MAXMEM error....

folks, Does any one know solution for this problem other than tuning down the SHARED memory parameters in Informix . In other word, what UNIX parameter has to be increased to accomodate the values I have given I am running IDS 7.31FC6 on Digital Unix 5.0A thanks, Niraj 1:03:55 shmat: [ENOMEM][12]: out of available data space, check system MAXMEM 11:03:55 mt_shm_init: can't create resident segment 11:04:37 shmat: [ENOMEM][12]: out of available data space, check systemMAXMEM 11:04:37 mt_shm_init: can't create resident segment