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author's profile photo Former Member
Former Member

"cannot create communication semaphore" - Error

hi,

We recently re-installed SAP and done a database recovery on my R3 system. We are running SAP 6.40 with MAXDB 7.5.0.032.

This is running on Linux.

My problem is since the recovery i get this message on my system log as well as when trying to use MaxDB gui "cannot create communication semaphore" if i stopsap, then i can access the database via the gui without a problem but once SAP is running i cannot access the database to do backups or add volumes.

thanks

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  • author's profile photo Former Member
    Former Member
    Posted on Jul 21, 2009 at 07:18 AM

    seems to be some problem with the shared memory.

    See if you would like to use ipcm or may be reboot of the sever will work

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  • author's profile photo Former Member
    Former Member
    Posted on Jul 21, 2009 at 06:40 PM

    please check sap note 628131 for os parameters

    BR

    Ivan

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  • author's profile photo Former Member
    Former Member
    Posted on Jul 22, 2009 at 09:58 AM

    hi,

    we rebooted a few times since then but it still does not help.

    will check that note now.

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