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

COBOL (1072)
JCL (1031)
CICS (755)
DB2 (1122)

IMS (143)
IDMS (107)
Natural (81)
ADABAS (26)

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

What is dbkey?

880

Explain about few error status codes of idms.

883

Discuss some of the terminology of idms.

925

Difference between fixed length and variable length records.

843

Explain storage architecture of idms.

845

Is automatic restart possible in jcl?

1221

How jcl work to handle various input output file operations?

1169

Is their any set of rules for dd? Explain.

1194

What is use of restart and how to use it?

1317

Can I share my data with other jobs? How?

1115

Are there any set of rules for the names of the steps used in a job?

1136

What is the significance of addrspc parameter in exec statement?

1210

What are the parameters that are used in creating a gdg?

1215

Differentiate between addressing mode and run mode.

1079

I want my job (careerride) to be executed in 1 minute and 2 seconds. How do I do that?

1236

Un-Answered Questions { IBM MainFrame }

Is db2 free?

1095

What is a set? What pointers are required, what are possible? How may sets be ordered?

1371

What is a db2 collection?

1046

Can you tell me how can you find out the # of rows updated after an update statement?

1101

A word in the computer memory is identified by_________

1004

What are the contents of a dclmgen?

1128

What is the use of disp parameter?

1141

What is the maximum size of varchar data type in db2?

1136

What statement marks the beginning of an in-stream or cataloged procedure in jcl and assigns default values to parameters defined in the procedure?

1318

What is an ook-rec in idms?

872

How can a jobs execution priority be modified?

1293

File1 has 100 records and file2 has 200 records I want to copy 50 records which are in both file into file3?

928

How can you quickly find out the # of rows updated after an update statement?

1049

What are various loop types supported by rexx?

948

what is the use of IEBGENER utility?

1172

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