Upgrade from Informix 5 to 7.23

Sorry folks for posting the same message, but I did not include all the information on the first one... We have just upgraded our database from Informix 5 to 7.23, running on Solaris 2.51. The size of the database is 48Gb. Since our upgrade this past weekend, the machine hasn't been stable for more than an hour. Informix keeps aborting from an "Assert Error". We currently have an Informix Tech on-site, as well as the vendor (Boris) who supplied us the application we are using. Everyone is scratching their heads on this here. Any help would be really appriciated! Here is the message from the online log: 09:24:00 Assert Failed: Internal Error - Segmentation Violation 09:24:00 Who: Session(3695, boris@trend, 19419, 637937636) Thread(3776, sqlexec, 28618f58, 5) 09:24:00 Results: OnLine must abort 09:24:00 Action: Reinitialize shared memory 09:24:00 See Also: /tmp/af.ec08370 09:24:00 rsinit.c, line 9947, thread 3776, proc id 323, Segmentation Violation. 09:24:00 PANIC: Attempting to bring system down The stack trace file for this assert error reads: 09:24:00 09:24:00 Assert Failed: Internal Error - Segmentation Violation 09:24:00 Who: Session(3695, boris@trend, 19419, 637937636) Thread(3776, sqlexec, 28618f58, 5) 09:24:00 Results: OnLine must abort 09:24:00 Action: Reinitialize shared memory 09:24:00 See Also: /tmp/af.ec08370 09:24:00 Stack for thread: 3776 sqlexec base: 0x2933a018 len: 33280 pc: 0x003a5d88 tos: 0x293411b8 0x003a56dc mt_affail (0xec08370, 0x568e54, 0x28618f58, 0x260627e4, 0x260627e4, 0x2681e438) 0x00297e14 rsam_affail (0x26177eb0, 0x2681e438, 0x568e54, 0x28618f58, 0x260627e4, 0x0) 0x0007c058 hang_thread (0x506998, 0x2400, 0xb, 0x507208, 0x0, 0x0) 0xef5b8c7c ***unknown*** (0xb, 0x0, 0x29341a88, 0x15, 0x0, 0x0) 0x0019d788 gettab (0x264e4160, 0x4d04e054, 0x1, 0x264e4030, 0x28962c50, 0x29341e60) 0x001b2c40 tlgetddtab (0x264e4620, 0x264e4030, 0x29341f44, 0x264e4418, 0x264e4820, 0x28138e17) 0x001b3514 spgettab (0x264e4620, 0x264e4030, 0x29341f44, 0x15, 0x264e4820, 0x264e4b19) 0x001b3404 tlp2tnode (0x264e4620, 0x264e47f0, 0x0, 0x264e4030, 0x264e4820, 0x264e47d1) 0x001af300 sel2cb (0x264e4750, 0x264e4030, 0x0, 0x264e4820, 0x0, 0x4650) 0x001aeccc qblk2cb (0x264e4790, 0x264e4030, 0x0, 0x184dd8, 0x1, 0x50ecce) 0x001a8950 p_sp2cb (0x0, 0x264e4030, 0x0, 0x646, 0x332, 0x332) 0x0016a768 parsecmd (0x1, 0x0, 0x0, 0x5724b4, 0x37, 0x0) 0x0016a164 sqcmd (0x1, 0x0, 0xe230, 0xa004800, 0x8, 0x40) 0x0017eee8 sqmain (0xe000, 0x1, 0x5724b4, 0x572400, 0x5748dc, 0x1) 0x0038b32c startup (0x260a8018, 0x29d07168, 0x1, 0x28c41168, 0x5748dc, 0xc) 0x003868fc mt_wait (0x0, 0x0, 0x0, 0x0, 0x0, 0x0) 0x00000000 ***unknown*** 09:24:00 ------------------ End of assertion failure 0 ----------------- Also, I had one more question... I have heard a rumor that Informix 7.x can not backup on a Solaris 2.51 machine. Does anyone know if this is valid or not? Thanx again!