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

Can we change a FB file to VB file in JCL? Please help

1 1766

write a cobol logic. i have file that has 10 records .1 record go to first output file and second record goes to 2 output and etc

1177

Which is not true about evaluate statement

2396

i have 10steps and i want run step3 and based on step3 i want execute step7,8,9,10?in jcl

1 2269

How to empty the records in jcl

1 1410

INREC AND OUTREC? HOW TO SPLIT 5K RECORDS TO DIFFERENT FILES IN A FILE IN COBOL? RESTART IN COBOL-DB2? ISOLATION LEVELS?

820

What is DYNSLT keyword? How do you perform selection using DYNSLT

1 1524

How can we read records for specific member in CL? AND rpg?

649

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

581

2 input fles: 2 flat files, with different number of records. both are having unique key for each record and already sorted in ascending order . match these files using unique key and in output only matching key value has to be written. please procide cobol logic

2548

How to fetch 1000 error records from VSAM file(Eg: 1000000 records present) while getting SOC7 abend ?

2396

How to traceback if I am getting SOC7 or SOC4 abend? List down the steps

5318

Step 1 RC 4 Step 2 Step 3 I want to know the COND parameter which can be coded in step 2 or 3. Step 2 should be executed based on Step 1 RC and Step 3 should not be executed based on step 1's RC

4837

What is one line to pass PARM from JCL to COBOL?

4904

Un-Answered Questions { IBM MainFrame }

Explain how DSECT parameter is used in BMS ?

1156

how many buffers are allocated to vsam ksds and esds?

1113

If we say that bms length of field = 0, then what does that mean?

1194

How to Get Information About the Tables?

1620

What is the main function of the sign-on table?

993

What is the usage of comp fields in cobol?

1133

Explain the function of dd disp parameter?

1052

What is the purpose of having vsam data space?

908

What is dbrm? What it contains?

1112

What is the difference between a schema and a subschema?

1838

can any one provide me the link for the db2 v7 & db2 v8 manual for Z/os? i need to know about the syntax of REORG in both versions & need to know the difference as well

2181

What are steplib and joblib? What for they are used?

1140

What is the default value(s) for an initialize and what keyword allows for an override of the default?

1157

is delete operation supported in an esds? Is rewrite operation possible in esds?

1050

What is buffer pool in the db2 database?

1047

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