shmat: [24]: out of shared memory segments, check

Question: We can’t get more than 1 gig of initial shared memory at instance startup. Is there a way to increase the SHMVIRTSIZE, which is being limited by the OS AIX 6.1.0.0? IBM Informix Dynamic Server Version 9.40.UC3 -- On-Line -- Up 03:22:38 --2275792 Kbytes │ ------------------------------ export NMON=cmt │ │ Version 12e for 6100-00 │ │ 8 - CPUs currently │ │ 8 - CPUs configured │ │ 1648 - MHz CPU clock rate │ │ PowerPC_POWER5 - Processor │ │ 64 bit - Hardware │ │ 64 bit - Kernel │ │ 6.1.0.5 TL00 - AIX Kernel Version │ SHMBASE 0x40000000L # Shared memory base address SHMVIRTSIZE 1280000 # initial virtual shared memory segment size #SHMVIRTSIZE 2048000 # initial virtual shared memory segment size SHMADD 102400 # Size of new shared memory segments (Kbytes) SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited 15:30:27 Maximum server connections 1315 15:31:17 Logical Log 6402 Complete, timestamp:1764195766. 15:32:59 Logical Log 6403 Complete, timestamp:1764540580. 15:35:19 Logical Log 6404 Complete, timestamp:1764794866. 15:35:49 Fuzzy Checkpoint Completed: duration was 9 seconds, 1854 buffers not flushed, timestamp: 1764828552. 15:35:49 Checkpoint loguniq 6405, logpos 0x3b31d0, timestamp: 1764828552 15:35:49 Maximum server connections 1315 15:37:33 Logical Log 6405 Complete, timestamp:1764981669. 15:39:23 Logical Log 6406 Complete, timestamp:1765328050. 15:40:57 Fuzzy Checkpoint Completed: duration was 8 seconds, 1080 buffers not flushed, timestamp: 1765681397. 15:40:57 Checkpoint loguniq 6407, logpos 0x13035ec, timestamp: 1765681397 15:40:57 Maximum server connections 1331 15:41:02 Logical Log 6407 Complete, timestamp:1765695910. 15:41:21 Assert Failed: inbuf->sb_base->io_head.io_nrows <= sr->sr_iorows 15:41:21 IBM Informix Dynamic Server Version 9.40.UC3 15:41:21 Who: Session(341170, akauder@riker.intra.sears.com, 594094, a0798070) Thread(344205, sqlexec, a24649f0, 3) File: sort.c Line: 3202 15:41:21 Results: srtrdbuf 15:41:21 stack trace for pid 593996 written to /ifmx/backups/af.44758de1 15:41:21 See Also: /ifmx/backups/af.44758de1 15:41:30 inbuf->sb_base->io_head.io_nrows <= sr->sr_iorows 15:43:11 Logical Log 6408 Complete, timestamp:1766077707. 15:45:31 Logical Log 6409 Complete, timestamp:1766308123. 15:46:02 Fuzzy Checkpoint Completed: duration was 5 seconds, 2310 buffers not flushed, timestamp: 1766339888. 15:46:02 Checkpoint loguniq 6410, logpos 0x566028, timestamp: 1766339888 15:46:02 Maximum server connections 1331 15:47:06 Logical Log 6410 Complete, timestamp:1766432684. 15:48:23 Logical Log 6411 Complete, timestamp:1766545549. 15:49:41 Logical Log 6412 Complete, timestamp:1766739595. 15:49:58 Assert Failed: Memory block header corruption detected in mt_shm_free 1 15:49:58 IBM Informix Dynamic Server Version 9.40.UC3 15:49:58 Who: Session(395006, aodadm@hofhdweb03.sears2.ds.sears.com, -1, 968e7a08) Thread(398576, sqlexec, a2455c48, 4) File: mtshpool.c Line: 3256 15:49:58 Results: Pool not repaired 15:49:58 Action: Please notify IBM Informix Technical Support. 15:49:58 stack trace for pid 495870 written to /ifmx/backups/af.18d88fe6 15:49:58 See Also: /ifmx/backups/af.18d88fe6 15:50:06 Memory block header corruption detected in mt_shm_free 1 15:50:06 Assert Failed: Memory freed at bad boundary. 1024 bytes at 3337ac00 15:50:06 IBM Informix Dynamic Server Version 9.40.UC3 15:50:06 Who: Session(395006, aodadm@³½ä{=I03.sears2.ds.sears.com, -1, 968e7a08) Thread(398576, sqlexec, a2455c48, 4) File: mtshblk.c Line: 616 15:50:06 Results: Memory lost 15:50:06 Action: Please notify IBM Informix Technical Support. 15:50:06 stack trace for pid 495870 written to /ifmx/backups/af.18d88fe6 15:50:06 See Also: /ifmx/backups/af.18d88fe6 15:50:13 Memory freed at bad boundary. 1024 bytes at 3337ac00 15:51:05 Logical Log 6413 Complete, timestamp:1766867866. 15:51:13 Fuzzy Checkpoint Completed: duration was 5 seconds, 2157 buffers not flushed, timestamp: 1766873248. 15:51:13 Checkpoint loguniq 6414, logpos 0xdecf4, timestamp: 1766873248 15:51:13 Maximum server connections 1336 15:52:15 Logical Log 6414 Complete, timestamp:1766964571. 15:53:21 Logical Log 6415 Complete, timestamp:1767092868. 15:54:33 Logical Log 6416 Complete, timestamp:1767189420. 15:56:19 Fuzzy Checkpoint Completed: duration was 6 seconds, 2314 buffers not flushed, timestamp: 1767319162. 15:56:19 Checkpoint loguniq 6417, logpos 0x1308274, timestamp: 1767319162 15:56:19 Maximum server connections 1391 15:56:24 Logical Log 6417 Complete, timestamp:1767331019. 15:57:51 Logical Log 6418 Complete, timestamp:1767508582. 15:59:46 Logical Log 6419 Complete, timestamp:1767700175. 16:01:25 Fuzzy Checkpoint Completed: duration was 6 seconds, 2018 buffers not flushed, timestamp: 1767819386. 16:01:25 Checkpoint loguniq 6420, logpos 0xa482d4, timestamp: 1767819386 16:01:25 Maximum server connections 1391 16:03:42 Logical Log 6420 Complete, timestamp:1767977331. 16:05:43 Logical Log 6421 Complete, timestamp:1768156856. 16:06:31 Fuzzy Checkpoint Completed: duration was 6 seconds, 2198 buffers not flushed, timestamp: 1768201570. 16:06:31 Checkpoint loguniq 6422, logpos 0x78cef4, timestamp: 1768201570 16:06:31 Maximum server connections 1391 16:07:01 Assert Failed: No Exception Handler 16:07:01 IBM Informix Dynamic Server Version 9.40.UC3 16:07:01 Who: Session(394355, hds@picard.intra.sears.com, 454670, a07a0f9c) Thread(397904, srvinfx, ec2703d8, 1) File: mtex.c Line: 431 16:07:01 Results: Exception Caught. Type: MT_EX_OS, Context: mem 16:07:01 Action: Please notify IBM Informix Technical Support. 16:07:01 stack trace for pid 319574 written to /ifmx/backups/af.163893e5 16:07:01 See Also: /ifmx/backups/af.163893e5 16:07:09 mtex.c, line 431, thread 397904, proc id 319574, No Exception Handler. 16:07:09 The Master Daemon Died 16:07:09 PANIC: Attempting to bring system down 16:20:58 IBM Informix Dynamic Server Started. 16:21:00 shmat: [EMFILE][24]: out of shared memory segments, check system SHMSEG 16:21:00 shmdt: errno = 22 16:21:00 mt_shm_init: can't create virtual segment 16:21:39 IBM Informix Dynamic Server Started. 16:21:41 VP pid=401448 priority fixed at 60, former = 79 Mon Jul 13 16:21:41 2009 16:21:41 Event alarms enabled. ALARMPROG = '/usr/informix/etc/no_log.sh' 16:21:41 Booting Language <c> from module <> 16:21:41 Loading Module <CNULL> 16:21:41 Booting Language <builtin> from module <> 16:21:41 Loading Module <BUILTINNULL> 16:21:41 VP pid=557148 priority fixed at 60, former = 60 16:21:41 VP pid=381114 prio