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now there are 8 disks
of 10 Giga bytes each. These are free devices available for use
by the ASM setup.
DBCA can be used for
these files in the
new database or add them using SQL*Plus commands.
DISKGROUP dskgrp01 NORMAL REDUNDANCY
FAILGROUP fgcontrol01 DISK ‘/dev/raw/raw1’,
FAILGROUP fgcontrol02 DISK ‘/dev/raw/raw2’ ;
These files will show up in the init.ora
file of the ASM instance as ASM_DISKSTRING='/dev/raw/raw*'.
Automatic Storage Management (ASM) features of Oracle Database
10g. The salient points are as follows.
Automatic Storage Mechanism (ASM)
will create and manage the underlying files for database
For the ASM architecture, Oracle
Database 10g utilizes a separate smaller database instances
installed in a separate oracle home, created during database set
ASM instance manages the metadata
that is needed to make ASM files available to regular database
ASM instance and database
instances have access to a common set of disks called disk
ASM instance is expected to
always be up and running on the host.