On Thu, Nov 29, 2012 at 11:04:25PM +0000, Roger Leigh wrote:
> On Thu, Nov 29, 2012 at 10:14:51PM +0000, Roger Leigh wrote:
> > On Sun, Nov 25, 2012 at 11:45:48PM +0100, Jozsef Marton wrote:
> > > After the transition to /run/shm from its previous location at /dev/shm,
> > > a symlink was created for compatibility reasons:
> > > /dev/shm -> /run/shm
> > >
> > > In this configuration Oracle Database 11g XE refuses to start with the
> > > following error message:
> > > ORA-00845: MEMORY_TARGET not supported on this system
> > >
> > > Bind mounting /run/shm to /dev/shm does the trick: Oracle starts properly.
> >
> > How is Oracle testing for the presence of /dev/shm? Their check is
> > obviously broken, but it would be helpful to know what exactly they
> > are doing. strace would be useful here.
>
> Just to double check that everything is working correctly, this is
> a simple test program:
>
> ------------------------------------------------------------------
> #include <sys/mman.h>
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <stdio.h>
> #include <errno.h>
> #include <stdlib.h>
> #include <string.h>
> #include <unistd.h>
>
> void fail(const char *msg, const char *err)
> {
> fprintf(stderr, "E: %s: %s\n", msg, err);
> exit(1);
> }
>
> int main(void)
> {
> int fd = shm_open("test_shm", O_CREAT|O_RDWR|O_EXCL|O_TRUNC, 0600);
>
> if (fd < 1)
Typo. Should be < 0 of course.
--
.''`. Roger Leigh
: :' : Debian GNU/Linux http://people.debian.org/~rleigh/
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