datamgr page allocation failure

[Rich Bishop]

On Wed, Jun 10, 2009 at 12:26:48AM -0500, Matt Domsch wrote:
> On Tue, Jun 09, 2009 at 10:44:54AM -0400, Rich Bishop wrote:
> > We have a number of m905 blades which have been working fine for about 9 months
> > now. We use Dell's omreport to monitor them via nagios. The machines are running
> > RHEL4 64bit with the latest version of omsa (5.5).
> > 
> > Over the weekend our DBAs upgraded Oracle on some of these blades to 10.2.0.4
> > (from some older version of Oracle 10). Since this upgrade I'm seeing lots of
> > page allocation failures datamgr3:
> > 
> > Jun  8 08:29:27 bluebird kernel: dsm_sa_datamgr3: page allocation failure. order:4, mode:0xd1
> 
> An order 4 allocation means the driver is trying to allocate 2^4 (16)
> consecutive pages of RAM (thus 64KB) for an operation, but the kernel
> memory is fragmented ot the point where that many consecutive pages
> are not available.
> 
> Was there a kernel change during the Oracle upgrade?


Thanks for the response. There were no kernel changes. Is there anything I can
do to debug this or prevent it from happening?

Thanks,

Rich