- Describe different transaction isolation levels in DB2 and their implications.
- What SQL statements have you used extensively during development and support?
- Explain the effects of using CURSOR WITH HOLD with GROUP BY and ORDER BY clauses in your queries.
- How do you retrieve the current system date and time using DB2 and COBOL?
- Describe a situation where you encountered a JCL error code -904. What was the cause and how did you resolve it?
- How can you check for empty files and locate specific characters within files using JCL utilities?
- How do you reference the output dataset from a previous step in a JCL job with multiple steps?
- Explain the purpose and usage of COND=EVEN and COND=ONLY parameters in JCL.
- How do you manage the deletion of a GDG (Generation Data Group)?
- Explain how to declare and use host variables in COBOL programs.
- How can data be passed from a JCL job to a COBOL program?
- What happens when you encounter a SUM FIELDS = NONE condition in COBOL?
- Describe the compilation process for COBOL programs that interact with a DB2 database.