Oracle Database Oracle Clusterware Installation Guide for HP-UX

Configuring Storage for Oracle Clusterware Files on Raw Devices
■ Disabling Operating System Activation of Shared Volume Groups
■ Configuring Raw Disk Devices Without HP Serviceguard Extension
■ Configuring Shared Raw Logical Volumes With HP Serviceguard Extension
■ Create the Database Configuration Assistant Raw Device Mapping File
4.4.1 Identifying Required Raw Partitions for Clusterware Files
Table 4–3 lists the number and size of the raw partitions that you must configure for
Oracle Clusterware files.
Table 4–3 Raw Partitions Required for Oracle Clusterware Files
Number
2
(or 1, if you
have external
redundancy
support for
this file)
3
(or 1, if you
have external
redundancy
support for
this file)
4.4.2 Disabling Operating System Activation of Shared Volume Groups
To prevent the operating system from activating shared volume groups when it starts,
you must edit the /etc/lvmrc file on every node, as follows:
1. Create a backup copy of the /etc/lvmrc file:
# cp /etc/lvmrc /etc/lvmrc_orig
2. Open the /etc/lvmrc file in any text editor and search for the AUTO_VG_
ACTIVATE flag.
3. If necessary, change the value of the AUTO_VG_ACTIVATE flag to 0, to disable
automatic volume group activation, as follows:
AUTO_VG_ACTIVATE=0
Size for Each
Partition (MB) Purpose
256 Oracle Cluster Registry
Note: Create these raw partitions only once on the cluster.
If you create more than one database on the cluster, then
they all share the same Oracle Cluster Registry (OCR).
You should create two partitions: One for the OCR, and
one for a mirrored OCR.
If you are upgrading from Oracle9i release 2, then you can
continue to use the raw device that you used for the SRVM
configuration repository instead of creating this new raw
device.
256 Oracle Clusterware voting disks
Note: Create these raw partitions only once on the cluster.
If you create more than one database on the cluster, then
they all share the same Oracle Clusterware voting disk.
You should create three partitions: One for the voting disk,
and two for additional voting disks.
4. Search for the custom_vg_activation function in the /etc/lvmrc file.
5. Add vgchange commands to the function, as shown in the following example, to
automatically activate existing local volume groups:
custom_vg_activation()
{
# e.g. /sbin/vgchange -a y -s
# parallel_vg_sync "/dev/vg00 /dev/vg01"
# parallel_vg_sync "/dev/vg02 /dev/vg03"
Configuring Oracle Clusterware Storage 4-7