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Oracle Exadata Deployment Assistant (OEDA) offers multiple benefits for configuring and deploying Exadata systems:

Configuration Gathering and Rack File Creation: OEDA simplifies the setup of Exadata environments by collecting system-specific configuration details. It uses this information to generate the Exadata Rack configuration file, which outlines the optimal setup for the particular environment, streamlining the deployment process and ensuring compatibility with Oracle best practices​ .

Lifecycle Management CLI for Exadata Systems: OEDA includes a command-line interface (CLI) that facilitates various lifecycle management tasks, specifically designed for Exadata systems. This CLI helps in automating deployment steps, adjusting configurations, and updating system parameters, tailored specifically for Exadata’s hardware and software environment .

Oracle Enterprise Manager (EM) Cloud Control provides comprehensive monitoring and management for Exadata Database Machines, including:

Support for Database Machine Storage Expansion Racks: EM Cloud Control seamlessly integrates with the Storage Expansion Rack, allowing administrators to monitor both primary and expansion storage environments together, which is essential for large-scale deployments​.

Minimal Agent Installation: Cloud Control needs only one Oracle Management Agent on one compute node to monitor the entire Database Machine cluster, covering all compute and storage nodes. This is due to Exadata’s interconnect and resource-sharing capabilities, enabling centralized monitoring with minimal setup requirements​​.

Oracle Auto Service Request (ASR) on Exadata Database Machines is designed to proactively monitor and detect hardware and software issues. When a problem is detected, ASR Manager automatically opens a service request (SR) with Oracle Support. The primary focus of ASR is on hardware assets, such as storage servers, database servers, and network components, as well as software assets related to Exadata System Software and Oracle Database configurations​​.

To enable REST access to the MS process, you need to manually enable the REST services on each storage server by running the command cellcli -e "ALTER CELL ENABLE REST" and then configure authentication and authorization to ensure secure access. This is described in detail in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (Chapter 8, Securing the Exadata Database Machine).

https://docs.oracle.com/en/cloud/paas/exadata-cloud/csexa/access-rest-api.html