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 Difference between SYSIN and PARM ?

IBM,

5 18478

What is default if we don't specify RD parameter at all ?

IBM,

1 4808

What is Automatic Restart ? EXEC PGM = PROG1, RD = R (Is it the Restart of a JOBSTEP or Restarting the execution of the program?) Do we Restart it or it automatically Restarts executing again and again ? Then when it will finish executing ? or After Abending, when we submit it again, then it is Restarted from the Last successful Checkpoint ? If some JOBSTEP is abending, what is the benifit to Restart it, WILL IT NOT ABEND AGAIN if you don't change the LOGIC ?

IBM,

1 6386

What does it mean by Restart and Checkpoint in JCL ? How are checkpoints being taken and what is their usage ? How to use Checkpoint macro on a JOBSTEP ?

IBM,

9755

Can we give TIME = (1440, 59) also ? or is TIME = (1439, 59) is the last one ?

IBM,

5 14865

If a JOBSTEP abends, AND without using COND also, all the subsequent steps execute, then what is the use of using EVEN ? Why do we use EVEN when without it also all the JOBSTEPs execute ?

IBM,

2 6552

Is CPU time assigned to a JOB and JOBSTEP BOTH, by default ?

IBM,

4 6843

Could you provide an example and its effect OF, Using COND on JOB and EXEC both ?

IBM,

4 6868

COND -> step1 . . step2, Step2, Executes if the CC of step1 is 0. But even if it is NOT 0 and if we dont give COND, will step2 be executed ?

IBM,

4 9411

IF WE GIVE COND on step3 then, What does the following mean ? And Just adding to that, All the below COND are VALID as per the specifications. (i) COND = (8,LT,step1,step2) ---(AND/OR ?) (ii) COND = (8,LT,step1,step2, ONLY), (iii) COND = (8,LT,step1,ONLY) will it execute only if this condition is true or only if step1 ABENDS ? (iv) COND = (8,LT,step1,step2,EVEN), (v) COND = (8,LT,step1,EVEN) ?

IBM,

2 6468

How to release the Output HELD by using HOLD = YES on DD statement ?

IBM,

2 6200

Are all (i), (ii), (iii), (iv) of the below are VALID to reference a temporary dataset ? STEP2 DD1 DD DSN = &&TEMP STEP3 DD2 DD (i) DSN = TEMP (ii) DSN = *.TEMP (iii) DSN = *.STEP1.DD1 (iv) DSN = *.STEP1.DD1.ONE

IBM,

8 10483

Can a temporary dataset be converted to permanent dataset and vice-versa in the middle of a job ?

IBM,

4 9507

We can use PASS with permanent datasets also. THEN Which is the condition in which we may use PASS (instead of KEEP) with permanent data sets, while there is no need to specify UNIT and VOL for them like temporary data sets (in cas we use KEEP for permanent data sets) ?

IBM,

2417

IBM,

2234

Un-Answered Questions { MainFrame }

List the different jcl statements that are not permitted in the procedures?

1087

what does the opcode free do?

1963

How many maximum record format a logical file have?

997

what do you mean by the cobol record key clause in vsam?

1023

Explain ibm z?

1027

What are concurrency issues?

1107

What is a set in idms?

850

Explain Introduction abt Ibm framework

2166

What are the different options in OPTIONS?

1503

Explain the difference between the xctl and link commands?

1122

Define a path?

1093

What is the information associated with sysibm.syslinks table?

1130

What is a dbrm in db2?

1031

which cics service transaction is used to gain accessibility to cics control tables? Mention the one that has the highest priority.?

1187

What is the need for a secondary index in ims?

1079

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