Understanding ASM (5) ASM tools

[Oracle @ localhost ~] $ Asmcmd help = y

Commands:

--------

Cd

Du

Find

Help

Ls

Lsct

Lsdg

Mkalias

Mkdir

Pwd

Rm

Rmalias

① List Directory Information

ASMCMD> ls

DATA/

ASMCMD> ls-al

State Type Rebal Unbal Name

Mounted normal n data/

② Alias

ASMCMD> ls-al

Type Redund Striped Time Sys Name

Onlinelog mirror fine nov 04 19:00:00 Y none => group_4.256.798491239

ASMCMD> mkalias group_4.256.798491239 redo_log_group_3.log

ASMCMD> ls-al

Type Redund Striped Time Sys Name

Onlinelog mirror fine nov 04 19:00:00 Y + DATA/ORCL/ONLINELOG/redo_log_group_3.log => group_4.256.798491239

N redo_log_group_3.log => + DATA/ORCL/ONLINELOG/group_4.256.798491239

③ View space

ASMCMD> du

Used_MB pai_used_mb

89 179

ASMCMD> lsdg

State Type Rebal Unbal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Name

Mounted normal n 512 4096 1048576 701 358 101 0 DATA/

④ Search for files

ASMCMD> find + DATA redo *

+ DATA/ORCL/ONLINELOG/redo_log_group_3.log

⑤ Display the connection between ASM and database instances

ASMCMD> lsct

⑥ Delete an object

ASMCMD> rm + DATA/ORCL/ONLINELOG/redo_log_group_3.log

Oracle video tutorial follow: http://u.youku.com/user_video/id_UMzAzMjkxMjE2.html