Some of the important Mainframe Interview Questions are listed below!!
1. Difference between STEPLIB and JOBLIB?
2. What is the use of MSGLEVEL in the job card?
3. In Which step timestamp is generated in the DB2-COBOL program compilation?
4. What is the picture clause of TIMESTAMP?
5. Difference between COMP and COMP-3?
6. What is the use of INSPECT statement?
7. How do you compare two files in COBOL?
8. What is Indexing?
9. What is the maximum time limit in TIME parameter?
10. How to extract the duplicate records in a file?
11. How to copy only 100 records from 200th record?
12. What are the mandatory DDNAMEs required using IDCAMS utility?
13. What is the specialty of IEFBR14 utility?
14. Which utility is used to load and unload records from DB2 tables?
15. What are the ways to pass data to a COBOL program?
16. What is the use of SPLIT command in SORT utility?
17. What is the use of SUM=NONE command in SORT?
18. Difference between INREC and OUTREC?
19. Expand COBOL?
20. Explain DB2-COBOL program compilation steps?
21. While using cursor, in which command the query is executed?
22. Use of cursors?
23. What is SQLCA?
24. Difference between STOPRUN and GOBACK.
25. How do you set max-cc from a COBOL program?
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