AWS Database Blog

Category: Technical How-to

Stream data with Amazon DocumentDB and Amazon MSK using a Kafka connector

A common trend in modern application development and data processing is the use of Apache Kafka as a standard delivery mechanism for your data pipeline and fan-out approach. Amazon Managed Streaming for Apache Kafka (Amazon MSK) is a fully managed, highly available, and secure service that makes it simple for developers and DevOps managers to […]

Automated testing of Amazon Neptune data access with Apache TinkerPop Gremlin

Amazon Neptune, a fully managed graph database, is purpose built to work with highly connected data such as relationships between customers and products, or between pieces of equipment within a complex industrial plant. Neptune is designed to support highly concurrent online transaction processing (OLTP) over graph data models. Neptune supports both property graphs, which you […]

Build a CQRS event store with Amazon DynamoDB

The command query responsibility segregation (CQRS) pattern, derived from the principle of command-query separation, has been popularized by the domain-driven design community. CQRS architectures that use event sourcing save generated events in an append-only log called an event store. By using event sourcing, you can, among other benefits: Design applications to update a database and […]

Convert­ Oracle partitions and sub-partitions to Amazon RDS for PostgreSQL or Amazon Aurora PostgreSQL

Organizations are looking to migrate on-premises Oracle database workloads to Amazon Relational Database Service (Amazon RDS) for PostgreSQL or Amazon Aurora PostgreSQL-Compatible Edition. Most heterogeneous database migrations present unique challenges. One among them is converting Oracle schemas with partitioned (and sub-partitioned) tables to PostgreSQL-compatible partitioned tables. PostgreSQL declarative partitioning is a flexible way to manage […]

Validate database objects post-migration from Microsoft SQL Server to Amazon RDS for MySQL and Amazon Aurora MySQL

Database object validation plays a key role in the database migration process. It’s the process of determining whether all the source database objects have been successfully migrated to the target database by comparing their types and counts. If you skip the validation phase, you may encounter runtime errors due to missing database objects, which can […]

Reduce database patching downtime in Amazon RDS Custom for Oracle using Oracle Data Guard Standby-First Patch Apply

Most enterprise customers have high uptime requirements for their mission-critical applications. Their businesses can’t afford application downtime and have requirements for minimal or near-zero downtime patching ability for their application and databases. The infrastructure used by the backend Oracle databases for those business-critical applications must be able to support these high uptime needs. When migrating […]

Migrate Amazon Aurora across AWS Regions with minimum downtime using Aurora Global Database

Amazon Aurora is a relational database management system (RDBMS) built for the cloud with full MySQL and PostgreSQL compatibility. Aurora is designed to take advantage of the cloud in areas of scalability, availability, and durability, as well as combine the speed and reliability of high-end commercial databases with the simplicity and cost-effectiveness of open-source databases. […]

Automate schema version control and migration with Flyway and AWS Lambda on Amazon Aurora PostgreSQL

Monthly releases are always hectic, and companies face challenges with SQL deployments and schema versioning. It’s very time-consuming when multiple developers are developing code and need to run multiple SQL files across multiple production databases. To maintain environment integrity and consistency across applications, code and schema changes need to sync across multiple non-production and production […]

Recreate an Amazon RDS Custom for Oracle database: Part 2

In this series, we discuss best practices and step-by-step instructions to perform common customizations on Amazon Relational Database Service (Amazon RDS) Custom for Oracle without breaking the support perimeter: Part 1 covers customizing the time zone and character set of the database Part 2 (this post) discusses customizations such as changing the default block size, […]

Make configuration changes to an Amazon RDS Custom for Oracle instance: Part 1

Amazon Relational Database Service (Amazon RDS) Custom is a managed database service that provides the flexibility to customize your database, underlying server, and operating system configurations to support applications that require more control than a typical managed RDS provides. Amazon RDS Custom for Oracle is built for legacy, custom, packaged applications and any application that […]