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 happens if both JOBLIB & STEPLIB is specified ?

1138

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

1121

If I have limited experience with Rexx or it's been a long time since I've used it, what kind of help is available to get me started?

897

Can I combine uni-REXX with a compiled language in my application? What application programming interfaces are available? For example, can I share variables between uni-REXX and a compiled language?

895

What is the difference between ooRexx and IBM's Object REXX for Windows?

1080

When will a port of ooRexx to "XYZ" be available?

881

What is ENQ?

1069

What is DEQ?

1038

How can tablespace be moved to another dasd volume that is allocated for that tablespace?

1233

Mention the downsides of page level lock.

1159

What is concurrency?

1226

Explain the function of data manager.

1042

Mention a credible reason why select* is never given preference in an sql program that has been embedded.

1186

In case if at some point of time db2 is down, would that impact the pre-compilation process of a db2-cobol program?

1042

Define check constraint.

1073

Un-Answered Questions { IBM MainFrame }

What is the comaera?

1254

can you please let me know if there is any walkins for COBOL/PLI/DB2/IMS/JCL in pune other than IBM and ITC infotech

2425

What is the function of the steplib dd statement?

1192

Explain the system transid cemt?

1089

Which mode is used to operate the sequential file?

1198

What is the biggest disadvantage of using a vsam dataset?

1127

Explain how do you terminate an already issued delay command?

999

can oorexx run ibm object rexx programs?

1004

Whats the difference between search & search ALL?

6515

If DB2 query returns in null value, how do you work with it in PL/1?

2360

What is the function of dd name parameter with a 2 part structure; audit.report?

1232

How to execute stored procedures?

1126

Explain how can the attributes of one sms dataset be copied to another dataset?

1210

What are fset, frset?

1006

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

1217

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