Re: IpcMemoryCreate: shmget failed (Permission denied) - Mailing list pgsql-novice

--- Theuns <ftvo@webmail.co.za> wrote:
> Hi Jeff, thanks for the reply.
>
> I tried it and it said :
>
> ipcclean: You still have a postmaster running.
>
> Although I can not see any session files in /tmp
> directory usually
> associated with an actvie postmaster...

I don't know what you are expecting to find in /tmp.
My example RH PostgreSQL install has nothing there
either.  Were you thinking of the postmaster.pid file?
 On my system, that is in the $PGDATA directory, i.e.
/home/pgsql/data.

Assuming that "ps" shows no active postmaster process,
just delete the postmaster.pid file and try "ipcclean"
again.  Then try to start the postmaster again.

You may want to try using "pg_ctl" to start and stop
the postmaster, that is what it is designed for.  "man
pg_ctl" will tell you what you need to know.

>
> On Fri, 6 Jun 2003 16:34:31 -0700 (PDT) Jeff
> Eckermann
> (jeff_eckermann@yahoo.com) wrote:
>
> >Try running "ipcclean".  ISTR that working for me
> in a
> >similar situation.
> >
> >--- Theuns <ftvo@webmail.co.za> wrote:
> >> When trying to start the postmaster after
> >> installation, I get this
> >> error :
> >>
> >> $ postmaster -D /usr/local/pgsql/data
> >> IpcMemoryCreate: shmget failed (Permission
> denied)
> >> key=5432001,
> >> size=1104896, permission=600
> >> This type of error is usually caused by an
> improper
> >> shared memory or System V IPC semaphore
> >> configuration.
> >> For more information, see the FAQ and
> >> platform-specific
> >> FAQ's in the source directory pgsql/doc or on our
> >> web site at http://www.postgresql.org.
> >> FATAL 1:  ShmemCreate: cannot create region
> >>
> >> Checking the share memory status:
> >>
> >> $ ipcs -l
> >>
> >> ------ Shared Memory Limits --------
> >> max number of segments = 1024
> >> max seg size (kbytes) = 32768
> >> max total shared memory (kbytes) = 134217728
> >> min seg size (bytes) = 1
> >>
> >> Cgecking the shmmax configuration value :
> >>
> >> $ vi /proc/sys/kernel/shmmax
> >>
> >> 33554432
> >>
> >> Check hard disk space :
> >>
> >> $ df -vk
> >> Filesystem           1k-blocks      Used
> Available
> >> Use% Mounted on
> >> /dev/hda6              4719972   4407656
> 72548
> >> 99% /
> >> /dev/hda1                69973      2476
> 63884
> >> 4% /boot
> >>
> >> I can not access the postrgresql mail list
> archives
> >> or subscribe to a
> >> list due to the hard disk failures they had
> >> encountered recently.
> >>
> >> I'm working on a Redhat Linux 7.0 (Guinness)
> >> Kernel 2.2.16-22 on an i686
> >>
> >> with the latest PostgreSQL version 7.3.3
> >>
> >> The machine has 128mb ram with a 4gb hard drive
> >>
> >> PS. I am not a Linux expert and have to get this
> >> working on my own so
> >> any help would be appreciated.
> >>
> >> Thanks
> >> Theuns
> >>
>
>_____________________________________________________________________
> __
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> >>
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> >>
> >> ---------------------------(end of
> >> broadcast)---------------------------
> >> TIP 4: Don't 'kill -9' the postmaster
> >
> >
> >__________________________________
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>
> Theuns
>
_______________________________________________________________________
> LOOK GOOD, FEEL GOOD - WWW.HEALTHIEST.CO.ZA
>
> Cool Connection, Cool Price, Internet Access for R59
> monthly @ WebMail
> http://www.webmail.co.za/dialup/


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