exec datablade causing informix to crash

Hi, We use exec data blade. Recently we are experiencing frequent crashes on our production system. From online log and af files it looks like it has something to do with exec datablades. Is there a way we can find out which component of exec datablade failed. We have only the af file. We don't have the shared memory dump. Thanks. Ravi. ============== online.log file =========================== 14:39:48 Assert Failed: Exception Caught. Type: MT_EX_OS, Context: mem 14:39:48 Informix Dynamic Server 2000 Version 9.21.UC4XE 14:39:48 Who: Session(1134, gui@whflxsnp03, -1, 1581031816) Thread(1276, sqlexec, 5e3a1658, 3) File: mtex.c Line: 356 14:39:48 Action: Please notify Informix Technical Support. 14:39:48 stack trace for pid 6235 written to /tmp/af.8e40e13 14:39:48 See Also: /tmp/af.8e40e13 14:40:10 (-9791): ERROR: Routine execution trap -- procname=<bk> procid=380 reason: mem 14:40:10 Assert Failed: No Exception Handler 14:40:10 Informix Dynamic Server 2000 Version 9.21.UC4XE 14:40:10 Who: Session(1134, gui@whflxsnp03, -1, 1581031816) Thread(1276, sqlexec, 5e3a1658, 3) File: mtex.c Line: 405 14:40:10 Results: Exception Caught. Type: MT_EX_OS, Context: mem 14:40:10 Action: Please notify Informix Technical Support. 14:40:10 stack trace for pid 6235 written to /tmp/af.8e40e13 14:40:10 See Also: /tmp/af.8e40e13 14:40:32 mtex.c, line 405, thread 1276, proc id 6235, No Exception Handler. 14:40:32 Fatal error in ADM VP at mt.c:11462 14:40:32 Unexpected virtual processor termination, pid = 6235, exit = 0x100 14:40:32 PANIC: Attempting to bring system down ============================================================== =============== af file ===================================== 14:39:48 Informix Dynamic Server 2000 Version 9.21.UC4XE 14:39:48 Assert Failed: Exception Caught. Type: MT_EX_OS, Context: mem 14:39:48 Who: Session(1134, gui@whflxsnp03, -1, 1581031816) Thread(1276, sqlexec, 5e3a1658, 3) File: mtex.c Line: 356 14:39:48 Action: Please notify Informix Technical Support. 14:39:48 Stack for thread: 1276 sqlexec base: 0x5e67b000 len: 36864 pc: 0x006b43d0 tos: 0x5e682688 state: running vp: 3 0x006b3794 (oninit)afhandler(0x8e40e13, 0x1, 0x0, 0x5e3ca188, 0x2, 0x5e3a1658) 0x006b3160 (oninit)affail_interface(0x5e682de0, 0x0, 0x7a797880, 0x0, 0x9a7788, 0x164) 0x006b7814 (oninit)mt_ex_throw_sig(0x1, 0x9a4ae0, 0x4, 0x0, 0x1, 0x6b3d46d0) 0x006876b0 (oninit)afsig_handler(0x0, 0x0, 0x0, 0xd0000, 0x0, 0x5c) 0x003de118 (oninit)sqmksdb1(0x5e66c888, 0xa23dc0, 0x0, 0x0, 0x0, 0x5e66c888) 0x003ddda4 (oninit)sqmksdb (0x5e66c888, 0x28, 0x6c322820, 0x0, 0x23, 0x7ca87037) 0x0033bf6c (oninit)mksdb (0xa23c00, 0x5e66b020, 0x6c322820, 0x15, 0x28, 0x6c322818) 0x00177c70 (oninit)initcrd (0x69e81c30, 0xa0f164, 0x5e6837e4, 0x0, 0xa23c00, 0x68) 0x001773f4 (oninit)qd_initenv(0x69e81c30, 0x6171ad60, 0x5e6837e4, 0x5e6837e0, 0x0, 0x68) 0x00164508 (oninit)ip_evalexpr(0x69e81c30, 0x6171ad60, 0x68, 0x69e81db0, 0x0, 0x0) 0x0016316c (oninit)runproc (0x8c9400, 0x2e4, 0xa0f164, 0x788fa830, 0x788fa8a0, 0x69e81c30) 0x0016fce4 (oninit)udrlm_spl_execute(0xa23dc0, 0x602a1, 0x6b1df218, 0x6b1df150, 0x3, 0xffffffff) 0x0036cefc (oninit)udrlm_exec_routine(0x6b1df218, 0x7910cc20, 0x0, 0x8f8000, 0x5e6a4018, 0x6b1df25c) 0x0019160c (oninit)udr_execute(0x788fa8a0, 0x0, 0x1190, 0x0, 0x1, 0x0) 0x00170a58 (oninit)udr_spl_curnext(0x78ddca08, 0x5e683ca0, 0x6b1df150, 0x78ddc9f0, 0x1, 0x0) 0x0016b5c8 (oninit)ip_curnext(0x0, 0xffffffff, 0x5e683c9c, 0x69477068, 0x5e683ca0, 0x0) 0x0016b234 (oninit)ip_fetch(0x675328b0, 0x100000, 0xa0f000, 0x77d1a078, 0x3, 0x1) 0x0024e194 (oninit)getrow (0x0, 0x20000, 0x8000, 0x10000000, 0x78ddca68, 0x800000) 0x0024e060 (oninit)fetchrow(0x675328b0, 0xa0f000, 0xa23dc0, 0x1000, 0x117c, 0xa23c00) 0x003dbd18 (oninit)exfetch (0x675328b0, 0xa23c00, 0x0, 0x5e683eac, 0x30, 0xef508960) 0x0034430c (oninit)sq_nfetch(0xa23dc0, 0x5e66c018, 0x1, 0x0, 0x5e6a4018, 0x80a) 0x003bc0a4 (oninit)sqmain (0xa18568, 0x8c9400, 0xa23c00, 0x8ee078, 0xfffdffff, 0x20000) 0x00694698 (oninit)startup (0xa1e400, 0xa0f400, 0x59009270, 0x0, 0x0, 0x59009270) 0x006886ac (oninit)idle_processor(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) 0x00000000 (*nosymtab*)0x0