MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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MainFrame Interview Questions

Questions Answers Views Company eMail

What is the purpose of dd dummy statement?

1463

When space is allocated for an output dataset, what units can be used?

1269

What is the function of //cntl statement?

1336

What is the function of dd disp parameter?

1136

Many jcl statements contain specific values designed to direct and control the execution of the statement. What are these fields called?

1228

What is the function of job statement in jcl?

1094

What is the format of comment statement?

1224

In sms datasets, what is the function of the dd mgmtclas keyword?

1387

In order to continue a job after a return code of 12 in step1, what the step2 exec statement include?

1 3341

Where can program checkpoints be stored for use in a restart?

1440

How can values be passed from the job stream to an executable program?

1444

What is concatenating?

1082

What is the function of //jcllib statement?

1320

What statement marks the beginning of a job step; assigns a name to the step; identifies the program or catalogued or in-stream procedure to be executed in the step?

1103

Why block size is multiple of lrecl in jcl?

1427

Un-Answered Questions { MainFrame }

What is frset?

1032

Tell me can we update with histogram?

1152

what are indicators?

1054

Differentiate cobol and cobol-ii. (Most of our programs are written in cobolii, so, it is good to know, how, this is different from cobol)?

1117

What are the contents of dclgen?

1112

What is the use of db2 optimizer?

1117

how do you reference the esds vsam file formats from cobol programs

1216

what is the probability of a complete system distortion under high end low performing multiprocessor job?

2471

Assume 2 users are using the same file and first user updates some record in the file. Will the 2nd user will be able to see the updated record or not?

945

Is it possible to alter a table – for example adding a column, when another user is accessing or updating some columns?

1082

can I redistribute oorexx freely with commercial software?

1043

how long does the install of oorexx take?

1014

Explain the difference between physical map and symbolic map?

993

can a join logical file be updated?

1022

What are the 2 types of parameters in dd statement?

1158

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