Assert Failed: Unexpected virtual processor termination

Hi gurus, IUS Version 9.14.UC6 O/S = HP-UX 10.2 Way back in August before I stumbled across this list IUS crashed and the online.log showed: "Assert Failed: Exception Caught. Type: MT_EX_OS, Context: mem" closely followed by: "Assert Failed: Unexpected virtual processor termination, pid = 15483, exit = 0x8b" The IUS re-started OK and has not crashed since. But in my new found ignorance I would like to ask: "What does such a failure mean ?" OK I'll be honest; the client has asked my boss to explain what went wrong. And reasonablly enough my boss has asked me. Desperately seeking plausible explanations guaranteed to be believed by my boss ;-) Seriously I would like to be able to figure out what happened and why. TIA. Michael michael_martin@komatsu.co.jp ----------------------------------------------------- The excerpt from the log is as follows: Wed Aug 25 00:05:02 1999 00:05:02 Checkpoint Completed: duration was 0 seconds. 00:35:20 Checkpoint Completed: duration was 0 seconds. 02:06:15 Checkpoint Completed: duration was 0 seconds. 02:36:34 Checkpoint Completed: duration was 0 seconds. 07:39:36 Checkpoint Completed: duration was 0 seconds. 08:09:54 Checkpoint Completed: duration was 0 seconds. 08:39:59 Checkpoint Completed: duration was 0 seconds. 09:11:03 Checkpoint Completed: duration was 37 seconds. 09:41:04 Checkpoint Completed: duration was 0 seconds. 10:11:21 Checkpoint Completed: duration was 0 seconds. 10:41:44 Checkpoint Completed: duration was 0 seconds. 11:11:51 Checkpoint Completed: duration was 0 seconds. 11:41:52 Checkpoint Completed: duration was 0 seconds. 12:12:11 Checkpoint Completed: duration was 0 seconds. 12:42:31 Checkpoint Completed: duration was 0 seconds. 13:12:49 Checkpoint Completed: duration was 0 seconds. 13:42:53 Checkpoint Completed: duration was 1 seconds. 14:13:07 Checkpoint Completed: duration was 0 seconds. 14:43:22 Checkpoint Completed: duration was 1 seconds. 15:13:33 Checkpoint Completed: duration was 0 seconds. 15:44:05 Checkpoint Completed: duration was 4 seconds. 16:14:33 Checkpoint Completed: duration was 0 seconds. 16:44:45 Checkpoint Completed: duration was 0 seconds. 17:14:55 Checkpoint Completed: duration was 0 seconds. 17:27:02 Assert Failed: Exception Caught. Type: MT_EX_OS, Context: mem 17:27:02 INFORMIX-Universal Server Version 9.14.UC6 17:27:02 Who: Session(17299, informix@se0, -4110981, 0) Thread(17331, sqlexec, 0, 3) File: mtex.c Line: 291 17:27:02 Action: Please notify Informix Technical Support. 17:27:05 Blocking whole system for max 0 secs 17:27:05 VP 3 timed out during system block, releasing 17:27:05 VP 4 timed out during system block, releasing 17:27:05 Releasing server from system block 17:27:05 Releasing server from system block 17:27:05 Releasing server from system block 17:27:05 Releasing server from system block 17:27:05 Releasing server from system block 17:27:05 Releasing server from system block 17:27:05 Releasing server from system block 17:29:29 See Also: /informixtemp/af.43b3a8d5, shmem.43b3a8d5.0, /home1/informi x/core, gcore.43b3a8d5.0 17:29:41 Assert Failed: Unexpected virtual processor termination, pid = 15483,exit = 0x8b 17:29:41 INFORMIX-Universal Server Version 9.14.UC6 17:29:41 Who: Session(2, informix@, 0, 0) Thread(8, ipcstrpoll, 0, 1) File: mt.c Line: 9591 17:29:44 Blocking whole system for max 0 secs 17:29:44 Internal error detected in notify_vp 17:29:44 VP 1 timed out during system block, releasing 17:33:23 See Also: /informixtemp/af.8a975, shmem.8a975.0, /home1/informix/core , gcore.8a975.0