Top Oracle WMS Interview Questions to Crack Your Next Big Job

Tech Leads IT

Sun, 03 Aug 2025

In today’s fast-paced supply chain environment, businesses rely on Oracle Warehouse Management System (WMS) to optimize warehouse operations and improve inventory accuracy. As a result, Oracle WMS professionals are in high demand. If you’re preparing for an interview, you need to be ready for both functional and technical questions.

To help you succeed, we’ve compiled a list of the top 20 Oracle WMS interview questions along with insightful answers. Let’s dive in!

1. What is Oracle WMS, and how does it enhance warehouse operations?

A: Oracle WMS is a robust warehouse management system that helps organizations automate warehouse processes, improve inventory accuracy, and optimize space utilization. It enables features like real-time tracking, directed picking, putaway strategies, and barcode scanning to streamline operations.

2. How does Oracle WMS integrate with Oracle SCM and other ERP modules?

A: Oracle WMS is a key component of Oracle Supply Chain Management (SCM) and seamlessly integrates with modules like Inventory Management, Order Management, Procurement, and Manufacturing. This integration ensures real-time data flow and enhances supply chain visibility.

3. What are the key features of Oracle WMS?

A: Oracle WMS offers features such as:

• Directed putaway and picking
• License Plate Number (LPN) tracking
• Task management and labor tracking
• Barcode scanning and RFID integration
• Cycle counting and inventory accuracy management

4. What are the different types of picking methods available in Oracle WMS?

A: Oracle WMS supports multiple picking methods, including:

• Wave picking – Picks items in bulk for multiple orders
• Zone picking – Workers pick items in specific warehouse zones
• Cluster picking – Picks multiple orders simultaneously
• Batch picking – Groups similar items together for efficiency

5. What is the difference between WMS and Inventory Management?

A: While Inventory Management focuses on tracking stock levels, transactions, and item availability, WMS provides advanced warehouse functionalities like task management, putaway strategies, and automated picking rules to improve efficiency.

6. How do you configure Oracle WMS for a new warehouse?

A: Configuring Oracle WMS involves:

• Defining warehouse locations and zones
• Setting up warehouse rules (picking, putaway)
• Configuring task management and resource allocations
• Integrating with barcode scanners and mobile devices

7. What are warehouse rules, and how are they used in Oracle WMS?

A: Warehouse rules define how inventory is received, stored, picked, and shipped. They help optimize space utilization and streamline workflows. Examples include putaway rules, picking rules, and replenishment rules.

8. How does Oracle WMS handle putaway strategies?

A: Oracle WMS provides directed putaway, which assigns storage locations based on factors like:

• Zone-based putaway (e.g., fragile items in specific areas)
• FIFO (First In, First Out) and LIFO (Last In, First Out) rules
• Weight and volume constraints

9. What is Directed Picking and Directed Putaway in Oracle WMS?

A:

• Directed Picking: Guides workers to specific picking locations based on predefined rules.
• Directed Putaway: Automates inventory placement based on warehouse rules.

10. How does Oracle WMS support cycle counting?

A: Cycle counting is an inventory auditing technique where specific items are counted periodically. Oracle WMS supports:

• Scheduled and ad-hoc cycle counting
• ABC classification for priority-based counting
• Real-time reconciliation

11. What are the key tables used in Oracle WMS?

A: Some important tables include:

• WMS_RULES – Stores warehouse rules
• WMS_TASKS – Contains picking and putaway task details
• WMS_LPN – Manages license plate numbers (LPNs)

12. How do you set up mobile devices for Oracle WMS transactions?

A: Oracle WMS supports handheld devices that use mobile telnet applications. The setup includes:

• Configuring Mobile Supply Chain Applications (MSCA)
• Setting up user profiles and responsibilities
• Enabling barcode scanning and real-time data updates

13. Explain the role of LPN (License Plate Number) in Oracle WMS.

A: An LPN is a unique identifier assigned to a group of items for tracking purposes. It helps in:

• Grouping inventory for easy movement
• Improving tracking accuracy
• Reducing manual errors

14. What is Task Management in Oracle WMS, and how does it work?

A: Task management automates warehouse assignments by prioritizing and directing tasks like picking, putaway, and replenishment. It ensures efficient resource utilization and reduces processing time.

15. How does Oracle WMS handle label printing and barcode scanning?

A: Oracle WMS integrates with label printing solutions to generate barcode labels. It supports:

• Automatic label generation for inbound and outbound shipments
• Barcode scanning for inventory validation
• Integration with Zebra and Honeywell printers

16. How does Oracle WMS integrate with shipping carriers?

A: Oracle WMS connects with carriers like FedEx, UPS, and DHL through Oracle Shipping Execution, enabling:

• Real-time shipment tracking
• Automated label printing
• Rate calculations for freight optimization

17. What are the available APIs for Oracle WMS customization?

A: Oracle provides PL/SQL and REST APIs for WMS customization. Some key APIs include:

• INV_TRANSACTION_PUB for inventory transactions
• WMS_RULES_PUB for warehouse rules configuration
• WMS_TASK_PUB for task automation

18. How do you troubleshoot and resolve common Oracle WMS errors?

A: Common troubleshooting steps include:

• Checking error logs in Oracle Application Manager
• Verifying warehouse rule configurations
• Debugging custom APIs and integrations

19. How can Oracle WMS be customized to fit specific business needs?

A: Customization can be done using:

• Personalized picking and putaway rules
• Custom barcode label formats
• Integration with third-party logistics systems

20. Can you explain the role of material handling equipment in Oracle WMS?

A:Oracle WMS supports automated material handling equipment like conveyor belts, robotic pickers, and automated guided vehicles (AGVs) to improve efficiency and reduce manual labor.

Final Thoughts

Cracking an Oracle WMS interview requires a strong understanding of warehouse processes, system configurations, and integrations. By mastering these 20 Oracle WMS interview questions, you can confidently step into your next big opportunity.

Looking to enhance your skills with real-time Oracle WMS training? Join Tech Leads IT and get hands-on experience from industry experts.