UNIX-Box slow down while execute stored procedure

Hi, Sorry for my "special english". We are on a DGUX-Box with IDS 7.31 ( 4 P3/700 / 2 GB Mem ) We have a problem with a stored procedure (ca. 1500 lines) for reportings. The short version of procedure: CREATE TEMP TABLE xxx ... WITH NO LOG FRAGMENT BY ROUND ROBIN;(testet with 2 and 4 tempdbs on different dics) INSERT INTO xxx .... SELECT FROM second DATABASE via SYNONYMS; (ca 5 000 rows per month)ca. 20x UPDATE xxx SELECT FROM second DATABASE via SYNONYMS.... FOREACH SELECT RETURN ... The procedure runs, when a user starts an Report (via Crystal Reports over "onsoctcp"). Informix is configured for an OLTP - Environment (onconfig below) there are up to 100 (OLTP)Users. If the Procedure runs for up to 8 month of data (up to 40 000 rows) there is no problem (5-8 min). when report starts e.g. for 9 Month AND when it is the "normal worktime" the unix-System "freeze" up to an hour. If then the procedure returns the results to Crytal Reports , Unix is comming up to normal reaction. If the procedure runs in evening time (up to 30 OLTP Users) the procedure produce syscalls, disk i/o esp. on the tempdbs-Disks but there is no problem with the OLTP-Users and unix-Sessions. So it is hard to find out what the problem is ... The Unix-System is at the "problem time" too slow to start everything like onstats, nsar etc. We playing with PDQ: MAX_PDQPRIORITY 100, 50, 1; SET PDQPRIORITY 20, 3, 0 (in the procedure) - nothings helps. All ideas are more than welcome. Thanks in advance for your help on the subject. Kai onconfig: Configuration File: /usr/local/informix/etc/onconfig # Root Dbspace Configuration ROOTNAME rootdbs # Root dbspace name ROOTPATH /usr/opt/informix/dbspaces/dbs_root #ntaining rootdbspace ROOTOFFSET 100 # Offset of root dbspace into device (Kbytes) ROOTSIZE 245000 # Size of root dbspace (Kbytes)# Disk Mirroring Configuration Parameters MIRROR 0 # Mirroring flag (Yes = 1, No = 0) MIRRORPATH # Path for device containing mirroredroot MIRROROFFSET 0 # Offset into mirrored device (Kbytes)# Physical Log Configuration PHYSDBS logdbs # Location (dbspace) of physical log PHYSFILE 20000 # Physical log file size (Kbytes)# Logical Log Configuration LOGFILES 64 # Number of logical log files LOGSIZE 8000 # Logical log size (Kbytes)# Diagnostics MSGPATH /usr/local/informix/online.log # System message log file path CONSOLE /dev/console # System console message pathALARMPROGRAM /usr/opt/informix/lfb/alarm # Alarm program path SYSALARMPROGRAM /usr/local/informix/etc/evidence.sh # System Alarm program path TBLSPACE_STATS 1# System Archive Tape Device ###TAPEDEV /dev/null TAPEDEV /usr/opt/informix/dbspaces/tape_arc TAPEBLK 256 # Tape block size (Kbytes) TAPESIZE 20000000 # Maximum amount of data to put on tape (Kbytes)# Log Archive Tape Device LTAPEDEV /dev/null # Log tape device path LTAPEBLK 256 # Log tape block size (Kbytes) LTAPESIZE 20000000 # Max amount of data to put on log tape (Kbytes) # OpticalSTAGEBLOB # Informix Dynamic Server/Optical staging area # System Configuration SERVERNUM 0 # Unique id DBSERVERNAME xxxxx # Name of default database server DBSERVERALIASES xxxxxx # List of alternate dbservernames NETTYPE ipcshm,3,199,CPU # Configure poll thread(s) fornettype NETTYPE tlitcp,3,199,NET # Configure poll thread(s) fornettype DEADLOCK_TIMEOUT 60 # Max time to wait of lock indistributed env. RESIDENT 0 # Forced residency flag (Yes = 1, No = 0) MULTIPROCESSOR 1 # 0 for single-processor, 1 formulti-processor NUMCPUVPS 3 # Number of user (cpu) vps SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vpsto one NOAGE 0 # Process aging AFF_SPROC 0 # Affinity start processor AFF_NPROCS 0 # Affinity number of processors# Shared Memory Parameters LOCKS 2560000 # Maximum number of locks BUFFERS 350000 # Maximum number of shared buffers NUMAIOVPS 6 # Number of IO vps PHYSBUFF 512 # Physical log buffer size (Kbytes) LOGBUFF 512 # Logical log buffer size (Kbytes)LOGSMAX 64 # Maximum number of logical log files CLEANERS 127 # Number of buffer cleaner processes SHMBASE 0x20000000 # Shared memory base address SHMVIRTSIZE 131072 # initial virtual shared memorysegment size SHMADD 24576 # Size of new shared memory segments (Kbytes) SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited CKPTINTVL 1800 # Check point interval (in sec) LRUS 127 # Number of LRU queues LRU_MAX_DIRTY 1 # LRU percent dirty begin cleaninglimit LRU_MIN_DIRTY 0 # LRU percent dirty end cleaning limit LTXHWM 50 # Long transaction high water markpercentage LTXEHWM 60 # Long transaction high water mark (exclusive) TXTIMEOUT 0x12c # Transaction timeout (in sec) STACKSIZE 64 # Stack size (Kbytes)# System Page Size # BUFFSIZE - Dynamic Server no longer supports this configuration parameter. # To determine the page size used by Dynamic Server on your platform # see the last line of output from the command, 'onstat -b'. # Recovery Variables # OFF_RECVRY_THREADS: # Number of parallel worker threads during fast recovery or an offline restore. # ON_RECVRY_THREADS: # Number of parallel worker threads during an online restore. OFF_RECVRY_THREADS 10 # Default number of offline workerthreads ON_RECVRY_THREADS 1 # Default number of online workerthreads # Data Replication Variables # DRAUTO: 0 manual, 1 retain type, 2 reverse type DRAUTO 0 # DR automatic switchover DRINTERVAL 30 # DR max time between DR buffer flushes (in sec) DRTIMEOUT 30 # DR network timeout (in sec) DRLOSTFOUND /usr/local/informix/etc/dr.lostfound # DR lost+found# CDR Variables CDR_LOGBUFFERS 2048 # size of log reading buffer pool (Kbytes) CDR_EVALTHREADS 1,2 # evaluator threads (per-cpu-vp,additional) CDR_DSLOCKWAIT 5 # DS lockwait timeout (seconds) CDR_QUEUEMEM 4096 # Maximum amount of memory for any CDR queue (Kbytes)CDR_LOGDELTA 30 # % of log space allowed in queue memory CDR_NUMCONNECT 16 # Expected connections per server CDR_NIFRETRY 300 # Connection retry (seconds