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

I've one sequential file, That file contains millians of Junk & CHAR recoreds example File 1 ,,,,,...,,,.....,.,.INFOSYS.....,,,,,,,,,,,WIPRO..........., ,...,..,. My questions is : I want omit the 44th posstion to 4 CHAR (WIPRO) remaining things I want output file (including Junk CHAR also)... How can we slove this problem & give me a syntax. Please provide the result as soon as possible.

CTS,

5 11119

i have two flat files.i want to select one record from that file by using jcl.for example file1 contains emp no,name,joining date. file2 has same details.emp no is primary key. i will give empno.that emp details send to outfile.please let me know if any one knows it.give sample code.

TCS,

1 7369

i would like to know under what circumstance the object will get locked on AS400.

IBM,

5 11333

How to find in aparticular step how many versions a paricular gdg base have?

TCS,

4 19179

Can we use an equated value as operand for an MVC instruction? Reason for the same

IBM,

8 13503

What are db2 error codes -305 and -407. What is the difference between these 2 error codes ?

1 7909

what r drawbacks of OPM? Why do we go for ILE RPG?

1 10847

How can I find the maximum value of a field in a file while reading the file dynamically? without using sort function. Suppose i have a file with fields Timestamp, description, teamname, teamnumber.. i have read the file till end and find the maximun value of timestamp which is not in sorted order.. can we use function max(timestamp)?

CGI,

1 13015

What are the steps to retrieve the records from Journal file...?

1 11756

I have the transaction name for cics screen.. With the transaction name, how will I find the cics program written for the transaction and BMS map program also...

CGI,

4 16362

5 rows are inserted to a DB2 Table. Next 3 of those are updated, then a rollback is issued. What would happen when the rollback is issued?

2 6275

if there is a table with huge number of records and if i want to extract only first 3 records from the table, what query i have to provide to retreive first 3 records

UST,

4 8139

Is it possible to mutliply a comp variable with an comp-3 variable. Will there be any error if i do it?

IBM, UST,

3 10167

If i have defined an temperory dataset in step2, how can i call back or use the same dataset in step5 of the same job

UST,

4 10102

i hav created a program and moved to production but failed to create the table which is been used in the program. the program shows error as soon as it is moved or installed in production or shows error during its runtime. what is the sqlcode for this error

UST,

3 7277

Un-Answered Questions { MainFrame }

which transient data queue support ati?

1169

What is an area sweep?

900

What is the mainframe testing?

997

How to execute stored procedures?

1141

What is the purpose of idcams?

1069

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

1252

How is data retrieved from multiple tables using a single sql statement?

1046

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

1058

define a output queue?

1605

What is amode(24)?

1251

What is basic difference between directory and pds in ibm mainframe?

1190

Explain how DSECT parameter is used in BMS ?

1218

Explain dclgen.

1234

What is the reason behind not using select * in embedded sql programs?

1130

name few ibm supplied libraries?

2144

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