First; Thanks to all for helping me with my questions and developing environment. I have a question that involves transient space on the HP3000 system. Yes, I have seen the formula in the manual but I looking for real life experience. We are have this weekend 112GB system. Main Memory will be about 2GB. User will reach approximately 900. All connect through a LAN network. Batch jobs unknown now. Cobol and 4GL languages. I have had advice from 8GB to 34GB for MPEXL_SYSTEM_VOLUME_SET. Appreciate reply with your opinion. Buy a beer at Interex'95 Thanks Dave Jennings.