AWS Database Blog

Category: Amazon RDS

Scale modern serverless applications with Amazon RDS Proxy for SQL Server

Many applications, including those built on modern serverless architectures, can have a large number of open connections to the database server and may open and close database connections at a high rate, exhausting database memory and compute resources. Databases can also suffer from transient failures, impacting application availability. Finally, applications need to maintain database credentials to […]

Connect an on-premises application server to Amazon RDS on Outposts

AWS Outposts rack brings native AWS services to virtually any customer data center or on-premises facility. Outposts is a fully managed service that extends AWS infrastructure, services, APIs, and tools to customer premises. In this post, we detail the connectivity required to connect on-premises applications to Amazon Relational Database Service (Amazon RDS) on Outposts. For […]

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 […]

Options to run deprecated major versions of Oracle databases on AWS

Oracle Database version 12c is past end of support, as announced by Oracle. Oracle 12c Release 1 ( stands unsupported beyond March 31, 2022, and Oracle 12c Release 2 ( is unsupported beyond July 31, 2022. After these dates, Oracle no longer releases Critical Patch Updates for these versions. To ensure that our customers continue […]

Managed Oracle Data Guard Switchover with Amazon RDS for Oracle

Amazon Relational Database Service (Amazon RDS) for Oracle now supports a fully managed, switchover-based role transition for Oracle Database replicas using Oracle Data Guard. You can initiate a switchover to a replica that is mounted or open read-only and the replicas can reside within an Availability Zone of a Region, across an Availability Zones of […]

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 […]

Create an audit trail for an Amazon Aurora PostgreSQL table

Many companies need to maintain an audit trail to track updates to their data. For compliance and other reasons, they’re required to preserve a history of all updates and deletes made to any given record in any given database table. For example, a foreign exchange transaction between two global banks includes a set of payment […]

Parallel vacuuming in Amazon RDS for PostgreSQL and Amazon Aurora PostgreSQL

PostgreSQL is a powerful open-source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance. AWS offers Amazon Relational Database Service (Amazon RDS) and Amazon Aurora as fully managed relational database services. Amazon RDS for PostgreSQL and Amazon Aurora PostgreSQL-compatible edition makes […]

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, […]