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  Oracle Tips by Burleson

Oracle Disk I/O Tuning

Chapter 5:

Viewing Information about ASM

As shown above, there are four partitions, sd1, sd2, sd3 and sd4. Next Step is to bind them as raw and change the ownership to oracle. We will take two disk partitions,




each of which is 4 GB in size.

[root@host-0002a dev]# raw /dev/raw/raw1 /dev/sdl3
/dev/raw/raw1:  bound to major 8, minor 179
[root@host-0002a dev]# raw /dev/raw/raw2 /dev/sdl4
/dev/raw/raw2:  bound to major 8, minor 180
> chown oracle:dba /dev/raw/raw1
> chown oracle:dba /dev/raw/raw2

Now let us focus on starting or creating an ASM instance. First set the ORACLE_HOME and ORACLE_SID variables. Prepare the initASM1.ora file. In our example, let us set SID of the ASM instance as


Shown below are the contents of the initASM1.ora

# created by TM 8/Apr/2004
*.background_dump_dest= '/app/oracle/admin/ASM1/bdump'
*.core_dump_dest=       '/app/oracle/admin/ASM1/cdump'
*.user_dump_dest=       '/app/oracle/admin/ASM1/udump'

The above text is an excerpt from:

Oracle Disk I/O Tuning
Disk IO Performance & Optimization for Oracle Databases



by Mike Ault

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