On Fri, 6 Apr 2012 14:30:23 +0200, Holm Tiffe <holm at freibergnet.de> wrote: From the VMS error messages manual at http://h71000.www7.hp.com/doc/73final/6023/6023pro_019.html : VASOVF, system virtual address space limit exceeded *Facility:*SYSBOOT, System Bootstrap Facility *Explanation:*The combination of SYSGEN parameters used to specify various capacities within the operating system have pushed the size of the operating system address space over the limit allowed by the VAX architecture. *User Action:*Reduce one of the parameters (BALSETCNT or VIRTUALPAGECNT (VAX only)) that contribute to the virtual address space size required by the OpenVMS system. By using AUTOGEN to set these values for your system, you avoid selection of parameter combinations that cause system space to overflow its architectural boundaries. To recover, perform a conversational boot (i.e. the boot process will let you modify system parameters to recover from a situation like yours). It is described here: http://h71000.www7.hp.com/doc/82final/aa-pv5mj-tk/00/00/34-con.html Use the "booting with default system parameters" section. You probably then need to reduce VIRTUALPAGECNT below the value you have set (which gives a 2GB virtual address space) because the VAX architecture allows max. 2 GB virtual memory and you are probably just over the limit. The VMS documentation is excellent, you will find it online here: http://h71000.www7.hp.com/doc/ and this is a good manual to start with: http://h71000.www7.hp.com/doc/82FINAL/aa-pv5mj-tk/aa-pv5mj-tk.HTMl (you will find it from the page above by following the link "OpenVMS Operating System" to the left. /Jonas