1. Solid PL/SQL development experience
2. Expertise in SQL query writing and optimization
3. Experience with Stored Procedures, Packages, Functions, and Triggers
4. Knowledge of Joins, Indexes, Views, and Execution Plans
5. Filtering conditions using WHERE clause, usage of NOT IN to derive results
6. String manipulation functions, Data Type conversions
7. Optimize performance/techniques during MERGE operation
8. Understanding of Performance Tuning and Transactions
9. Hands-on experience with SQL Developer tools
10. Data Consolidation (Transform data from multiple tables into consolidated format)
11. Pipelined table function in PL/SQL and best practices
12. Nested blocks and scope of the variables
13. Recursive calls
14. Unix Basics (File Handling commands)