Backup problem on IDS 92 (Linux)

hi All. Could anybody help me please with the backup procedure. I use the alarm procedure: ------------------- BACKUP_CMD="$INFORMIXDIR/bin/onbar -l" .... case "$EVENT_CLASS" in 20) #-- Logical Logs are Full - Backup is needed echo " +%D-%T : trying to backup " >> $ALRM_LOG echo -e "\\ny\\n" | $INFORMIXDIR/bin/ontape -a > /dev/null 2>&1 EXIT_STATUS=$? ;; 23) #-- Logical Log complete $BACKUP_CMD > /dev/null 2>&1 EXIT_STATUS=$? ;; ------------------- It works but sometimes not.. I have a lot of problem: ------------------------------ 1) Informix shuts down with following messages: 09:30:02 Logical Log 52 - Backup Started 09:30:04 Logical Log 52 - Backup Completed 09:30:04 Logical Log 53 - Backup Started 09:30:06 Assert Failed: Mutex Holder Value is not Null 09:30:06 Informix Dynamic Server 2000 Version 9.20.UC1 09:30:06 Who: Session(3570, cpp@app.les.loc, 22117, 272280636) Thread(16544, sqlexec, 1037cf58, 1) File: mt.c Line: 6136 09:30:06 stack trace for pid 537 written to /var/tmp/af.4488ba5d 09:30:06 Process exited with return code 142: /bin/sh /bin/sh -c /opt/informix/etc/log_full.sh 2 23 "Logical Log 60 Complete." "LogicalLog 60 Complete." 09:30:07 See Also: /var/tmp/af.4488ba5d, shmem.4488ba5d.0 09:30:27 mt.c, line 6136, thread 16544, proc id 537, Mutex Holder Value is not Null. 09:30:35 The Master Daemon Died 09:30:37 PANIC: Attempting to bring system down 09:30:37 semctl: errno = 22 2) The OnBar utility says: 2000-05-25 11:40:39 28752 28749 /opt/informix/bin/onbar_d -l 2000-05-25 11:40:39 28752 28749 An unexpected error occurred: /usr/lib/ibsad001.so: cannot open shared object file: No such file or directory . 2000-05-25 11:40:39 28752 28749 Could not open XBSA library /usr/lib/ibsad001.so. 2000-05-25 11:40:39 28752 28749 An unexpected error occurred: /usr/lib/ibsad001.so: cannot open shared object file: No such file or directory . 2000-05-25 11:40:39 28752 28749 Could not open XBSA library /usr/lib/ibsad001.so. 2000-05-25 11:40:39 28752 28749 Unable to open file /opt/informix/etc/sm_versions No such file or directory 2000-05-25 11:40:39 28752 28749 /opt/informix/bin/onbar_d complete, returning 142 (0x8e) --------------------------- Thanks in advance.