我的Informix频繁crash，怎么办！

andyli

我的Informix9.3.0 UC1，系统是TurboLinux(kernel 2.4.19)
最近不知为什么，频繁宕机，请大师指点！

(不知道是不是操作系统与这个版本的Informix不兼容的问题)

以下是informix的dump文件中的部分信息：
02:22:35  Assert Failed: errors occurred during mt_notifyvp
02:22:35   Who: Session(146, informix@a010106, -1, 985409660)
                Thread(186, sqlexec, 3ab98a18, 4)
                File: mt.c Line: 10673
02:22:35  Stack for thread: 186 sqlexec

base: 0x3d5fd000
  len:   36864
   pc: 0x08552570
  tos: 0x3d605438
state: running
   vp: 4

0x08552570 (oninit)afstack (0x3d2bb648, 0x879cbc0, 0x3c4, 0x3d6054f0, 0x0, 0x752f)
0x08551c0f (oninit)afhandler(0x3, 0x870d980, 0x0, 0x0, 0x601, 0x1)
0x085516ca (oninit)afcrash_interface(0x870d980, 0x0, 0x0, 0x8797ad4, 0x29b1, 0x401d2000)
0x08537afa (oninit)notifyvp(0x1, 0x0, 0x0, 0x3d605a94, 0x8545170, 0x1)
0x08537bdb (oninit)mt_notifyvp(0x1, 0x0, 0x4000000, 0x0, 0x2, 0x401d2000)
0x08545170 (oninit)mt_shm_create_segment(0x4000000, 0x0, 0x2, 0x0, 0x3e86e688, 0x3e87b064)
0x08548bdd (oninit)morecore(0x2, 0x8000, 0xffffffff, 0xffffffff, 0x3d605ae0, 0x3e87b05
0x08549e59 (oninit)mt_shm_get_blk(0x3e86e688, 0x8000, 0x0, 0x1b8, 0x0, 0x0)
0x083fdf72 (oninit)create_mrgbuf(0x3d56ad30, 0x0, 0x0, 0x1, 0x3d5e62a0, 0x3e85b820)
0x083ff2fc (oninit)srtopenx(0x15, 0x10, 0x1, 0x3d5e60e8, 0x0, 0x3d5b149c)
0x081d7460 (oninit)sqsrtopen(0x15, 0x10, 0x1, 0x3d5e60e8, 0x0, 0x0)
0x082092a0 (oninit)sort_open(0x3d5e62a0, 0x3e85b820, 0x3e85bc20, 0x0, 0x0, 0x3ddee980)
0x081fbfa2 (oninit)prepselect(0x3e85b820, 0x3e85b820, 0x3e85bc20, 0x3d605ee4, 0x81f4a24, 0x3e85b820)
0x0821c5fb (oninit)subqprep(0x3e85b820, 0x3d56a138, 0x3d55fbc0, 0x3ddee9c0, 0x0, 0x3d605f00)
0x081f4a24 (oninit)startsubq(0x3d55fbc0, 0x3d56a138, 0x3ddee9c0, 0x3ddee9c0, 0x3d56a138, 0x3d605f34)
0x081f353c (oninit)scan_next(0x3d55fbc0, 0x3d56a138, 0x3ddee9c0, 0x3ddee9c0, 0x0, 0x1)
0x081fc53d (oninit)getrow  (0x3ddee9c0, 0x3ddee9c0, 0x0, 0x3ddee9c0, 0x3cc08d30, 0x8310d35)
0x081fc3aa (oninit)fetchrow(0x3ddee9c0, 0x3d5ba018, 0x3d605fc8, 0x82b7262, 0x3ddee9c0, 0x2)
0x0831e718 (oninit)exfetch (0x3ddee9c0, 0x2, 0x0, 0x3d605fbc, 0x9, 0x64)
0x082b7262 (oninit)sq_nfetch(0xa, 0x0, 0x0, 0x0, 0x3b77f0b8, 0x3d605ff
0x0830b60d (oninit)sqmain  (0x0, 0x0, 0x0, 0x0, 0x0, 0x15)
0x0853b3d9 (oninit)startup (0x15, 0x3d606400, 0x3d5fcc00, 0x400, 0x7ac03401, 0x0)
0x00000000 (*nosymtab*)0x0

andyli

我问过IBM，他看了说是共享内存不够用造成的

默认的是768MB，但不知道怎么增加?

我onconfig.db配置文件中SHMBASE的值是0x10000000L，不知道informix9.3.0 UC1能改到多大?