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

COBOL (1072)
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IMS (143)
IDMS (107)
Natural (81)
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REXX (60)
Assembler (68)
CLIST (6)
QMF (32)

MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

Kindly specify the pic clause for the hhmmss type of data fields?

1066

What are fset, frset?

1008

What does the 'cebr:cics' transactions do?

1027

Kindly specify the pic clause for the any bll cell type of data fields?

1215

Code the related portions of cics/cobol-i programs to gain addressability to twa area assigned to a particular task. Assme that the size of twa area is 300bytes. What are the advantages if cobol-ii is used in the place of cobol?

1139

What is the comaera (communication area)?

1102

What dd statement is used to supply the name of a dataset?

1386

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

1091

How can unused space allocation be returned to the system when a dataset is closed?

1487

What is the purpose of dd dummy statement?

1460

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

1262

What is the function of //cntl statement?

1331

What is the function of dd disp parameter?

1133

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

1223

What is the function of job statement in jcl?

1088

Un-Answered Questions { IBM MainFrame }

What is the purpose of rollback and commit?

1190

Name at least one of the ways by which a transaction can be terminated?

1039

What are the various isolation levels possible?

1116

how do u start your process after conducting impact analysis ?

2121

What are the various error conditions seen in rexx?

912

What does a COMMIT statement do?

1384

What is the use of trt instruction?

1014

what is use of dcb parameter in dd statement?

1297

how to access data held on the jes spool?

1059

in order to execute step2 a job after a return code of 8 in step1, what condition you will code in step2?

2707

Write some characteristics of cobol as means of business language.

1142

How to code these statements in JCL: CLEANUP INITIAL(NO) RESTART(NO) DYNALLOC(NO) job definition..?

2254

by using xpeditor if we want to debug the subpgm, how can you code in x-ped for mai-pgm n sub-pgm ?

2279

Is it possible to obtain a record from IDMS database without mentioning the record-name itself?

1330

What is report-item in COBOL?

1152

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