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@xxxxxxxxxxx> 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!
>>
>>Ben
>>_______________________________________________
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>>CentOS@xxxxxxxxxx
>>http://lists.centos.org/mailman/listinfo/centos
>>
>>
>>
>
>
>--
>Leonard Isham, CISSP
>Ostendo non ostento.
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>
>
>
