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 21652

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

T systems,

7 31367

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

EXL,

3 10597

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 9504

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

CTS,

5 15512

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 8209

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

3 8269

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

6 11082

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

2 8537

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 11316

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

1 7724

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

2 11258

What are the default system and catalog libraries in JCL?

Infosys,

2 12072

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,

2727

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 11762

Un-Answered Questions { IBM MainFrame }

What are concurrency issues?

1097

What do you understand by the term “keyword” with respect to jcl and what is the opposite of the term?

1143

what is the resolution for sb37 error

9124

Explain cemt transaction commands?

1163

Hello, I have 3 years of exp as a mainframes tester in a leading IT company, now am looking to change my company. Could you please let me know, what are the interview questions/topics i should prepare. Your suggestions are truly valuable for me :) Thanks !!

1942

What's The Percentage Free Space ?

1224

How many types of page locks can be held in db2?

1043

Which component is responsible for db2 startup and shutdown?

1035

What is mainframe application testing?

1055

What is the difference between fixed length and variable length records?

874

What are bind parameters in db2?

1047

suppose program A is calling program B, at a time A will send 100 records but it has to send 500 records. how it will possible?

2091

Explain how do you access the records randomly in tsq?

1107

How to execute stored procedures?

1130

i want to maintain uniqueness on pdf without make lf??????????

2158

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