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 SDSF?

IBM,

13 22081

What will happen if we move SPACES to numeric field and ZEROES to alphabetic field?

T systems,

7 31604

What are ISOLATION LEVELS? Where do we need to specify them?

EXL,

3 10735

What are ISOLATION LEVELS? Where do we need to specify them in compiling JCL (Exactly which statement and what is syntax for it)?

T systems,

2 9610

TIME parameter in JOB statement or EXEC statement specifies What type of time (CPU time or execution time)?

CTS,

5 15718

15. Secondary indexes can be used with following databases a. HSAM,HISAM,HIDAM b. HIDAM, HISAM c. HDAM, HISAM, HIDAM d. All the above

2 8339

What are the special considerations of the PROCOPT field based on the type of operation your program performs

3 8422

Which command code can be used for backing up IMS database?

6 11342

Can a variable length segment be declared in IMS? If yes, what is the structure; If no, why?

2 8648

What are the ways to mapping external control block? a. ENTRY b. PROCEDURE DIVISION USING c. CALL ‘DLITCBL’ d. ALL ABOVE e. A & B

EDS,

4 11466

Write the format of program starting from identification division for checkpoint restart logic.

1 7822

How do I declare the KSDS vsam so that I can store a reocrd with variable length?.

2 11353

What are the default system and catalog libraries in JCL?

Infosys,

2 12167

Hello All, We have requirment to Replace BMC Db2 Load product thru CA FAST LOADPlus product. Do anyone have JCL to for FAST LOADPLUS and what all are thing need to take in consideration.

IBM,

2781

I am new to rexx db2 ,can anyone help me by expalinin how to code the db2 queries using rexx,and also plz send some link and examples using db2 queries.

3 11870

Un-Answered Questions { IBM MainFrame }

what is difference between cobol and cobol/400

23087

What is the difference between binary search and sequential search?

1135

Explain the processing modes available in ims db?

3678

What is dbkey? Explain.

906

Explain what you understand by passing by value.

1206

What is the difference between general testing and mainframe testing?

1174

How to code these statements in JCL: CLEANUP INITIAL(NO) RESTART(NO) DYNALLOC(NO) job definition..?

2325

Which is the default, TEST BEFORE or TEST AFTER for a PERFORM statement?

1398

Can a Search can be done on a table with or without Index?

1335

what is use of space parameter in dd statement?

1333

Is the primary key a clustered index?

1206

write a cobol logic. i have file that has 10 records .1 record go to first output file and second record goes to 2 output and etc

1303

What is a dbrm in db2?

1081

What os does db2 run on?

1052

What is the syntax of JCL statement?

1295

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