Oracle Materialized View Causing Locks

I am looking for a skilled database professional who can help me with my Oracle database that is experiencing lock issues caused by Materialized View configuration. The ideal candidate should have experience in Oracle database management and be able to fix the issue while explaining the root cause.

Skills and Experience Required:
- Strong background in Oracle database management
- Knowledge of materialized views
- Familiarity with concurrency issues and query optimization
- Ability to diagnose and resolve configuration issues
- Excellent communication skills to explain the cause of the issue and the steps taken to fix it.