Re: [24]: out of shared memory segments, check sys

Posted in 2007

Tilman — Wed, 08 Aug 2007 09:59:17 — source: IIUG Forums & Mailing Lists

informix-list-bounces@iiug.org wrote on 08/08/2007 11:24:48 AM: ... > > When I defined export EXTSHM=ON in ".profile" of ROOT and INFORMIX > users and tried to restart the IDS, I faced following errors > therefore i had no other choice than to revert this change. > Sun Aug 5 01:15:02 2007 > 01:15:08 IBM Informix Dynamic Server Version 10.00.UC5 Software > Serial Number AAA#B000000 > 01:15:08 KAIO: error in kaio_READ, kaiocbp = 0x5024c7c8, errno = 14 > 01:15:08 fildes = 256 (gfd 4), buf = 0x60048c00, nbytes = 4096, offset = 0 > 01:15:08 Assert Warning: chunk failed sanity check > > 01:15:08 IBM Informix Dynamic Server Version 10.00.UC5 > 01:15:08 Who: Session(1, informix@appsec, 0, 50226018) > Thread(7, main_loop(), 501fd018, 1) > File: rspartn.c Line: 8673 > 01:15:08 Results: Chunk 2 is being taken OFFLINE. > 01:15:08 Action: Restore chunk from archive. > 01:15:08 stack trace for pid 20888 written to /informix/ids10/tmp/af.3efde4c > 01:15:08 See Also: /informix/ids10/tmp/af.3efde4c > 01:15:09 chunk failed sanity check > > 01:15:10 I/O error, Primary Chunk '/app/db/app_lnk_dbs' -- Offline (sanity) hmm . it seems starnge to me that EXTSHM=ON causes IO erros. But you might want to check AIX HIPER IY66147. If you can't figure it out quickly and have to run IDS w/o EXTSHM - try to configure IDS so that it uses a multiple of 256 MB for resident shm segment (check BUFFERS, LOCKS mainly) and that SHMVIRTSIZE and SHMADD is a multiple of 256 MB. (N:B ONCONFIG valzue of SHMVIRTSIZE and SHMADD is in KB , so set it to 262144 or a multiple. HTH Tilman