VG in shared mode in SG

[Jorge Prado_1]

In a configuration of 2 nodes in cluster MC/ServiceGuard, like I define a VG in shared mode (to install Oracle 9i - RAC).

Thank you.

[Manuel G]

Hi Jorge:

We have a similar config.:

2 nodes.
Oracle 8.
MC/Service Guard

But we don??t share VG, VG is assigned to the active node. This VG supports database tablespace files and Oracle software is on each node.

I Don??t know exactly what??s your problem, could you explain?

[Sebastian Galeski_1]

Hi
to cause vg to be in shared mode use:
vgchange -c y -S y vgops

regards seba

[Steve Lewis]

Make sure you have installed MC/lockmanager to share the disks with both nodes up under Serviceguard.

You must vgexport the volume group in shared mode + preview + mapfile, then vgimport the volume group on the second node before you can activate and use it in Oracle. It also helps to tar up the directory under /dev and un-tar it on the 2nd node if you have used non-default logical volume names.

Be careful with vgexport.

[Tom Geudens]

Hi,
Are you using MC/Lockmanager / Oracle Parallel Server ? If not (and I deduce from the fact that you say MC/ServiceGuard that you do not) do NOT try to define a VG in shared mode. Your filesystems will be corrupted before you know it ...

Regards,
Tom

[Paul Hawkins]

I think Oracle RAC is what used to be known as Oracle Parallel Server and there is a Special OPS version of serviceguard that facilitates the required mode of sharing - do you have ServiceGuard OPS Edition?

[Jorge Prado_1]

Hi,
Thanks to all for their help!
What I really want to make is to install Oracle Real Aplication Cluster (RAC) in a server hp9000 rp5470 with HP-UX 11.0 and Mc/SG 11.13.
but RAC demands that the VG is in shared way!
According to what I understood: should I install MC/lockmanager to make this?.
Thank you


Jorge Prado

[melvyn burnard]

You need to install ServiceGuard OPS Edition, which is different from standard ServiceGuard.
It gives you the ability to provide SHARED Vg access, not just Exclusive acces as in standard SG.

[Sebastian Galeski_1]

Hi
if You are going to install MC/SG OPS edition 11.13, i suggest You to install patch PHSS_26928 and latest patches for telnet and arpa transport.

regards seba