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

how do you reference the variable unblock file formats from cobol programs

1285

how do you reference the fixed unblock file formats from cobol programs

1180

Write a program that uses move corresponding.

1084

State the various causes of s0c1, s0c5 and s0c7.

1030

What do you understand by psb and acb?

1069

How to remove 2 duplicate records and copy only one using job control language?

1177

what is amode(24), amode(31), rmode(24) and rmode(any)?

1100

Write the code to count the sum of n natural numbers.

1154

What are declaratives and what are their uses in cobol?

1144

How do you reference the fixed block file formats from cobol programs

1163

how do you reference the rrds file formats from cobol programs

1506

Write a cobol program making use of the redefine clause.

1125

What do you understand by passing by reference and passing by content?

1 1543

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

1130

What are various search techniques in cobol? Explain.

1032

Un-Answered Questions { IBM MainFrame }

What are the 4 fields in dd statement?

1197

Are views updateable?

1083

What is idms?

813

I executed one job and I forget to save the final JCL. But took an XDC from SPOOL. Now I want to recover the JCL from XDC dataset. Is there any process to do this?. (Manually it takes a lot of time). Is there

3008

Which command is used to remove all rows from a table?

1053

What is the use of db2 optimizer?

1057

Explain the uses that are associated to tsq and tdq ?

1042

Give the format of using and giving in sort statement. What are the restrictions with it?

993

Explain how to move cursor to a particular field when position is not known?

940

What is db2 stogroup?

1104

What is the purpose of disp parameter?

1076

What is buffer pool and list some of them?

991

Categorize the mainframe manual testing?

953

What is the difference between comp and comp-3 usage?

1137

Outputs of explain are with matchcols = 0. What does this signify?

1002

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