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 are the kinds of job control statements?

3 8009

What is the meaning of keyword in JCL? What is its opposite?

1 7451

Describe the JOB statement, its meaning, syntax and significant keywords?

1 5041

Describe the EXEC statement, its meaning, syntax and keywords?

2 5845

Describe the DD statement, its meaning, syntax and keywords?

2 9298

What is a PROC? What is the difference between an instream and a catalogued PROC?

2 12572

What is the difference between a symbolic and an override in executing a PROC?

2 13643

What is RESTART? How is it invoked?

HSBC,

8 23551

What is a GDG? How is it referenced? How is it defined? What is a MODELDSCB?

3 9658

Explain concatenating datasets?

CTS,

2 9955

What is the difference between specifying DISP=OLD and DISP=SHR for a dataset?

2 9299

What is MOD and when would you use it?

3 7457

What are the keywords associated with DCB? How can you specify DCB information? What is the OS precedence for obtaining that DCB information, ie. where does the system look for it first?

2 8889

How do you designate a comment in JCL?

1 9382

What is the meaning of the EXEC statement keyword, COND? What is its syntax?

2 6013

Un-Answered Questions { IBM MainFrame }

how JCL works?

1268

Are you comfortable in cobol or jcl?

1049

How do you stop a db2 database in linux?

1014

which transient data queue support ati?

1160

What is a db2 package?

1060

how can you prevent more than one user from accessing the same transient data queue?

1089

How to Build a Row Condition?

1726

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

2965

What is the difference between read(1) and read work file once?

1043

what is an mdt (modified data tag)? Its menaing and use?

1143

What is the physical storage length of the data types: date, time, timestamp in the db2 database?

1160

Explain what happens when you issue a escape routine in a program? Will there be any compilation /run time erro?

973

What is meant by MDT? Furthermore, comment on FRSET and FSET ?

1136

write a program to read from a VSAM file , there will be a 5 records to create name. empno. resignation and address to update in a db2 table and call another program using dynamic call to find the matching fields in program 1 to update in db2 table. anybody pls send de program for dis ? thanks in advance...

2745

How to check last update on table in db2?

1060

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