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MainFrame Interview Questions
Questions Answers Views Company eMail

explain about maximum displacement and how to cross this limit?

IBM,

1143

how to retrieve the instream data in sysin?

IBM,

1139

how to pass the parameters from jcl to assembler pgm?

IBM,

1105

what is need of start 0? In steed of

IBM,

1092

Ap wkur,=p5 where wkur is a label?

IBM,

1135

how do you round the addition or subtraction of two numbers in assembler? what does the following code do? change process tool(code changes from dev to prd) the changes made to your code should be effected in live. How the process takes place. That is how can you move the code changes from development to production?

IBM,

1117

how to initialize a register to 0000?

IBM,

1133

What is a Foreign Key?

Tavant Technologies, Zensar,

1095

what is a corelated subquerry?

IBM,

1120

can all users have the privilage to use the sql statement select * (dml)?

IBM,

1163

What is the maximum number of columns in a db2 table?

IBM,

1278

B37 abend during spufi?

IBM,

1453

What is the maximum No of rows per page?

IBM,

1063

what are the parameter we cannot use in procedure? How many instream we can write in single jcl? Can we call instream to catalog and catalog to instream?

IBM,

1034

how could you write a program in a structured format?

IBM,

991


Un-Answered Questions { MainFrame }

I have a program with an Array of 5000 occurences which is being passed from 5 sub levels to the front end screen. Thess 5 programs using each 5*2 = 10 different arrays with size as 5000. This is causing the transaction to utilize more storage consupmtion. I am looking to reduce the storage consumption. As part of that initially i thought Dynamic array may solve my problem. After viewing the comments given i see its same as normal array. IS there any other way we can resolve this issue?

1641


if you wish to use the rewrite command how must the vsam file be opened?

1150


during input operation which indicator position is seton if there is a record lock?

1589


Can any one tell me that how we go for the compare,unit testing after changing requirement as per client request. this is very helpful for me when u give suitable (coading) exmple.

2146


What are the rules employed while naming the steps in a job?

1139


maximum number of subfiles that can be active for a single file is?

1697


how to compare two datasets without using superce because output is limited to 133 bytes

2103


Is condition checking possible in jcl?

1207


Define redefine and its syntax?

969


What is interval control?

1127


Define communication area?

990


How to Clear a Query Using the RESET Command ?

1713


Explain difference between call and link?

1089


How is it possible to do a cross-sysplex copy of a PDS dataset by running one JCL on the target sysplex? I tried to use IEBCOPY with SUBSYS & CSM as follows: //CSMTRAN1 EXEC PGM=IEBCOPY //SYSPRINT DD SYSOUT=* //SYSUT1 DD DSN=PDS-Dataset-name-from,DISP=SHR, // SUBSYS=(CSM,'SYSPLEXNAME-FROM') //SYSUT2 DD DSN=PDS-Dataset-name-to,DISP=OLD, // SUBSYS=(CSM,SYSPLEXNAME-TO') //SYSIN DD DUMMY This did not work. I always get the following error "IEB1071E DD NAME SYSUT1 IS SUPPOSED TO BE A PARTITIONED DATA SET BUT IT HAS NO DIRECTORY. EXPECT A TERMINAL I/O ERROR. (DS1LSTAR=X'000000' DS1DSORG=X'0000' JFCDSORG=X'0200') " The source dataset is a catalogued pds dataset with many entries. The target dataset is allocated in the same job some lines before the transfer. I got an example like this for PS datasets with IEBGENER. But for PO datasets there should be a similar possibility...

4052


Can you explain function of iebgener?

1025