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

Explain what a plan is?

CTS,

3 8788

What is a synonym ?

2 5635

What are the four lockable units for DB2?

1 6300

In a DB2-CICS program which is acts as co-ordinator and which is participant?

IBM,

1 5409

Describe what a storage group(STOGROUP) is?

2 10366

What is SPUFI?

4 17468

What is the difference between SYNONYM and ALIAS?

TCS,

6 28995

What is a data page?

1 4585

What is a subselect? Is it different from a nested select?

1 7866

When Can you be sure that a query will return only one row?

IBM,

4 8684

What is the SQL Communications Area and what are some of its key fields?

1 5515

How do you leave the cursor open after issuing a COMMIT? (for DB2 2.3 or above only)

2 9620

How many buffer pools are available in db2?

2 7224

What is the size of a data page?

IBM,

2 5883

What is the difference between CS and RR isolation levels?

1 8569

Un-Answered Questions { IBM MainFrame }

Explain How will you the specification of database file?

917

How can you access qsam (seq) files from cics?

1136

What is dclgen (declaration generator)?

1066

What is the pic clause for the hhmmss type of data fields?

957

how could you write a program in a structured format?

1002

What are catalog tables in db2?

1056

Kindly specify the pic clause for the hhmmss type of data fields?

1075

What does a ROLLBACK do?

1535

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

1052

Explain in DD statement what is the use of DCB parameter?

1153

What is the purpose of dd dummy statement?

1470

which cics command must be issued by the application program in order to gain access to the common work area (cwa)?

1145

How can we retrieve the total number of records in RPG & CLLE?

660

Program A (Normal COBBAT) calling a B Program (DB2COBOL, COBBATDB which is using a VSAM file. its a dynamic call. How we will handle VSAM file decleration in our from JCL from where we are running A PGM. And should we have PLAN for A pGM also. if possible can some one post a sample JCL. Thanks for help in advance.

5756

List out the data types available.

1160

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