IBM Mainframe Forum

hey group,

are there any tools for doing impact analysis? lets say we have a copy book and we have a request htat we have to make some changes to it, say increase the field size and this copy book is been used by 100 other programs , and we increased the size of field using filler bytes that r there in the copy book, now if the other 100 progrmas dont used this field shud we also make changes to that 100 progrmas? and are there any tools for doing impact analysis in mainframes?

thnks

Hello,

To learn if any tool is available in your environment, suggest you talk with the Configuration Management people or others who have been working in the environment for some time.

One way is to search the source library for the copybook (assuming that every program that references the file uses the copybook). Another often helpful search is to search the production jcl for anytime the data set name(s) for the file are referenced.

It is safest and more clear to re-compile everything that uses the file (so that there will not be a misunderstanding later when someone tries to use filler that is no longer filler. . .