类似于sqlplus操作数据库一样，asmcmd工具可以实现对ASM的管理。
简单直观的看一下asmcmd带给我的功能。

1.连接到ASM实例
既然要管理ASM，必要要指定ASM实例，我们需要告知asmcmd的两件事情是：①.ORACLE_HOME环境变量是什么；②.所要连接到的ASM实例时什么。
然后直接使用“asmcmd”或“asmcmd -p”（-p选项可以在命令提示符中给出当前的路径信息）便可连接到对应的ASM。
RACDB1@rac1 /home/oracle$ export ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1
RACDB1@rac1 /home/oracle$ export ORACLE_SID=+ASM1
+ASM1@rac1 /home/oracle$ asmcmd
ASMCMD>
ASMCMD> exit
+ASM1@rac1 /home/oracle$ asmcmd -p
ASMCMD [+] >

2.获取asmcmd工具的帮助信息
ASMCMD [+] > help
        asmcmd [-p] [command]

        The environment variables ORACLE_HOME and ORACLE_SID determine the
        instance to which the program connects, and ASMCMD establishes a
        bequeath connection to it, in the same manner as a SQLPLUS / AS
        SYSDBA. The user must be a member of the SYSDBA group.

        Specifying the -p option allows the current directory to be displayed
        in the command prompt, like so:

        ASMCMD [+DATAFILE/ORCL/CONTROLFILE] >

        [command] specifies one of the following commands, along with its
        parameters.

        Type "help [command]" to get help on a specific ASMCMD command.

        commands:
        --------
        cd
        du
        find
        help
        ls
        lsct
        lsdg
        mkalias
        mkdir
        pwd
        rm
        rmalias

asmcmd工具提供了以上简单的操作ASM文件的命令。

3.将常用的命令做一个演示
ASMCMD [+] > ls
DATA/
FRA/
ASMCMD [+] > cd DATA
ASMCMD [+DATA] >
ASMCMD [+DATA] > cd ..
ASMCMD [+] > lsct
DB_Name   Status        Software_Version Compatible_version Instance_Name
RACDB     CONNECTED           10.2.0.1.0          10.2.0.1.0 RACDB1
RACDB     CONNECTED           10.2.0.1.0          10.2.0.1.0 RACDB1
ASMCMD [+] > lsdg
State    Type    Rebal Unbal Sector Block       AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Name
MOUNTED EXTERN N      N         512   4096 1048576      2047        7                0               7              0 DATA/
MOUNTED EXTERN N      N         512   4096 1048576      2047     1825                0            1825              0 FRA/

ASMCMD [+data/racdb] > pwd
+data/racdb
ASMCMD [+data/racdb] > ls
1_10_733447664.dbf
1_11_733447664.dbf
1_12_733447664.dbf
1_13_733447664.dbf
1_14_733447664.dbf
1_15_733447664.dbf
1_16_733447664.dbf
1_17_733447664.dbf
1_18_733447664.dbf
1_19_733447664.dbf
1_20_733447664.dbf
1_3_733447664.dbf
1_4_733447664.dbf
1_5_733447664.dbf
1_6_733447664.dbf
1_7_733447664.dbf
1_8_733447664.dbf
1_9_733447664.dbf
2_1_733447664.dbf
2_2_733447664.dbf
2_3_733447664.dbf
2_4_733447664.dbf
2_5_733447664.dbf
ARCHIVELOG/
CONTROLFILE/
DATAFILE/
ONLINELOG/
PARAMETERFILE/
TEMPFILE/
spfileRACDB.ora

4.小结
asmcmd工具提供的功能虽然不是很丰富，但对于相对闭塞的ASM来说，它是一个非常有效的操作工具。

Good luck.

secooler
10.11.06

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【asmcmd】使用asmcmd工具管理ASM

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