as400 consultant Interview Questions and Answers

1. What is your experience with AS400 (iSeries) systems?

   • Answer: I have [Number] years of experience working with AS400 systems, encompassing various aspects such as system administration, database management (DB2), application development (RPG, COBOL, CL), and troubleshooting. I've worked on projects involving [mention specific projects or industries, e.g., ERP implementations, data migration, system upgrades]. My experience includes working with different AS400 models and operating system versions.

2. Describe your experience with DB2 for i.

   • Answer: I have extensive experience with DB2 for i, including database design, development, optimization, and administration. I'm proficient in SQL and understand the intricacies of the DB2 for i architecture. My experience includes creating and maintaining database objects, optimizing queries for performance, implementing backup and recovery strategies, and managing user access and security.

3. What programming languages are you proficient in for AS400 development?

   • Answer: I am proficient in RPG (both RPG III and RPGLE), COBOL, and CL. I also have experience with [mention any other languages like SQL, Java, etc., if applicable]. I understand the strengths and weaknesses of each language and can select the appropriate one based on project requirements.

4. Explain your understanding of AS400 security.

   • Answer: AS400 security is crucial. My understanding encompasses user profile management, authorization lists (AUTHLs), object authorities, and the use of security features like encrypted data and audit journaling. I'm familiar with implementing robust security measures to protect sensitive data and prevent unauthorized access. I also understand the importance of regularly reviewing and updating security policies.

5. How do you troubleshoot AS400 performance issues?

   • Answer: My troubleshooting approach involves analyzing system logs (e.g., job logs, system operator messages), monitoring system resources (CPU, memory, disk I/O), and using performance monitoring tools. I can identify bottlenecks, optimize queries, and adjust system parameters to improve performance. I also utilize tools like WRKACTJOB, DSPPGM, and STRSQM to analyze system activity.

6. Describe your experience with AS400 backup and recovery.

   • Answer: I have experience with various AS400 backup and recovery methods, including SAV, RST, and tape backups. I understand the importance of creating comprehensive backup strategies and testing recovery procedures regularly. I'm also familiar with using tools to manage and automate backup and recovery processes.

7. What is your experience with AS400 system upgrades and migrations?

   • Answer: I have [mention level of experience] experience with AS400 system upgrades and migrations. This includes planning, executing, and testing upgrades to newer OS versions and migrating data and applications between different AS400 systems or platforms. I understand the importance of thorough planning and testing to minimize downtime and ensure data integrity.

8. Explain your familiarity with AS400 high availability and disaster recovery.

   • Answer: I understand the importance of high availability and disaster recovery for critical AS400 systems. My experience includes implementing and managing high availability solutions using technologies like mirroring and clustering. I also have experience in developing and testing disaster recovery plans to ensure business continuity in case of system failures or disasters.

9. How do you handle AS400 application development projects?

   • Answer: My approach to AS400 application development involves understanding project requirements, designing the application architecture, developing code, testing thoroughly, and deploying the application. I follow best practices for software development and utilize version control systems to manage code changes. I also collaborate effectively with team members and stakeholders throughout the development lifecycle.

10. Describe your experience with AS400 output management.

    • Answer: I'm familiar with managing AS400 output, including spooling, printing, and electronic document delivery. I can configure output queues, manage printer resources, and implement solutions for efficient output distribution. I understand how to optimize output processes to reduce bottlenecks and improve overall efficiency.

11. What is your experience with using WRKSPLF?

    • Answer: I frequently use WRKSPLF to manage spooled files. I know how to hold, release, delete, and display spooled files. I also utilize it to troubleshoot printing problems and to manage the output queue efficiently.

12. How familiar are you with the concept of logical partitions on AS400?

    • Answer: I understand logical partitions allow dividing a single physical AS400 system into multiple independent logical systems. This improves resource management and allows for better isolation of different applications or departments. I have experience [mention level of experience, e.g., configuring, managing, or troubleshooting logical partitions].

13. Explain your understanding of AS400's integrated file system.

    • Answer: The integrated file system is a key feature of AS400, allowing seamless integration of different file types. I understand the strengths of this approach in terms of data management and security. I am experienced in navigating and managing files within this system.

14. How do you handle data migration from other systems to AS400?

    • Answer: Data migration requires a well-defined plan. My approach involves assessing the source and target systems, defining the migration strategy (e.g., using tools like DataStage, custom scripts, or native AS400 utilities), validating the data after migration, and implementing testing procedures to ensure data integrity.

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