Shared Volume Group and Oracle RAC

[Omar Alvi_1]

Hi,

I've configured two clusters on RP7410 systems. However I'm facing some issues on these ... being recently acquainted with service guard. Some concepts also I needed to clear

- With an up and running cluster I could see the shared VG on both systems.

- After rebooting one system the backage was transferred successfully, but the shared vg did not activate, why?

- Now, when both systems are up, I can activate the vg only in exclusive mode for a single node, why?

The following sequence I follow

vgchange -c y -S y vgora
vgchange -a s vgora

Second command returns the following

vgchage: Failed to get vg ownership, 251 closing conn.
vgchage: failed to get volume group ownership -Function is not available (251)

This is one major issue ... the other is with installing oracle RAC

- From oracle user I cannot run any of the cluster administration commands, command hangs. Oracle should be able to access these command?

- The GUI for ORacle 9i installtion skips to single instance installation (this is while the vg is activated in exclusive mode). It doesn't show the windows for cluster oracle installtion.

Will really appreciate any assistance on any otf these issues.

Thanks and Regards,

-Alvi

[G. Vrijhoeven · Accepted solution]

- With an up and running cluster I could see the shared VG on both systems.

...

- After rebooting one system the backage was transferred successfully, but the shared vg did not activate, why?

Only vg's mentioned in the cluster ascii file get the cluster awaire bit turned on at boottime. And vgchange -a e command only works on vgs that are cluster awaire. Put ths vg's in the ascii file and do a cmcheckconf && cmapplyconf


- Now, when both systems are up, I can activate the vg only in exclusive mode for a single node, why?

RW only possible on one site ( -a = activate e = exclusive)

The following sequence I follow

vgchange -c y -S y vgora
vgchange -a s vgora

Second command returns the following

vgchage: Failed to get vg ownership, 251 closing conn.
vgchage: failed to get volume group ownership -Function is not available (251)


can not help you with that...

This is one major issue ... the other is with installing oracle RAC

- From oracle user I cannot run any of the cluster administration commands, command hangs. Oracle should be able to access these command?

Service guard commands are operated by root, not oracle. May be sudo is a option.

I do not know the answer them all, but may be this will get you started.

Regards,

Gideon