AWS Database Blog
Identifying and resolving performance issues caused by TOAST OID contention in Amazon Aurora PostgreSQL Compatible Edition and Amazon RDS for PostgreSQL
In this post, we explore the challenges of OID exhaustion in PostgreSQL, focusing on its impact on TOAST tables and how it leads to performance issues. We will cover how to identify the problem by reviewing wait events, session activity, and table usage. Additionally, we discuss practical solutions, from cleaning up data to more advanced strategies such as partitioning.
Managing object dependencies in PostgreSQL: Removing dependent objects (Part2)
In PostgreSQL, object binding (or dependencies) encompasses the connections existing among various database elements. These interdependencies hold significant importance when it comes to the management and modification of objects within the database. They ensure that adjustments made to one object don’t inadvertently disrupt other dependent objects. This series is divided into two posts. In the […]
Managing object dependencies in PostgreSQL – Overview and helpful inspection queries (Part 1)
In PostgreSQL, object binding (or dependencies) encompasses the relationships existing among various database elements. These interdependencies hold significant importance when it comes to the management and modification of objects within the database. They ensure that adjustments made to one object don’t inadvertently disrupt other dependent objects. For instance, when a view relies on a table, […]
Impactful features in PostgreSQL 15
PostgreSQL is one of the most popular open-source relational database systems. The product of more than 30 years of development work, PostgreSQL has proven to be a highly reliable and robust database that can handle a large number of complicated data workloads. AWS offers services that make PostgreSQL database deployments straightforward to set up, manage, […]
Manage case-insensitive data in PostgreSQL
It’s important to be aware of the case sensitivity of text data in PostgreSQL when performing queries or comparisons to ensure that the results match your intended expectations. Case also affects how the database performs sorting operations. By default, PostgreSQL is case sensitive when sorting or comparing string values. For example, PostgreSQL considers “amazon” and […]
Generate Excel workbooks from Amazon RDS for PostgreSQL or Amazon Aurora PostgreSQL
July 2023: This post was reviewed for accuracy. When using databases, you may need to move data into different systems, including other databases or other tools, to perform different analysis. One method to do this is through flat files, such as comma-separated value lists (CSVs), as these let you transfer data in a common format […]
Troubleshoot network connectivity to Amazon RDS databases using VPC Reachability Analyzer
July 2023: This post was reviewed for accuracy. Amazon Virtual Private Cloud (Amazon VPC) enables you to provision a logically isolated section of theAWS Cloud where AWS resources such as Amazon Relational Database Service (Amazon RDS) DB instances can be launched in a virtual network you define. When creating an Amazon RDS DB instance, you […]
Overview of security best practices for Amazon RDS for PostgreSQL and Amazon Aurora PostgreSQL-Compatible Edition
July 2023: This post was reviewed for accuracy. Security is a key factor to consider when choosing or migrating to a database. Cloud security at AWS is the highest priority. Security and compliance is a shared responsibility between AWS and the customer. This shared model can help relieve your operational burden, because AWS allows you […]
Convert the NUMBER data type from Oracle to PostgreSQL – Part 2
July 2023: This post was reviewed for accuracy. An Oracle to PostgreSQL migration in the AWS Cloud can be a multistage process with different technologies and skills involved, starting from the assessment stage to the cutover stage. For more information about the migration process, see Database Migration—What Do You Need to Know Before You Start? […]
Convert the NUMBER data type from Oracle to PostgreSQL – Part 1
July 2023: This post was reviewed for accuracy. An Oracle to PostgreSQL migration in the AWS Cloud can be a multistage process with different technologies and skills involved, starting from the assessment stage to the cutover stage. For more information about the migration process, see Database Migration—What Do You Need to Know Before You Start? […]







