fdd5e SEQ: 2 OP:11.19

TYP - change type

value: 2

CLS - class

Class

Description

1

Data Block

2

Sort Block

3

Deferred Undo Segment Blocks

4

Segment Header Block (Table)

5

Deferred Undo Segment Header Blocks

6

Free List Blocks

7

Extent Map Blocks

8

Space Management Bitmap Blocks

9

Space Management Index Blocks

10

Unused

11 + 2r

Segment Header for Undo Segment r

12 + 2r

Data Blocks for Undo Segment r

value: 1 - mean data block

AFN - Absolute File No

get file info using this sql statement:

SQL> select file_name, file_id from dba_data_files;

FILE_NAME

--------------------------------------------------------------------------------

FILE_ID

----------

/home/duanbb/oracle/oradata/mydb/users01.dbf

4

/home/duanbb/oracle/oradata/mydb/undotbs01.dbf

3

/home/duanbb/oracle/oradata/mydb/sysaux01.dbf

2

FILE_NAME

--------------------------------------------------------------------------------

FILE_ID

----------

/home/duanbb/oracle/oradata/mydb/system01.dbf

1

/home/duanbb/oracle/oradata/mydb/example01.dbf

5

value: 4 - means to "users01.dbf"

DBA - Database Block Address

value: 0x01000195

File No: 4

Block No: 0x195

OBJ - object

value: 71329

SCN - System change Number

value: 0x0000.000fdd5e

wrap: 0x0000

base: 0xfdd5e

SEQ - Sequence Number

value: 2

OP - Operation Code

Each change vector has an operation code. In Oracle 9.2 there were over 150 redo log operations; this number has grown significantly in Oracle 10.2 though the exact figure is not known. The operation code consists of a major number

and a minor number.

The major number describes the level in the kernel where the redo is generated. The following table shows common levels:

Level

Description

4

Block Cleanout

5

Transaction Layer (Undo)

10

Index Operation

11

Table Operation (DML)

13

Block Allocation

14

Extent Allocation

17

Backup Management

18

Online Backup

19

Direct Load

20

Transaction Metadata (LogMiner)

22

Space Management (ASSM)

23

Block Write (DBWR)

24

DDL Statement

For "Table Operation(DML)", description as follows:

Code

Mnemonic

Description

11.1

IUR

Undo

11.2

IRP

Insert Row Piece

11.3

DRP

Delete Row Piece

11.4

LKR

Lock Row

11.5

URP

Update Row Piece

11.6

ORP

Overflow Row Piece

11.7

MFC

11.8

CFA

11.9

CKI

11.10

SKL

11.11

QMI

Insert Row Array

11.12

QMD

Delete Row Array

11.14

DSC

11.16

LMN

11.17

LLB

11.19

19

Update Row Array

11.20

SHK

11.21

21

For "Transaction Layer (Undo)", description as follows:

Code

Mnemonic

Description

5.1

1

Undo Recorder

5.2

2

Undo Header

5.4

4

Commit

values: 11.19

KTB Redo

op: 0x01 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: F xid: 0x000a.005.0000035a uba: 0x00c00478.01ca.28

KTB Redo

KTB Redo records modifications to the transaction header of a block. The inverse operations are recorded in the undo segment

Each KTB Redo record has an operation type. Known codes include:

Numeric Code

Alphanumeric Code

0x1

F

0x2

C

0x3

Z

0x4

L

0x5

R

0x11

F

op: 0x01 - Numeric Code

ver: 0x01

op: F - Alphanumeric Code

xid: Transaction ID. Format is usn#.slot#.wrap# Components are:

usn#

Undo segment number

slot#

Slot number in undo segment

wrap#

Sequence number

value: 0x000a.005.0000035a

usn: 0x000a

slot: 0x005

wrap: 0x0000035a

uba:uba Undo block address. Format is dba.seq#.rec# Components are:

dba

Data block address of undo block

seq#

Sequence number of undo block

rec#

Record number within undo block

value: 0x00c00478.01ca.28

dba: 0x00c00478

seq: 0x01ca

rec: 0x28

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 2 ckix: 15

tabn - specifies the table number. For non-clustered tables this will always be 0

slot - specifies the slot number. Each block has an variable length array of slots. Each element in this array specifies the location of a row within the block. The first slot in the block is 0. In this example the row was written to the third

slot in the table (slot 2)

flag - Unknown

lock - probably set to 1 indicating a lock has been taken on the row header, what's the mean 2?

ckix - Unknown

ncol: 2 nnew: 1 size: 0

ncol - Number of columns in row piece

nnew - Number of changed columns in row piece

size - (Probably) change in size of row piece

KDO Op code: 21 row dependencies Disabled

Operation code: Update Row Piece

row dependencies - specifies whether row dependencies are disabled (default) or enabled for this table

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

xtype - transaction type. Can be XA, XR, CR or KDO_KDOM2. In this case the transaction type is KDO_KDOM2. This structure can potentially store an array of change vectors for an object.

flags - Unknown

bdba - block DBA. Data block address of this block

hdba - header DBA. Probably data block address of extent header

itli: 2 ispac: 0 maxfr: 4858

itli - specifes the ITL slot number of the transaction performing the operation. In this example the row is locked by the transaction in the first ITL slot.

ispac - Unknown

maxfr - Unknown

vect = 3

col 1: [ 3] 64 64 64

Update of column 1 (name) to 'ddd'

Change #2:

CHANGE #2 TYP:0 CLS:35 AFN:3 DBA:0x00c00099 OBJ:4294967295 SCN:0x0000.000fdd85 SEQ: 1 OP:5.2

ktudh redo: slt: 0x0005 sqn: 0x0000035a flg: 0x0012 siz: 184 fbi: 0

uba: 0x00c00478.01ca.28 pxid: 0x0000.000.00000000

Change header:

CHANGE #2 TYP:0 CLS:35 AFN:3 DBA:0x00c00099 OBJ:4294967295 SCN:0x0000.000fdd85 SEQ: 1 OP:5.2

TYP: 0

CLS: 35

AFN: 3 - refer to "undotbs01.dbf"

DBA: 0x00c00099

OBJ: 4294967259

SCN: 0x0000.000fdd85

SEQ: 1

OP: 5.2 - means "Undo header"

Change body:

ktudh redo: slt: 0x000f sqn: 0x00000312 flg: 0x0012 siz: 156 fbi: 0

uba: 0x00c005ba.02c2.19 pxid: 0x0000.000.00000000

Change #3:

CHANGE #3 TYP:0 CLS:35 AFN:3 DBA:0x00c00099 OBJ:4294967295 SCN:0x0000.000fddbd SEQ: 1 OP:5.4

ktucm redo: slt: 0x0005 sqn: 0x0000035a srt: 0 sta: 9 flg: 0x2 ktucf redo: uba: 0x00c00478.01ca.28 ext: 2 spc: 3182 fbi: 0

Change header:

CHANGE #3 TYP:0 CLS:23 AFN:3 DBA:0x00c00039 OBJ:4294967295 SCN:0x0000.000fddc3 SEQ: 1 OP:5.4

TYP: 0

CLS: 35

AFN: 3 - refer to "undotbs01.dbf"

DBA: 0x00c00039

OBJ: 4294967295

SCN: 0x0000.000fddc3

SEQ: 1

OP: 5.4 - means "Commit"

Change #4:

CHANGE #4 TYP:0 CLS:36 AFN:3 DBA:0x00c00478 OBJ:4294967295 SCN:0x0000.000fdd84 SEQ: 1 OP:5.1

ktudb redo: siz: 184 spc: 3368 flg: 0x0012 seq: 0x01ca rec: 0x28

xid: 0x000a.005.0000035a

ktubl redo: slt: 5 rci: 0 opc: 11.1 objn: 71329 objd: 71329 tsn: 4

Undo type: Regular undo Begin trans Last buffer split: No

Temp Object: No

Tablespace Undo: No

0x00000000 prev ctl uba: 0x00c00478.01ca.27

prev ctl max cmt scn: 0x0000.000fd7ee prev tx cmt scn: 0x0000.000fd7fa

txn start scn: 0x0000.000fdd5e logon user: 106 prev brb: 12584054 prev bcl: 0 BuExt idx: 0 flg2: 0

KDO undo record:

KTB Redo

op: 0x04 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: L itl: xid: 0x0004.020.000002ef uba: 0x00c0011b.02c1.0a

flg: C--- lkc: 0 scn: 0x0000.000f25f5

Array Update of 1 rows:

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 0 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 2 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 63 63 63

Change header:

CHANGE #4 TYP:0 CLS:24 AFN:3 DBA:0x00c005ba OBJ:4294967295 SCN:0x0000.000fdd8a SEQ: 3 OP:5.1

TYP: 0

CLS: 24

AFN: 3 - refer to "undotbs01.dbf"

DBA: 0x00c005ba

OBJ: 4294967295

SCN: 0x0000.000fdd8a

SEQ: 3

OP: 5.1 - means "Undo Recorder"

Change Body:

logon user: 106 - current user id, confirmed as follows:

SQL> select user,uid from dual;

USER UID

------------------------------ ----------

MYDB1 106

RollBack:

Opration:

SQL> select * from test_user;

ID NAME

---------- --------------------

1 aaa

2 222

3 111

SQL>

SQL> update test_user set name='999' where id=3;

1 row updated.

SQL> rollback;

Rollback complete.

Redo Log:

REDO RECORD - Thread:1 RBA: 0x00000b.0000e166.016c LEN: 0x01b8 VLD: 0x09

SCN: 0x0000.0011db22 SUBSCN: 1 12/27/2010 13:28:52

CHANGE #1 TYP:0 CLS: 1 AFN:4 DBA:0x01000195 OBJ:71329 SCN:0x0000.0011cbe9 SEQ: 1 OP:11.19

KTB Redo

op: 0x01 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: F xid: 0x0006.008.0000042c uba: 0x00c000d6.01ed.03

Array Update of 1 rows:

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 1 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 39 39 39

CHANGE #2 TYP:0 CLS:27 AFN:3 DBA:0x00c00059 OBJ:4294967295 SCN:0x0000.0011db19 SEQ: 2 OP:5.2

ktudh redo: slt: 0x0008 sqn: 0x0000042c flg: 0x0012 siz: 184 fbi: 0

uba: 0x00c000d6.01ed.03 pxid: 0x0000.000.00000000

CHANGE #3 TYP:0 CLS:28 AFN:3 DBA:0x00c000d6 OBJ:4294967295 SCN:0x0000.0011db19 SEQ: 1 OP:5.1

ktudb redo: siz: 184 spc: 7914 flg: 0x0012 seq: 0x01ed rec: 0x03

xid: 0x0006.008.0000042c

ktubl redo: slt: 8 rci: 0 opc: 11.1 objn: 71329 objd: 71329 tsn: 4

Undo type: Regular undo Begin trans Last buffer split: No

Temp Object: No

Tablespace Undo: No

0x00000000 prev ctl uba: 0x00c000d6.01ed.02

prev ctl max cmt scn: 0x0000.0011d79d prev tx cmt scn: 0x0000.0011d7bc

txn start scn: 0x0000.0011cbea logon user: 106 prev brb: 12583123 prev bcl: 0 BuExt idx: 0 flg2: 0

KDO undo record:

KTB Redo

op: 0x04 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: L itl: xid: 0x0001.001.00000350 uba: 0x00c00010.0228.1e

flg: C--- lkc: 0 scn: 0x0000.0011ca07

Array Update of 1 rows:

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 0 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 31 31 31

REDO RECORD - Thread:1 RBA: 0x00000b.0000e167.0134 LEN: 0x00e0 VLD: 0x01

SCN: 0x0000.0011db22 SUBSCN: 2 12/27/2010 13:28:52

CHANGE #1 TYP:0 CLS: 1 AFN:4 DBA:0x01000195 OBJ:71329 SCN:0x0000.0011db22 SEQ: 1 OP:11.19

KTB Redo

op: 0x04 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: L itl: xid: 0x0001.001.00000350 uba: 0x00c00010.0228.1e

flg: C--- lkc: 0 scn: 0x0000.0011ca07

Array Update of 1 rows:

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 0 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XRxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 31 31 31

CHANGE #2 TYP:0 CLS:27 AFN:3 DBA:0x00c00059 OBJ:4294967295 SCN:0x0000.0011db22 SEQ: 1 OP:5.11

ktubu redo: slt: 8 rci: 0 opc: 11.1 objn: 71329 objd: 71329 tsn: 4

Undo type: Regular undo Undo type: User undo done Begin trans Last buffer split: No

Tablespace Undo: No

0x00000000

BuExt idx: 0flg2: 0

REDO RECORD - Thread:1 RBA: 0x00000b.0000e168.0024 LEN: 0x0050 VLD: 0x01

SCN: 0x0000.0011db23 SUBSCN: 1 12/27/2010 13:28:52

CHANGE #1 TYP:0 CLS:27 AFN:3 DBA:0x00c00059 OBJ:4294967295 SCN:0x0000.0011db22 SEQ: 2 OP:5.4

ktucm redo: slt: 0x0008 sqn: 0x0000042c srt: 0 sta: 9 flg: 0x4

rolled back transaction

Update Multiple rows:

Operation:

SQL> select * from test_user;

ID NAME

---------- --------------------

1 aaa

2 222

3 111

SQL>

SQL> update test_user set name='333';

3 rows updated.

Redo Log:

REDO RECORD - Thread:1 RBA: 0x00000b.0001031f.013c LEN: 0x0250 VLD: 0x09

SCN: 0x0000.0011ea91 SUBSCN: 1 12/27/2010 15:05:47

CHANGE #1 TYP:0 CLS: 1 AFN:4 DBA:0x01000195 OBJ:71329 SCN:0x0000.0011db22 SEQ: 2 OP:11.19

KTB Redo

op: 0x01 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: F xid: 0x0001.01b.00000355 uba: 0x00c000f4.022b.15

Array Update of 3 rows:

tabn: 0 slot: 0(0x0) flag: 0x2c lock: 1 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 33 33 33

tabn: 0 slot: 1(0x1) flag: 0x2c lock: 1 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 33 33 33

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 1 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 33 33 33

CHANGE #2 TYP:0 CLS:17 AFN:3 DBA:0x00c00009 OBJ:4294967295 SCN:0x0000.0011ea48 SEQ: 2 OP:5.2

ktudh redo: slt: 0x001b sqn: 0x00000355 flg: 0x0012 siz: 260 fbi: 0

uba: 0x00c000f4.022b.15 pxid: 0x0000.000.00000000

CHANGE #3 TYP:0 CLS:18 AFN:3 DBA:0x00c000f4 OBJ:4294967295 SCN:0x0000.0011ea48 SEQ: 15 OP:5.1

ktudb redo: siz: 260 spc: 5766 flg: 0x0012 seq: 0x022b rec: 0x15

xid: 0x0001.01b.00000355

ktubl redo: slt: 27 rci: 0 opc: 11.1 objn: 71329 objd: 71329 tsn: 4

Undo type: Regular undo Begin trans Last buffer split: No

Temp Object: No

Tablespace Undo: No

0x00000000 prev ctl uba: 0x00c000f4.022b.06

prev ctl max cmt scn: 0x0000.0011e534 prev tx cmt scn: 0x0000.0011e57b

txn start scn: 0x0000.0011ea91 logon user: 106 prev brb: 12583064 prev bcl: 0 BuExt idx: 0 flg2: 0

KDO undo record:

KTB Redo

op: 0x04 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: L itl: xid: 0x0001.001.00000350 uba: 0x00c00010.0228.1e

flg: C--- lkc: 0 scn: 0x0000.0011ca07

Array Update of 3 rows:

tabn: 0 slot: 0(0x0) flag: 0x2c lock: 0 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 61 61 61

tabn: 0 slot: 1(0x1) flag: 0x2c lock: 0 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 32 32 32

tabn: 0 slot: 2(0x2) flag: 0x2c lock: 0 ckix: 15

ncol: 2 nnew: 1 size: 0

KDO Op code: 21 row dependencies Disabled

xtype: XAxtype KDO_KDOM2 flags: 0x00000080 bdba: 0x01000195 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

vect = 3

col 1: [ 3] 31 31 31

Multi Operation One Commit:

operation:

SQL> select * from test_user;

ID NAME

---------- --------------------

1 111

2 222

3 333

SQL> update test_user set name='aaa' where id=1;

1 row updated.

SQL> update test_user set name='bbb' where id=2;

1 row updated.

SQL> commit;

Commit complete.

Redo Log:

REDO RECORD - Thread:1 RBA: 0x000019.00001837.0010 LEN: 0x0224 VLD: 0x05

SCN: 0x0000.00178fd4 SUBSCN: 1 01/06/2011 16:11:12

CHANGE #1 TYP:0 CLS:17 AFN:3 DBA:0x00c00009 OBJ:4294967295 SCN:0x0000.00178f8c SEQ: 1 OP:5.2

ktudh redo: slt: 0x0007 sqn: 0x0000042d flg: 0x0012 siz: 184 fbi: 0

uba: 0x00c00a7d.029a.15 pxid: 0x0000.000.00000000

CHANGE #2 TYP:0 CLS:18 AFN:3 DBA:0x00c00a7d OBJ:4294967295 SCN:0x0000.00178f8b SEQ: 3 OP:5.1

ktudb redo: siz: 184 spc: 5486 flg: 0x0012 seq: 0x029a rec: 0x15

xid: 0x0001.007.0000042d

ktubl redo: slt: 7 rci: 0 opc: 11.1 objn: 71329 objd: 71828 tsn: 4

Undo type: Regular undo Begin trans Last buffer split: No

Temp Object: No

Tablespace Undo: No

0x00000000 prev ctl uba: 0x00c00a7d.029a.12

prev ctl max cmt scn: 0x0000.001789db prev tx cmt scn: 0x0000.001789eb

txn start scn: 0xffff.ffffffff logon user: 106 prev brb: 12585591 prev bcl: 0 BuExt idx: 0 flg2: 0

KDO undo record:

KTB Redo

op: 0x04 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: L itl: xid: 0x0005.013.00000551 uba: 0x00c00e6f.01ff.0e

flg: C--- lkc: 0 scn: 0x0000.0017875c

KDO Op code: URP row dependencies Disabled

xtype: XA flags: 0x00000000 bdba: 0x01000198 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

tabn: 0 slot: 0(0x0) flag: 0x2c lock: 0 ckix: 0

ncol: 2 nnew: 1 size: 0

col 1: [ 3] 31 31 31

CHANGE #3 TYP:2 CLS: 1 AFN:4 DBA:0x01000198 OBJ:71828 SCN:0x0000.00178ead SEQ: 1 OP:11.5

KTB Redo

op: 0x11 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: F xid: 0x0001.007.0000042d uba: 0x00c00a7d.029a.15

Block cleanout record, scn: 0x0000.00178fd4 ver: 0x01 opt: 0x02, entries follow...

itli: 2 flg: 2 scn: 0x0000.00178ead

KDO Op code: URP row dependencies Disabled

xtype: XA flags: 0x00000000 bdba: 0x01000198 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

tabn: 0 slot: 0(0x0) flag: 0x2c lock: 1 ckix: 0

ncol: 2 nnew: 1 size: 0

col 1: [ 3] 61 61 61

CHANGE #4 MEDIA RECOVERY MARKER SCN:0x0000.00000000 SEQ: 0 OP:5.20

session number = 113

serial number = 2027

transaction name =

version 185599488

audit sessionid 203728

REDO RECORD - Thread:1 RBA: 0x000019.00001943.0010 LEN: 0x0140 VLD: 0x05

SCN: 0x0000.0017902a SUBSCN: 1 01/06/2011 16:11:30

CHANGE #1 TYP:0 CLS:18 AFN:3 DBA:0x00c00a7d OBJ:4294967295 SCN:0x0000.00178fd4 SEQ: 1 OP:5.1

ktudb redo: siz: 116 spc: 5300 flg: 0x0022 seq: 0x029a rec: 0x16

xid: 0x0001.007.0000042d

ktubu redo: slt: 7 rci: 21 opc: 11.1 objn: 71329 objd: 71828 tsn: 4

Undo type: Regular undo Undo type: Last buffer split: No

Tablespace Undo: No

0x00000000

KDO undo record:

KTB Redo

op: 0x02 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: C uba: 0x00c00a7d.029a.15

KDO Op code: URP row dependencies Disabled

xtype: XA flags: 0x00000000 bdba: 0x01000198 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

tabn: 0 slot: 1(0x1) flag: 0x2c lock: 0 ckix: 0

ncol: 2 nnew: 1 size: 0

col 1: [ 3] 32 32 32

CHANGE #2 TYP:0 CLS: 1 AFN:4 DBA:0x01000198 OBJ:71828 SCN:0x0000.00178fd4 SEQ: 1 OP:11.5

KTB Redo

op: 0x02 ver: 0x01

compat bit: 4 (post-11) padding: 1

op: C uba: 0x00c00a7d.029a.16

KDO Op code: URP row dependencies Disabled

xtype: XA flags: 0x00000000 bdba: 0x01000198 hdba: 0x01000193

itli: 1 ispac: 0 maxfr: 4858

tabn: 0 slot: 1(0x1) flag: 0x2c lock: 1 ckix: 0

ncol: 2 nnew: 1 size: 0

col 1: [ 3] 62 62 62

REDO RECORD - Thread:1 RBA: 0x000019.0000194c.0010 LEN: 0x00bc VLD: 0x05

SCN: 0x0000.00179033 SUBSCN: 1 01/06/2011 16:11:37

CHANGE #1 TYP:0 CLS:17 AFN:3 DBA:0x00c00009 OBJ:4294967295 SCN:0x0000.00178fd4 SEQ: 1 OP:5.4

ktucm redo: slt: 0x0007 sqn: 0x0000042d srt: 0 sta: 9 flg: 0x2 ktucf redo: uba: 0x00c00a7d.029a.16 ext: 2 spc: 5182 fbi: 0

CHANGE #2 MEDIA RECOVERY MARKER SCN:0x0000.00000000 SEQ: 0 OP:24.11

KRV CMT marker usn: 0x1 start scn: 0x0000.00178fd4

Reference:

http://www.juliandyke.com/Internals/Redo/Redo.html

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