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 does mvs stand for?

IBM,

1 1975

when does a dataset go uncataloged?

IBM,

1302

what are the ways of passing data to a cobol program from jcl?

IBM,

1 2419

which parameter is used to check the syntax of a jcl without executing it?

IBM,

1359

what is use of dcb parameter in dd statement?

IBM,

1297

what is use of space parameter in dd statement?

IBM,

1274

which parameter is use to declare the name of dataset in dd statement?

IBM,

1254

a jcl has 2 steps. How to code the jcl such that if step1 abends, then step2 runs. Else, job terminates with step1?

IBM,

1 2598

what disp parameter we mention for creation of temporary dataset so that we can use it in later steps?

IBM,

1219

what are the various stages of job processing?

IBM,

1279

which statement is used to end the in-stream procedure in a jcl?

IBM,

1 1934

a set statement is used to define commonly used symbolic across job steps or procedures. It initializes the previous values in the symbolic names. It has to be defined before the first use of the symbolic names in the jcl. State whether true or false?

IBM,

1080

what happens in execution stage in job processing?

IBM,

1141

when can a job time-out occur? How to overcome that?

IBM,

1284

in a jcl, a large volume dataset is loaded to a table using bmcload in step1 and an image copy of the loaded table is taken using bmccopy in step2. Step2 abends because the image copy dataset cannot hold the volume of the table. How can this be rectified?

IBM,

1297

Un-Answered Questions { IBM MainFrame }

What is the mainframe testing?

978

What is the purpose of rollback and commit?

1191

Using alternate indexes in cics program?

1012

Is it possible to define dd statements as you want?

1111

If JOBA is in MSGW due to data decimal error and DUMP is generated and I found that Decimal field formatted with some special char which is coming from Input file amd file has millions of records. How I can find out on which record the error is occur. Please share your experience.....

2148

What is the need of running runstats in the test environment?

1074

Can we move alphanumeric incentive to the numeric field?

1043

Is db2 a database?

960

Why is master catalog used in vsam?

1115

What is the contrast between delimited by space and delimited by size?

957

Explain dbdgen process?

1093

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?

1133

What do you understand by the term notcat 2 – gs?

1239

What is the full form of adabas?

954

Is it possible to move an alphanumeric incentive to a numeric field?

997

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