[oracle@jumper udump]$ sqlplus "/ as sysdba"

SQL*Plus: Release 9.2.0.3.0 - Production on Tue Aug 31 17:01:27 2004

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.3.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.3.0 - Production

SQL> select rowid,deptno,dname,loc from scott.dept;

ROWID                  DEPTNO DNAME          LOC
------------------ ---------- -------------- -------------
AAADZ7AABAAAGK6AAA         10 ACCOUNTING     NEW YORK
AAADZ7AABAAAGK6AAB         20 RESEARCH       DALLAS
AAADZ7AABAAAGK6AAC         30 SALES          CHICAGO
AAADZ7AABAAAGK6AAD         40 OPERATIONS     BOSTON

SQL> select file_id,block_id,blocks from dba_extents where segment_name='DEPT';

   FILE_ID   BLOCK_ID     BLOCKS
---------- ---------- ----------
         1      25273          8

SQL> alter system dump datafile 1 block min 25273 block max 25274;

System altered.

SQL> !
[oracle@jumper udump]$ ls -l
total 4
-rw-r-----   1 oracle   dba          3142 Aug 31 17:04 hsjf_ora_13674.trc
[oracle@jumper udump]$ more hsjf_ora_13674.trc
/opt/oracle/admin/hsjf/udump/hsjf_ora_13674.trc
Oracle9i Enterprise Edition Release 9.2.0.3.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.3.0 - Production
ORACLE_HOME = /opt/oracle/product/9.2.0
System name:    Linux
Node name:      jumper.hurray.com.cn
Release:        2.4.18-14
Version:        #1 Wed Sep 4 13:35:50 EDT 2002
Machine:        i686
Instance name: hsjf
Redo thread mounted by this instance: 1
Oracle process number: 9
Unix process pid: 13674, image: oracle@jumper.hurray.com.cn (TNS V1-V3)

*** 2004-08-31 17:04:27.820
*** SESSION ID:(8.3523) 2004-08-31 17:04:27.819
Start dump data blocks tsn: 0 file#: 1 minblk 25273 maxblk 25274
buffer tsn: 0 rdba: 0x004062b9 (1/25273)
scn: 0x0000.0057c70d seq: 0x01 flg: 0x04 tail: 0xc70d1001
frmt: 0x02 chkval: 0x12e3 type: 0x10=DATA SEGMENT HEADER - UNLIMITED
  Extent Control Header
  -----------------------------------------------------------------
  Extent Header:: spare1: 0      spare2: 0      #extents: 1      #blocks: 7    
                  last map  0x00000000  #maps: 0      offset: 4128 
      Highwater::  0x004062bb  ext#: 0      blk#: 1      ext size: 7    
  #blocks in seg. hdr's freelists: 1    
  #blocks below: 1    
  mapblk  0x00000000  offset: 0    
                   Unlocked
     Map Header:: next  0x00000000  #extents: 1    obj#: 13947  flag: 0x40000000
  Extent Map
  -----------------------------------------------------------------
   0x004062ba  length: 7    
 
  nfl = 1, nfb = 1 typ = 1 nxf = 0 ccnt = 1
  SEG LST:: flg: USED   lhd: 0x004062ba ltl: 0x004062ba
buffer tsn: 0 rdba: 0x004062ba (1/25274)
scn: 0x0000.0131909b seq: 0x07 flg: 0x04 tail: 0x909b0607
frmt: 0x02 chkval: 0xa8e7 type: 0x06=trans data
Block header dump:  0x004062ba
 Object id on Block? Y
 seg/obj: 0x367b  csc: 0x00.131909a  itc: 2  flg: O  typ: 1 - DATA
     fsl: 0  fnx: 0x0 ver: 0x01
 
 Itl           Xid                  Uba         Flag  Lck        Scn/Fsc
0x01   0x0001.02a.000003f3  0x0080000b.0188.08  C---    0  scn 0x0000.0057c70e
0x02   0x0000.000.00000000  0x00000000.0000.00  ----    0  fsc 0x0000.00000000
 
data_block_dump,data header at 0xadb505c
===============
tsiz: 0x1fa0
hsiz: 0x1a
pbl: 0x0adb505c
bdba: 0x004062ba
     76543210
flag=--------
ntab=1
nrow=4
frre=-1
fsbo=0x1a
fseo=0x1f44
avsp=0x1f2a
tosp=0x1f2a
0xe:pti[0]      nrow=4  offs=0
0x12:pri[0]     offs=0x1f86
0x14:pri[1]     offs=0x1f70
0x16:pri[2]     offs=0x1f5c
0x18:pri[3]     offs=0x1f44
block_row_dump:
tab 0, row 0, @0x1f86
tl: 26 fb: --H-FL-- lb: 0x0  cc: 3
col  0: [ 2]  c1 0b
col  1: [10]  41 43 43 4f 55 4e 54 49 4e 47
col  2: [ 8]  4e 45 57 20 59 4f 52 4b
tab 0, row 1, @0x1f70
tl: 22 fb: --H-FL-- lb: 0x0  cc: 3
col  0: [ 2]  c1 15
col  1: [ 8]  52 45 53 45 41 52 43 48
col  2: [ 6]  44 41 4c 4c 41 53
tab 0, row 2, @0x1f5c
tl: 20 fb: --H-FL-- lb: 0x0  cc: 3
col  0: [ 2]  c1 1f
col  1: [ 5]  53 41 4c 45 53
col  2: [ 7]  43 48 49 43 41 47 4f
tab 0, row 3, @0x1f44
tl: 24 fb: --H-FL-- lb: 0x0  cc: 3
col  0: [ 2]  c1 29
col  1: [10]  4f 50 45 52 41 54 49 4f 4e 53
col  2: [ 6]  42 4f 53 54 4f 4e
end_of_block_dump
End dump data blocks tsn: 0 file#: 1 minblk 25273 maxblk 25274