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                    Use of library statementsCan anyone pls explain in detail the use of LIB statements like JOBLIB,STEPLIB,JCLLIB,PROCLIB.... as i know where to use these but not clear on the purpose of using.... 
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                    What is the difference between a symbolic and an override in executing a PROC?A symbolic is a PROC placeholder; the value for the symbolic is supplied when the PROC is invoked, eg. &symbol=value. An override replaces the PROC's statement with another one; it substitutes for the entire statement. 
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                    What is the improvement to COND= in the latest version of MVS?MVS now allows for an IF bracketed by an END IF around any job step to replace the COND= syntax. Again, if the IF statement is true, the step is bypassed. 
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                    What does the keyword DCB mean and what are some of the keywords associated with it?DCB stands for data control block; it is a keyword for the DD statement used to describe datasets. Keywords associated with it are BLKSIZE, DEN, LRECL and RECFM. 
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JCL Interview Questions

 
  
  
  
		
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