ASM Creation (Windows)

You can follow this steps and create a ASM diskgroup on your local machine and play with it ( Windows)

1) Creating a dummy disks

F:\>mkdir asmdisks
F:\>cd asmdisks
F:\asmdisks>asmtool -create F:\asmdisks\ disk1 512
F:\asmdisks>asmtool -create F:\asmdisks\ disk2 512
F:\asmdisks>asmtool -create F:\asmdisks\ disk3 512

Now you have 3 disks(dummy) of 512mb each which can be used to create a ASM disk group.

2) Create ASM instance

a) Configure Cluster Synchronization Servie

C:\>c:\oracle\product\ 10.2.0\db_ 1\BIN\localconfi g add

Step 1: stopping local CSS stack
Step 2: deleting OCR repository
Step 3: creating new OCR repository
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'ap\arogyaa' , privgrp ''..
Operation successful.
Step 4: creating new CSS service
successfully created local CSS service
successfully reset location of CSS setup

b) Create Init pfile
Open notepad edit the following parameters and save file as "C:\oracle\product\ 10.2.0\db_ 1\database\ init+ASM. ora"
INSTANCE_TYPE= ASM
DB_UNIQUE_NAME= +ASM
LARGE_POOL_SIZE= 8M
ASM_DISKSTRING= 'F:\asmdisks\ *'
_ASM_ALLOW_ONLY_ RAW_DISKS= FALSE

c) Create service and password file
oradim will create an ASM instance and start it automatically.
c:\> orapwd file=C:\oracle\ product\10. 2.0\db_1\ database\ PWD+ASM.ora password=asm
c:\> oradim -NEW -ASMSID +ASM -STARTMODE auto

3) Create ASM disk group
a) Create asm disk group
SQL> select path, mount_status from v$asm_disk;
PATH MOUNT_S
------------ --------- --------- --
F:\ASMDISKS\ DISK1 CLOSED
F:\ASMDISKS\ DISK3 CLOSED
F:\ASMDISKS\ DISK2 CLOSED

SQL> create diskgroup data external redundancy disk
2 'F:\ASMDISKS\ DISK1',
3 'F:\ASMDISKS\ DISK2',
4* 'F:\ASMDISKS\ DISK3';
Diskgroup created.

b) Change PFILE to SPFILE, Add ASM Diskgroup parameter and your all set to go and use ASM.
SQL> create spfile from pfile;
SQL> startup force;
SQL> alter system set asm_diskgroups= data scope=spfile;
SQL> startup force;
SQL> startup force
ASM instance started
Total System Global Area 83886080 bytes
Fixed Size 1247420 bytes
Variable Size 57472836 bytes
ASM Cache 25165824 bytes
ASM diskgroups mounted
SQL>
Now you can go ahead and use your DBCA and create a database and on step 6 of 13, you can use Automatic Storage management as your Filesystem.