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Linux kernel parameters

Hi all,

We are frequent memory issues where the utlisation has shot drastically and freezes the system.

Whats the ideal size to be maintained for the below parameters.Are these parameters the culprits for high utlisation when everythign at the SAP and DB looks fine.

/proc/sys/kernel/shmall = 5242880

/proc/sys/kernel/shmmax = 23136829430

red hat release 4 and oracle 10g.Thanks.

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  • Posted on May 19, 2011 at 11:06 AM

    > We are frequent memory issues where the utlisation has shot drastically and freezes the system.

    Before changing any kernel parameters I'd try ot figure why the system is runnign out of memory.

    Check your database memory parameters as well as the instance memory parameters.

    Markus

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  • Posted on May 19, 2011 at 03:29 PM

    hello,

    Check note...

    941735 SAP memory management for 64-bit Linux systems

    regards,

    John Feely

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  • Posted on May 20, 2011 at 02:21 PM

    Hello,

    Do you have this parameter set?

    STD implementation (es/implementation=std)

    regards,

    John Feely

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