How stable is Oracle Linux 4.5?

I have installed Oracle Linux kernel-smp-2.6.9-55.0.0.0.2.EL.
it crashes once a week. Does anyone else experience the same problem?
Upon install, installer automatically installed another kernel
kernel-hugemem-2.6.9-55.0.0.0.2.EL with only 2G of memory.
The machine runs 3 instances of Oracle 9.2.0.8 and they die from time to time also, without any error in alert log or system log.
Probably, machine is a junk, just reqular PC.
So, does anyone runs the combo for months without any problems?
Thanks.

Hi,
No log data to analyze.As you mentioned that the machine just shipped with 2G memory.It must be experienced low memory pressure.You can set vm.lower_zone_protection=100 and monitor the machine.
Regards
Terry
Message was edited by:
terry.liu

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    <font color="blue">
    <font size="2">
    If you experience problems with these instructions, please add only a couple of lines with a link to your own thread explaining the details. I spent some time and effort to create this how-to in the hope that it will be useful. If you would like to use these instructions for your own blog or website, please include a link to this source.
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    </font>
    </font>
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Dude.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   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