Re: After OS upgrade, can't run database engine

Cosmo Lee wrote: > > We're running Unixware 2.1 and Informix Online 7.23.UC1 on a Compaq > Proliant 1500 server (Dual 200 MHz Pentium Pros ). > > We just upgraded our Unixware from version 2.1.1 to version 2.1.2. > After the upgrade we cannot instantiate Online. The following message > appears in the "online.log" error file: > > 08:27:18 shmat: [ENOMEM][12]: out of available data space, check system> MAXMEM > > 08:27:19 mt_shm_init: can't create resident segment> > I've checked the Kernel parameters related to Informix Online to make > sure that they are the same on the upgraded OS version as the previous > one. As far as I can tell, they are, although some of the Kernel > parameters specified by Informix don't actually exist in Unixware > (SHMMIN, SEMMAP, SEMMNU, NCALL, NPROC MAXUP) Also, as far as I can > tell, there is NO tunable called MAXMEM. SHMMAX, though, is set > properly. > > We then removed the 2.1.2 upgrade, going back to 2.1.1 level, rebuilt > the kernel, then rebooted. But upon reboot, Online once again will not > come up (w/ previous level OS), and we get the same error messages! > Ugh!! > > The only thing that saved our butts and keeps us in business is the fact > that I saved the original Unix kernel (before the upgrade) and am > booting from that. > > Any ideas what is going on? This definitely sounds like a configuration parameter in the kernel build, not an OS version problem. Especially since rebuilding the old kernel version with the default parameters was not sufficient, you had to go back to the original kernel. Contact Unixware and get the correct parameters. Art S. Kagel