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

Name some of the JCL statements that are not allowed in procs.?

1 16154

What is primary allocation for a dataset?

4 15454

What is the difference between primary and secondary allocations for a dataset?

8 49102

How many extents are possible for a sequential file ? For a VSAM file ?

3 18954

What does a disposition of (NEW,CATLG,DELETE) mean?

3 20144

What does a disposition of (NEW,CATLG,KEEP) mean?

Cap Gemini,

1 13451

How do you access a file that had a disposition of KEEP?

3 19379

MOD, DELETE; What does a disposition of (,DELETE) mean ?

3 12254

What is the DD statement for a output file?

3 10277

What do you do if you do not want to keep all the space allocated to a dataset?

2 7206

What is DISP= (NEW,PASS,DELETE)?

HCL,

3 32509

How do you create a temporary dataset? Where will you use them?

IBM,

2 23057

How do you restart a PROC from a particular step?

5 43526

How do you skip a particular step in a proc/JOB?

CSC, CTS,

5 31177

A PROC has five steps. Step 3 has a condition code. How can you override/nullify this condition code?

IBM, Wipro,

5 39957

Un-Answered Questions { IBM MainFrame }

What is rct?

1298

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

1091

What is the information associated with sysibm.syslinks table?

1173

suppose I have 1000 rows in a db2 table. I want to update first 100 records, how do I do it?

1171

Explain sorting techniques in cobol program? Provide the sort file definition, the sort statement, its syntax and meaning

1149

Why would you use find and get rather than to obtain?

1270

If a (+1) generation dataset is created in the first step of a job, how can it be referenced in later steps of the same job for input?

1387

What are some jcl statements that are not allowed in procedures?

1292

What is find and read operation in adabas file?

973

Explain the difference between link and xctl?

1027

Cursors can be declared in both working-storage & procedure division, agreed. But is there any difference? If could you please suggest what is the difference

1549

When you are obtaining next within a set and get a end of set return code, on what record are you now current in idms?

869

Name and explain the type of locks?

1023

Explain the maximum number of segment types allowed for a single database?

2335

Explain db2.

1089

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