Getting Started Guide

26 Preparing Shared Storage
Fix permissions of Oracle ASM disks on boot (y/n)
[y]: y
NOTE: In this setup the default user is set to grid and the default group is set to
asmadmin . Ensure that the oracle user is part of the asmadmin group. You can
do so by using the dell-validated and dell-oracle-utilities rpms.
The boot time parameters of the Oracle ASM library are configured and a
sequential text interface configuration method is displayed.
2 Set the ORACLEASM_SCANORDER parameter in
/etc/sysconfig/oracleasm
NOTE: When setting the ORACELASM_SCANORDER to a value, specify a
common string associated with your device mapper pseudo device name.
For example, if all the device mapper device had a prefix string of the word
"asm", (/dev/mapper/asm-ocr1, /dev/mapper/asm-ocr2), populate the
ORACLEASM_SCANORDER parameter as: ORACLEASM_SCANORDER="asm".
This would ensure that oracleasm will scan these disks first.
3 Set the ORACLEASM_SCANEXCLUDE parameter in
/etc/sysconfig/oracleasm to exclude non-multipath devices.
For example:
ORACLEASM_SCANEXCLUDE=<disks to exclude>
NOTE: If we wanted to ensure to exclude our single path disks within /dev/
such as sda and sdb, our ORACLEASM_SCANEXCLUDE string would look like:
ORACLEASM_SCANEXCLUDE="sda sdb"
4 To create ASM disks that can be managed and used for Oracle database
installation, run the following command as root:
/usr/sbin/oracleasm createdisk DISKNAME
/dev/mapper/diskpartition
NOTE: The fields DISKNAME and /dev/mapper/diskpartition should be
substituted with the appropriate names for your environment respectively.
NOTE: It is highly recommended to have all of your Oracle related disks to be
within Oracle ASM. This includes your OCR disks, voting disks, database
disks, and flashback recovery disks.
5 Verify the presence of the disks in the ASM library by running the
following command as root:
/usr/sbin/oracleasm listdisks
Book.book Page 26 Tuesday, July 26, 2011 11:33 PM