Sorry, yeah, I guess I could call RedHat support, since we're paying them. :) It's just that I've always been so impressed with the knowlege and helpfulness of the folks here that I thought I'd give it a shot before turning somewhere else.
I'll see if I can get my boss to allow me to update to the latest OS patches and BIOS to see if this will fix stuff.
Ben
Craig White wrote:
you are aware of the support resources available for RHEL and Oracle right? There also is a nahant-list which is Red Hat's mail list for RHEL-4
Just wanting to point out the perhaps more logical places to seek assistance though I am sure that the CentOS team is flattered by your asking for help on this list.
Craig
On Tue, 2006-03-28 at 08:16 -0600, Benjamin J. Weiss wrote:
Sorry, it's an HP/Compaq ML-530. It didn't do this until I changed the OS, so I doubt that it's a BIOS issue.
Thanks!
Leonard Isham wrote:
On 3/28/06, Benjamin J. Weiss benjamin@birdvet.org wrote:
Hey, y'all! :)
I've got an RHEL-4 server (yep, I know it's not CentOS, but hey we gotta send some money RH's way to keep CentOS up and going! ) that's running Oracle 10g. This same hardware worked just fine for over a year running RHEL-AS-2.1 and Oracle 9i. Now we're getting spontaneous reboots when running oracle processes that eat up a bunch of resources. I don't know where to go from here.
I didn't see a mention of the hardware type, but some systems have a BIOS setting to reboot if the hardware doesn't detecet any "activity" for a period of time. Check for that setting and disable that feature. This may solve the issue. If not at least let you see the crash if there is one.
It's got dual hyper-threading processors set to hyperthreading mode, and I understand that the 2.6 kernel used to have HT issues, but I thought that'd been solved. The kernel we're running is: 2.6.9-22.0.2.ELsmp (yeah, not the latest, I haven't had a chance lately to test and update the patches).
I think the kernel settings are correct, what with 4gigs of ram:
[root@sibrsdbs etc]# cat sysctl.conf # Kernel sysctl configuration file for Red Hat Linux # # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and # sysctl.conf(5) for more details.
# Controls IP packet forwarding net.ipv4.ip_forward = 0
# Controls source route verification net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing net.ipv4.conf.default.accept_source_route = 0
# Controls the System Request debugging functionality of the kernel kernel.sysrq = 0
# Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1
# oracle settings kernel.shmall = 2097152 kernel.shmmax = 2147483648 kernel.shmmni = 4096 kernel.sem = 250 32000 100 128 #fs.file-max = 65536 net.ipv4.ip_local_port_range = 1024 65000 net.core.rmem_default=262144 net.core.wmem_default=262144 net.core.rmem_max=262144 net.core.wmem_max=262144
I don't know how to look for the core dump, if there was one. I don't see anything named 'core' in the /root directory.
I'm sucking wind, any suggestions?
Thanks!
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