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

Brief description of inline procedure of jcl.

1329

How would you understand error(execution phase)?

1327

What are the difference between jcl and jes?

1666

How gdg are concatenated?

1173

What is check constraint. Explain with example.

1165

What is dbrm? When it will be created?

1092

Is it possible to alter a table – for example adding a column, when another user is accessing or updating some columns?

1148

What is dbrm? What it contains?

1219

What does sqlcabc has?

1100

What is the difference between cursor stability and repeatable read isolation levels?

1244

How to execute stored procedures?

1179

What is sqlca?

1133

Are view updateable?

1095

How and when does the db2 enforces the unique key?

1151

What are sqlcodes –803,-805, -811, -818,-904,-911,-913,-101, +100?

1242

Un-Answered Questions { IBM MainFrame }

What is rmode(24)

1199

Explain the biggest disadvantage of using a vsam dataset?

1099

What are packages in db2?

1078

What is the role of union all and union

1196

Our issue is there seems to be a disconnect, or no link, between our SELECT statement and our SD. We had SELECT SORT-FILE and SELECT SORT-FILE ASSIGN TO SORTWRK. ASSIGN TO SORTWRK1 SORTWRK2 SORTWRK3 SORTWRK4. with SD SORT_FILE RECORD CONTAINS 7833 CHARACTERS. In either case, at run time, the system ignored our SORTWRK# DD statements and allocated 16 sort works with the SORTWK## naming convention. Any ideas why the system does not recognize the connection? We do not even need the SORTWRK DD statements. Thanks

3019

What are the cics tables?

1121

What is cascading rollback?

1285

how do u start your process after conducting impact analysis ?

2173

What is iseries database?

1122

how do you round the addition or subtraction of two numbers in assembler? what does the following code do? change process tool(code changes from dev to prd) the changes made to your code should be effected in live. How the process takes place. That is how can you move the code changes from development to production?

1170

What are the different data types in cobol?

1521

What is with ur in db2?

1390

What is db2 catalog database?

1093

what is the right time for using in-line perform?

1101

Explain the maximum number of levels allowed in ims db?

3832

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