"cannot create communication semaphore" - Error

[Former Member]

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

[Former Member]

hi,

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

will check that note now.

[Former Member]

please check sap note 628131 for os parameters

BR

Ivan

[Former Member]

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