Which two Oracle Database features use database services?

Database services in Oracle are used to manage how resources are allocated and how workloads are managed within the database. The features that use database services are: B (Correct): Database Resource Manager (DBRM) uses services to control resource allocation to different workloads. It ensures that resources are assigned to the most critical tasks first, based on the service associated with the workload. E (Correct): Oracle Scheduler can also utilize database services. Jobs in Oracle Scheduler can be assigned to different services to control resource allocation and prioritization. The other features mentioned are related to SQL performance but do not directly utilize database services in the way Resource Manager and Scheduler do: A: Oracle Automatic Reoptimization is a feature that allows the database to automatically improve the execution plan of a SQL statement after it is executed, based on the actual performance metrics, but it does not directly use database services. C: Oracle SQL Performance Management involves various components of SQL tuning and monitoring, but it does not use database services to operate. D: Oracle SQL Tuning Advisor provides advice on how to tune SQL queries for better performance. While it can be used in conjunction with services for managing and analyzing workloads, it doesn't use services in its core functionality. Reference: Oracle Database Administrator’s Guide: Administering Services Oracle Database Administrator's Guide: Managing Resources with Oracle Database Resource Manager Oracle Database Scheduler Developer’s Guide: Using the Scheduler