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I want to increase the kernel.shmmax parameter in a online machine with a Oracle Database. I have seen that I can change editing the /etc/sysctl.conf kernel.shmmax=3112311231 and then execute this ...
  1. #1
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    Increase shmmax parameter with Oracle database online

    I want to increase the kernel.shmmax parameter in a online machine with a Oracle Database.

    I have seen that I can change editing the /etc/sysctl.conf

    kernel.shmmax=3112311231


    and then execute this command

    sysctl -p /etc/sysctl.conf


    Is this correct?. Can there be any problem with the database if it is open?

    The OS is Red Hat Enterprise Linux AS release 4 Update 4.


    Thanks

  2. #2
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    May 2005
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    To check your current shared memory run "cat /proc/sys/kernel/shmmax". You can either echo another number into the /proc/sys/kernel/shmmax "echo number > /proc/sys/kernel/shmmax" or "sysctl -w kernel.shmmax=number". None of these are permanent, and can be used for testing.

    I do not know if these will harm anything or not on a running database.

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