data_path data

lob_path /odu/data/lob

charset_name AL32UTF8

ncharset_name AL16UTF16

output_format text

lob_storage infile

clob_byte_order big

trace_level 1

delimiter |

unload_deleted no

file_header_offset 0

is_tru64 no

record_row_addr no

convert_clob_charset yes

use_scanned_lob yes

trim_scanned_blob yes

lob_switch_dir_rows 20000

db_block_checksum yes

db_block_checking yes

rdba_file_bits 10

compatible 10

load config file ‘config.txt’ successful

loading default asm disk file ……

grp# dsk# bsize ausize disksize diskname groupname path

—- —- —– —— ——– ————— ————— ——————————————–

1 0 4096 1024K 9000 DATA_0000 DATA /dev/sda3

1 1 4096 1024K 9000 DATA_0001 DATA /dev/sda5

1 2 4096 1024K 9000 DATA_0002 DATA /dev/sda6

2 0 4096 1024K 9000 RECO_0000 RECO /dev/sda7

2 1 4096 1024K 7288 RECO_0001 RECO /dev/sda8

load asm disk file ‘asmdisk.txt’ successful

loading default control file ……

ts# fn rfn bsize blocks bf offset filename

—- —- —- —– ——– — —— ——————————————–

load control file ‘control.txt’ successful

loading dictionary data……done

loading scanned data……done

ODU> asmcmd

Entering asmcmd module.

ASMCMD> ls

Current directory:

Disk Group

————————————

DATA

RECO

ASMCMD> cd +DATA

Current directory: +DATA

ASMCMD> ls

Current directory: +DATA

Name

—————————————-

ASM

ORA11G

ASMCMD> cd ORA11G

Current directory: +DATA/ORA11G

ASMCMD> ls

Current directory: +DATA/ORA11G

Name

—————————————-

DATAFILE

CONTROLFILE

ONLINELOG

TEMPFILE

PARAMETERFILE

spfileora11g.ora => +DATA.265.747311071

ASMCMD> cd DATAFILE

Current directory: +DATA/ORA11G/DATAFILE

可以看到，当前的第259号（这个259是ASM的internal file number）文件名称为+DATA/ORA11G/DATAFILE / USERS.259.747310451：

ASMCMD> ls

Current directory: +DATA/ORA11G/DATAFILE

Name

—————————————-

SYSTEM.256.747310449

SYSAUX.257.747310449

UNDOTBS1.258.747310451

USERS.259.747310451

MYTEST.266.761050749

GAOZCINDEX.267.770299335

GAOZCINDEX1 => +DATA.267.770299335

GAOZCDATA.268.770299347

GAOZCDATA1 => +DATA.268.770299347

现在我们用AMDU把这个文件给抽出来，注意现在这个文件所在的磁盘组DATA还是处于unmount状态。

用AMDU抽取数据文件的语法非常简单，只需要指定磁盘组所在的设备文件名称（可以用*号模糊匹配），以及磁盘组的名称和待抽取的数据文件号（这里的数据文件号是指ASM的internal file number）就可以了：

[root@bspdev odu]# /u01/app/oracle/bin/amdu -diskstring ‘/dev/sda*’ -extract ‘DATA.259′

amdu_2012_02_23_11_21_34/

进入上述目录，可以看到抽取出的第259号文件DATA_259.f已经生成：