MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

IBM MainFrame (5234)
IBM AS400 (1355)
IBM PL/1 (31)

MainFrame Interview Questions

Questions Answers Views Company eMail

What is the maximum Key length of a KSDS dataset

2 4998

What is dummy parameter in JCL??

TCS,

3 7843

Can AnyOne tell me how to read join logical file in rpg from starting to end?

2 5096

suppose we have 10 members in physical file and i have to use 4 out of 10 so how can we read this in RPG

TCS,

3 6230

Suppose we have 10 records with same name and we are reading using READE,after 4 record i have to use CHAIN what is the output

3 5371

How can we change element of compile time array?Can we do so

TCS,

1 4301

Suppose in CL we reach at end of file and again we have to reach from 1 record

TCS,

3 6418

Difference between RESET and CLEAR

TCS,

1 9037

How can we call CL program to RPG? How many number of parameter we can pass

TCS,

2 5825

Suppose we have one database file and it is used by 5 programs and in 3 program we have to add some records in datbase file s what is the impact on other program?

1939

How can you delete a record from a file in RPG without using DELETE oppcode?

UST,

2 6550

Why there is invention of RPG if we can do insert update delete in CL through SQL.Why the rise of RPG?

Infogain,

1 4359

we are sending data of physical file to screen design and it is showing no record why?

NTT Data,

1 5480

Can anyone answer me when we will go for LF without key fields

HCL,

4 7797

suppose there are 100 records and i want to read records between 60-70 how we can read this 10 records in rpg

Polaris,

2 6677

Un-Answered Questions { MainFrame }

Is the order of the when clause important in an evaluate statement? Is the order of the when clause significant in an evaluate statement?

966

Why do we bind in db2?

1224

1) SORT FIELDS=(20,4,CH,D,10,3,CH,D) OUTREC FIELDS=(7:20,4,C' FUTURE ',20,2,10,3,1Z,1,9,13,7, 24,57,TRAN=LTOU,6X'FF') This example illustrates how a fixed-length input data set can be sorted and reformatted for output. The SORTIN LRECL is 80 bytes. The reformatted output records are fixed length with a record size of 103 bytes. SOLRF (the IBM-supplied default) is in effect, so unless the SORTOUT LRECL is specified or available, it will automatically be set to the reformatted record length of 103. in the above example i have some doubts that a) sort fields=(20,4,CH,D,10,3,CH,D) -what exactly it does and this fields related to output record fields or input record fields b)outrec used to refprmat the records after sorting that means could please reply me as soon as possible Thanks. Venkat

7841

Explain how can you do the explain of a dynamic sql statement?

1139

What happens when we move a comp-3 field to an edited (say z (9). Zz-)?

1420

What is the compute verb? How is it used?

1158

what are the basic features of seu?

1220

what is amode(24), amode(31), rmode(24) and rmode(any)?

1161

What is mainframe database?

922

What do you mean by the term fct?

987

Is the primary key a clustered index?

1163

Explain identify whether a call statement is a static or dynamic call?

1019

which are the string manipulation opcodes?

1095

How can return codes be tested before execution of a job step?

1500

explain icm instruction?

1102

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