similar to: getting metric collection error on 10g oem for our rac databases

Wim, Thanks for your prompt response on this. The tpmC figures look very impressive, and tpmC is read intensive. I had already read note 236679.1 "Comparing Performance Between RAW IO vs OCFS vs EXT2/3" which I guess is the article to which you are referring; it made me suspect that the poor performance was due to the lack of an OS IO cache but I wasn't sure. The database is

Wim, Thanks for your prompt response on this. The tpmC figures look very impressive, and tpmC is read intensive. I had already read note 236679.1 "Comparing Performance Between RAW IO vs OCFS vs EXT2/3" which I guess is the article to which you are referring; it made me suspect that the poor performance was due to the lack of an OS IO cache but I wasn't sure. The database is

Hi, I am currently involved in a project with E-Business 11i.9. For the production enviroment, ct. wants to implement Load Balance and Fail Over - both middle tier and database tier, the last with RAC. As E11i creates lots of tablespaces, the best way seems to be OCFS. We installed & configured OCFS partitions. The next step was to install E11i multi tier, single instance - already

Dear Experts, One of our client wants to use OCFS for their 9i RAC(2 node) on RHEL3 and also use GFS on the nodes. Would there be any issues using OCFS for Oracle 9i RAC and using GFS for failing over things like print services on the same node? Has this been tested? I know these are competing products and OCFS 2.0is not an option now for the client. They need GFS for their custom apps. Any ideas

Hello All We currently use rsync for various jobs at our company. We are now looking at using it to create an offsite synchronized copy of an Oracle 10g RAC archive logs area. The source area is on Oracle OCFS file system. The OCFS filesystem requires all reads/writes to be performed with the O_DIRECT option, thus bypassing cache. Oracle provide an updated coreutils package which includes the

Hello, I've successfully configured RAC on Redhat AS, with external firewire + ocfs. The whole process was done without any errors and have created the database. (Thanks to Wim Coekaerts useful article). But now, how do I actually use it? If I have a client making a connection, to which node do I connect? Are there also any recommended procedures to test RAC's capabilities? Thanks.

I know this isn't entirely OCFS related, but out of curiosity, but what experience have you had running RAC on RedHat or SuSE? I know Oracle supports both, but is one a better choice than the other? Seems to me like Oracle has been working more with RedHat. Does anyone know what Oracle mostly uses internally? What distro do you guys develop on? Would there be any drawbacks for choosing to

Hi, My RAC installation (Redhat AS 2.1, OCFS, External Firewire) went okay to the point of creating the database. But when i wanted to startup the database: - sqlplus /nolog - startup I get the error: Feature not enabled: Real Application Clusters. Did i do something wrong? I still can't figure this thing out yet. Thanks. Regards, Faisal

I''m considering using DTrace to monitor performance of Oracle 10g RAC version. Is their any existing provider for that? thanks -- This message posted from opensolaris.org

Hello again. Our production cluster has begun experiencing some vicious slowdowns that may (or may not) be related to the filesystems. When the problem occurs, the load average on the servers jumps up to 30 or higher. Usually one node will climb while the other drops, then they will switch places a few minutes later. At one point, we had one node's load average up over 300. Our site

I have been a user of OCFS2 for quite some time now (2 years or so) and a user of Oracle RAC for several years as well. My usage of these two is completely independent though, the cluster filesystem is for application level usage (web servers, etc.) only because RAC can manage its own shared storage directly. And that brings me to my observation/question... I keep seeing a lot of messages

I have tryied change the disk bus to SCSI, add a SCSI controller whose model is virtio-scsi, still can't setup the RAC instance. I tried to use windows 2008 Failover Cluster feature to setup a a Failover Cluster instead, and I can't find any cluster disk to share between two nodes. So when Failover Cluster is setup, I can't add any Cluster disk to the Failover Cluster. Have I missed

On 08/08/2013 03:54 AM, Timon Wang wrote: > Anybody have idea on it? > > I tried to set the disk as raw format, and retried the setup process, > but still can't get through. Caveat: I know nothing in particular about Oracle RAC, but... Assuming that RAC uses something like SCSI reservations in order to share the disk, I would guess it doesn't like the disk being on the IDE

Anybody have idea on it? I tried to set the disk as raw format, and retried the setup process, but still can't get through. On Fri, Aug 2, 2013 at 1:58 PM, Timon Wang <timonwst@gmail.com> wrote: > We wan't to setup two Oracle instance and make RAC work on them. > Both VM are setup based on libvirt + KVM, we use a lvm lun which > formated in qcow2 format and set the

Thanks, i have tried virtio-scsi and LSI SCSI controller, by using a local file or a LUN as disk. Both raw and qcow2 disk format are be verified, but no way to make windows Failover Cluster and Oracle RAC work correctly. Actually, Oracle RAC and Windows Failover Cluster needs "share" storage like iscsi disk and fc disk to work correctly. In iscsi situation, we can use ip network for

Is the order important when installing ocfs2 and Oracle RAC? If you have an existing RAC installation and you want to use ocfs2 for shared files but not for the OCR or Voting Disks, do you need to reinstall the Oracle Clusterware after installing OCFS2? Regards, Nick Donatone -------------- next part -------------- An HTML attachment was scrubbed... URL:

We wan't to setup two Oracle instance and make RAC work on them. Both VM are setup based on libvirt + KVM, we use a lvm lun which formated in qcow2 format and set the shareable properties in the disk driver like this: <disk type='block' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source

On Sat, Aug 10, 2013 at 11:14:39AM +0800, Timon Wang wrote: > I have tryied change the disk bus to SCSI, add a SCSI controller whose > model is virtio-scsi, still can't setup the RAC instance. > > I tried to use windows 2008 Failover Cluster feature to setup a a > Failover Cluster instead, and I can't find any cluster disk to share > between two nodes. So when Failover

>and tpmC is read intensive. I got my benchmarks mixed up, TPC-H, of course, is read intensive

>and tpmC is read intensive. I got my benchmarks mixed up, TPC-H, of course, is read intensive