>However,if an address space has used up all of its available private area,will the force decrease of its private area cause problems?Say,you allocate a >100M region for a tso user and this user is executing a program in this address space which occupies all 100M virtual storage space.Then the common area >increases.What happens to this user's address space and the program he is executing?
The common area will NOT increase dynamically in that sense. What is being referred to is the fact that when something is added to the common area (typically LPA), the total allocation will be rounded to the next megabyte (segment) boundary. Therefore when the system is IPL'd, the available amount of virtual storage to the address space will depend on how that rounding takes place. In effect, one byte extra could cause a 1 MB segment alignment to occur. The alignment occurs based on whether the module added is above or below the line (PLPA or EPLPA). This is primarily of interest for those applications that reside below the 16MB line since any dependency there could cause constraint and therefore prevent the application from running. Above the line there is typically no constraint for the majority of applications, and therefore presents no problem. Regards Adam ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
