Learn why Amazon RDS is the best choice for migrating an Oracle database to AWS without rewriting the application. Understand its features and benefits for seamless migration.
Table of Contents
Question
A company is migrating an application that includes an Oracle database to AWS. The company cannot rewrite the application.
A. Amazon Athena
B. Amazon DynamoDB
C. Amazon RDS
D. Amazon DocumentDB (with MongoDB compatibility)
Answer
C. Amazon RDS
Explanation
Amazon Relational Database Service (Amazon RDS) is a service that provides managed relational database engines. Amazon RDS supports multiple database engines, including Oracle, MySQL, PostgreSQL, MariaDB, SQL Server, and Amazon Auror
A. Amazon RDS can be used to migrate an application that includes an Oracle database to AWS without rewriting the application, as long as the application is compatible with the version and edition of Oracle supported by Amazon RDS. Amazon RDS can also provide benefits such as high availability, scalability, security, backup and restore, and performance optimization.
Amazon Relational Database Service (Amazon RDS) is the correct choice for migrating an Oracle database to AWS when the application cannot be rewritten. Below is a detailed explanation of why Amazon RDS is the most suitable option:
Why Amazon RDS?
- Support for Oracle Database: Amazon RDS supports Oracle as one of its database engines, allowing businesses to migrate their on-premises or self-managed Oracle databases directly to a managed environment in AWS without changing the underlying database engine. This ensures compatibility with existing applications.
- Fully Managed Service: Amazon RDS automates administrative tasks such as backups, software patching, monitoring, and scaling. This reduces operational overhead and allows the company to focus on its core business rather than database management.
- Migration Tools: AWS provides tools like AWS Database Migration Service (AWS DMS) to facilitate seamless migration of data from on-premises Oracle databases to Amazon RDS for Oracle. These tools ensure minimal downtime during migration.
- High Availability and Scalability: Amazon RDS offers features like Multi-AZ deployments for high availability and read replicas for scaling read-heavy workloads. These capabilities make it a robust solution for enterprise-grade applications.
- Cost-Effectiveness: By eliminating the need to manage hardware or manually perform administrative tasks, Amazon RDS reduces costs associated with database maintenance while providing predictable pricing models.
Why Not the Other Options?
A. Amazon Athena: This service is used for querying data stored in Amazon S3 using SQL but does not support relational database management or Oracle-specific features.
B. Amazon DynamoDB: DynamoDB is a NoSQL database service and is not compatible with relational database workloads like Oracle.
D. Amazon DocumentDB (with MongoDB compatibility): DocumentDB is designed for document-based NoSQL databases and does not support Oracle or relational database models.
For migrating an Oracle database to AWS without rewriting the application, Amazon RDS is the most appropriate choice due to its support for Oracle, fully managed nature, and seamless integration with AWS migration tools.
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