Re: Help with shared memory in SCO

This is a common problem on x86 systems. You will need to reconfigure your kernel so that the maximum size of a shared memory segment is 4 MB. The problem is that Informix assumes that shared memory segments will be contiguous, while SCO (and other x86 Unixes) allocate each shared memory segment on a 4 MB boundary. The only way to keep both the o/s and OnLine happy is to ensure that the shared memory segment sizes are multiples of 4 MB (and the only multiple I'd consider using is one). Yours, Jonathan Leffler (johnl@informix.com) #include <disclaimer.h> }From ilist@rmy.emory.edu Mon Jun 9 19:43 PDT 1997 }From: Direccion de Teleinformatica <dti@dunn.dti.uaem.mx> }Subject: Help with shared memory in SCO }Date: Mon, 09 Jun 1997 20:28:28 -0600 }To: informix-list@rmy.emory.edu }X-Informix-List-Id: <news.38966> } }Hello, } }does anybody knows how to correctly initialize Shared memory }using informix online 4.0 under SCO UNIX 3.2? } }when I try to run tbinit I get the message: } }tbinit: shmat[EINVAL][22]: shared memory base address illegal } using 0x80480000, needs 0x80000000 }tbinit: fatal error in shared memory creation } }no matter wich values I asign to SHMBASE in $INFORMIXDIR/etc/tbconfig, }I get a similar message from tbinit } }obviously if I run any other IOL binary, I get the message: } }"Shared memory not initialized" } }This is my first time with SCO usig this very "demode" version of }OnLine. The manuals are lost, and I have not other reference. } }Regards. } }Rafael Pelanis }