how to read database after a particular and write its next record to another dataset via JCL.
why not speak to Your APPLICATION ANALYST ???
he knows what database You are talking about, WE DO NOT
he knows how to determine the particular record where to start the process, WE DO NOT
JCL does not do anything, it just sets up the environment so that a program has access to the needed resources.
DO NOT ASK US... ASK SOMEBODY IN YOUR ORGANIZATION WHO KNOWS THE DETAILS