Name the system library from which modules are retrieved at
execution
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What is the difference between specifying DISP=OLD and DISP=SHR for a dataset?
What will happen if you attempt to restart a job in the middle of a JCL // IF .... // ENDIF?
How does jcl act on code(if you take a cobol program)?
can we bowse or edit the GDG dataset if it is a tape entry?
I have 15 flat files. each record in the files have the monthly salary for 12 months with the employee number. Now I want to concatenate the 15 files such that for the employee numbers that are common the o/p file should have only one record and the salaries should be concatenated to that record. How can we do it with JCL?
In order to continue a job after a return code of 12 in step1, what the step2 exec statement include?
what type of version is we r using now real time in all modules(cobol, jcl, cics, db2, vsam)?
Suppose i have 2 steps in my pgm. Step1- creates a file, Step2 - generates report from file in step1, What changes have to be made in Step2, so that if the file in Step1 is empty Step2 should not be executed? No changes to be made to Step1.
How to concatenate different LRECL of files?
Is their any set of rules for dd? Explain.
What are the parameters that are used in creating a gdg?
How to exclude the duplicate records from two concateded flat files (records from both files must be removed)?
COBOL 
