Mainframe, MVS and zOS Discussion

Is it possible to undo the changes made by a COBOL program after it has executed, and if so, what are the methods or techniques available to roll back these updates effectively?

Do NOT post your completely irrelevant question on the back of someone's topic.  Start your own topic instead.  And your question is so broad as to be meaningless.  Does the COBOL program update a sequential data set? a VSAM data set? a DB2 table? all of them?