Will,
I have exactly the same problem and question. Oracle point to Veritas and
Veritas say use volume manager to encapsulate the disks.
I agree it is an ownership/permissions issue. I tried changing both appropriately
on the /dev/vx/rdmp/c* devices but when I tried to add tehm to ASM I keep
getting ownersip/permission errors.
If I reference one path or the other with /dev/rdsk/c* it works fine.
If you have an answer to this already I would be excremely grateful to hear
it. If I find an answer I will post it.
Jay

Did you set the owner to "oracle" ?

If you did and there is still a perm problem, log in as oracle and test what
hpappens when you do a 'dd if=/dev/vx/rdmp/cxxx of=/dev/null'. You should
get an error.

If so, then it is probably a perm issue on "/dev/vx" and/or "/dev/vx/dev/vx"
add a o+r and o+x to those directories and see what happens when you do
the 'dd' as oracle user.

bv

Jay,

The only possible solution I have is to use MPxIO to do the failover for
the disks. MPxIO created 1 device entry for each disk that ASM can see.
I have not fully tested this configuration and do not know if oracle will
be able to handle the large device names generated by MPxIO. I have no indication
Veritas DMP can be used with ASM.

Will

"Jay Joshi" wrote:
>
>Will,
>I have exactly the same problem and question. Oracle point to Veritas and
>Veritas say use volume manager to encapsulate the disks.
>I agree it is an ownership/permissions issue. I tried changing both appropriately
>on the /dev/vx/rdmp/c* devices but when I tried to add tehm to ASM I keep
>getting ownersip/permission errors.
>If I reference one path or the other with /dev/rdsk/c* it works fine.
>If you have an answer to this already I would be excremely grateful to hear
>it. If I find an answer I will post it.
>Jay

Any progress on this? I have the exact same issue, and not just for ASM.
If you try
to use Oracle with raw devices you get the same problem. It can't do any
I/O to the
/dev/vx/rdmp/c* files even if you chmod/chown them.

Eric

"Will Robinson" wrote:
>
>
>Jay,
>
>The only possible solution I have is to use MPxIO to do the failover for
>the disks. MPxIO created 1 device entry for each disk that ASM can see.
> I have not fully tested this configuration and do not know if oracle will
>be able to handle the large device names generated by MPxIO. I have no
indication
>Veritas DMP can be used with ASM.
>
>Will
>
>"Jay Joshi" wrote:
>>
>>Will,
>>I have exactly the same problem and question. Oracle point to Veritas
and
>>Veritas say use volume manager to encapsulate the disks.
>>I agree it is an ownership/permissions issue. I tried changing both appropriately
>>on the /dev/vx/rdmp/c* devices but when I tried to add tehm to ASM I keep
>>getting ownersip/permission errors.
>>If I reference one path or the other with /dev/rdsk/c* it works fine.
>>If you have an answer to this already I would be excremely grateful to
hear
>>it. If I find an answer I will post it.
>>Jay
>

Create a diskgroup, add the desired disk
Create a volume with max. size
Use /dev/vx/rdsk// as RAW DMP device
with us it works...


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