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 the COMMAREA(communications area)?

2 11408

Mention the 5 fields available in the symbolic map for every ?NAMED? field in the DFHMDI macro? Give a brief description of these fields (Not exceeding a line).

IBM,

2 13614

What is the function of the LOAD command?

IBM,

1 5242

What are the differences between an EXEC CICS XCTL and an EXEC CICS LINK command.

1 9499

What is the difference between START and XCTL ?

IBM,

3 8012

What is the meaning of BMS length of field = 0?

IBM,

1 8972

How and where is the TWA size set? .

IBM,

1 12075

What is the difference between LINK and XCTL ?

IBM,

1 7646

What is the EIB parameter and the CICS command used to implement Pseudo-Conversational technique using single PCT ? Single PPT entry?

IBM,

1 7418

Name some common CICS service programs and explain their usage?

IBM,

1 6100

What is the difference between EXEC CICS HANDLE CONDTION and an EXEC CICS IGNORE command?

IBM, TCS,

2 8980

Explain floating maps with illustration.

IBM,

1 4660

What is the difference between a RETURN with TRANSID and XCTL ?For example prog. A is issuing REUTRN with TRANSID to prog B. Prog A. is issuing XCTL to prog B?

3 29139

What is an AEY9 abend ?

IBM, Xansa,

4 25132

How do you fire a batch job from a CICS transaction ?

TCS,

2 10623

Un-Answered Questions { IBM MainFrame }

Tell about how do you eliminate the duplicates?

998

What is jcl in mainframe?

1196

can anybody post me about file-aid and changemen tools pls and give me reference if any mainframe guys are there

2371

HOw can I get the negative sign while deduct high value from low value

2255

How many maximum base registers we can have in a single program?

1099

What is db2 bind process?

1234

Define an aica abend?

1102

Are views updateable?

1149

Define cobol?

1391

Define concatenating?

1095

Let us say you have a collection of multiple maps in cics. So if you are asked to determine the exact storage space that is available in a symbolicmap, then how will you compute it?

1132

What is currency in idms?

961

What is a base cluste?

1087

Why is it necessary that file needs to be opened in I-O mode for REWRITE?

1318

Portfolio analysis application is an example of?

1129

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