Unicenter CA-QuickFetch Getting Started

What Unicenter CA-QuickFetch DoesPlacing modules in the LPA can help reduce the I/O problemsomewhat; however, it can only maintain reentrant loadmodules. In addition, if you increase the size of the LPA to holdthe load modules, you reduce the amount of virtual storage thatis available for other processing. Storing modules in the JPA canhelp users who repeatedly request a small set of load modules.However, this only partially alleviates the problem because ofthe strict rules for sharing and reusing modules in the JPA. Inaddition, if other users access the same load modules, themodules have to be repeatedly read from DASD, because oneuser cannot access the JPA of another user.Many system-related programs, such as compilers, sortprograms, and TSO command processors are repeatedly loadedfrom DASD. Often, Program Management has to search severalDASD volumes to locate these programs. Also, mostapplications require the execution of several load modules.Program Management must search for each load moduleindividually. If Program Management must read several of theload modules from DASD, there will be considerable delays.Product Overview 1–3