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 at 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 at 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 > >>_______________________________________________ > >>CentOS mailing list > >>CentOS at centos.org > >>http://lists.centos.org/mailman/listinfo/centos > >> > >> > >> > > > > > >-- > >Leonard Isham, CISSP > >Ostendo non ostento. > >_______________________________________________ > >CentOS mailing list > >CentOS at centos.org > >http://lists.centos.org/mailman/listinfo/centos > > > > > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos