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Oracle RAC installation problem

Luis Ramírez V.
Occasional Advisor

Oracle RAC installation problem

We have an Integrity 2660 with HP-UX. It has two HBA connected to a SAN repository, each HBA in a separate fiber switch. When we try to install the Oracle RAC, we don't know what device to use. The command ioscan -funC disk returns the next output:

disk 6 0/2/1/ sdisk CLAIMED DEVICE HP HSV200 /dev/dsk/c10t0d1 /dev/rdsk/c10t0d1
disk 7 0/2/1/ sdisk CLAIMED DEVICE HP HSV200 /dev/dsk/c12t0d1 /dev/rdsk/c12t0d1
disk 8 0/4/1/ sdisk CLAIMED DEVICE HP HSV200 /dev/dsk/c8t0d1 /dev/rdsk/c8t0d1
disk 9 0/4/1/ sdisk CLAIMED DEVICE HP HSV200 /dev/dsk/c6t0d1 /dev/rdsk/c6t0d1

Because of the SAN, the same disk is shown four times. Maybe there's a command that show us the disk only one time in order to use that in Oracle Clusterware.

Thanks for all your help

Luis Ramirez
Hein van den Heuvel
Honored Contributor

Re: Oracle RAC installation problem

HP - Tru64 and HP OpenVMS make the mutliple access paths transparent.
HP-UX needs help from layered software.
The classic solution for this is "Secure Path"

Google for: +"Secure Path" +hpux
If you want to check this forum first, then add:

Storage view point Starting point:

An other good google query could be (amazingly...) "+oracle +san +hpux +clusterware"

The best Oracle refenence for this area is probably in the Database Storage Administrators Guide: "ASM and Multipathing"

You'd think that the Clusterware installation Guide for HP-UX would help, but while it mentions multi-pathing, it does not really help much:

Hope this helps some,
Hein van den Heuvel (at gmail dot com)
HvdH Performance Consulting