Service guard extention for RAC

[Babak Haghtalab]

HI
I have installed HP UX Mission critical in two RP servers and I am going to install ORACLE RAC in this enviroment.Now he question is : Is that mandatory to use service guard extention for RAC in such a enviroment ? Can we configure RAC without using Service guard ?
What are the options that SG extentiong for RAC provides ?
Thanks in advance

[Julio Yamawaki · Accepted solution]

Hi,

I you are going to install Oracle RAC 10g, you can install without SGeRAC.
SGeRAC will manage all hardware redundancy, like LAN cards.
If you use SGeRAC, Serviceguard will manage all cluster operations, like startup, shutdown and failover, in this case, you will use Serviceguard commands.
If you decide to use only 10g RAC, Oracle RAC will manager all cluster operations and, in this case, you will use RAC commands do manage cluster operations.
I think, cluster operation with SGeRAC is more reliable, because of hardware failover, but it costs a little more...

Regards,

[Steven E. Protter]

Shalom,

SG extensions and add on's are time savers. It is always possible to write your own scripts.

RAC can be a bit complex and saving some configuration time can be very helpful. No mandatory at all.

SEP

[Babak Haghtalab]

Thanks for your help,I also check in some oracle documents and it was mentioned that it depends to the type of storage we are using,Since we cannot use CRS on an ASM volume (that is managed with oracle) so we have to use raw disk or LVM shared disk .
For raw disk we won't need SG but for share LVM we have to use serviceguard for CRS.
Thanks in advance