RDS

AWS RDS Performance Insights comparison view showing two database instances running the same PostgreSQL OLTP benchmark workload simultaneously: on the left a db.r7g.xlarge Graviton3 instance showing 4200 transactions per second at 72 percent CPU utilization, and on the right a db.r8g.xlarge Graviton4 instance showing 5800 transactions per second at 71 percent CPU utilization, with both instances using the same PostgreSQL 16 engine version and gp3 storage configuration, the green throughput bars clearly higher on the Graviton4 instance at the same CPU consumption level, with a percentage annotation showing the 38 percent throughput improvement consistent with AWS Graviton4 benchmark data published in November 2024

RDS PostgreSQL on Graviton: Benchmarks, Cost Savings, and the RI Strategy That Stacks Both

| | aws, RDS
AWS Graviton processors have been available for RDS since 2021. As of 2026, four Graviton generations have been released for RDS databases: Graviton2 (2021), Graviton3 (2023), Graviton4 (2024), and Graviton4E variants in ...
Usage AI
AWS RDS management console showing the storage monitoring panel for an RDS PostgreSQL instance with pgvector enabled, with a storage breakdown visualization showing the total 200 GB gp3 volume allocated at $23 per month, with a detailed breakdown showing 38 gigabytes consumed by the vector embeddings table containing 5 million 1536-dimensional vectors stored as pgvector vector type, 67 gigabytes consumed by the HNSW index built on the embedding column with default m equals 16 and ef_construction equals 64 parameters, 42 gigabytes for other application tables and indexes, and 53 gigabytes of remaining free space, with an annotation showing the HNSW index is 1.76 times larger than the raw vector data it indexes

RDS PostgreSQL Extensions Cost: pgvector, PostGIS, and What Actually Drives Your Bill

| | aws, RDS
The AI Overview gets the headline right: pgvector and PostGIS are free extensions on Amazon RDS for PostgreSQL. No licensing fee, no per-query charge, no additional line item for enabling them. You ...
Usage AI
AWS RDS console Reserved Instances purchase page showing the Oracle BYOL offering for db.r7i.xlarge in US East North Virginia with the Multi-AZ and Single-AZ configuration displayed as flexible options under the same reservation, term selectors showing 1-year and 3-year options, payment type dropdown showing No Upfront selected with the effective hourly rate displayed, and a size flexibility note indicating the reservation applies to all sizes within the r7i family for Oracle BYOL workloads

RDS Oracle Reserved Instances: BYOL, License-Included and the Hidden Costs to Know First

| | aws, RDS, Reserved Instances
Oracle is the most expensive engine on Amazon RDS. The License Included SE2 hourly rate on a db.r6i.large is approximately $0.70/hr — nearly three times the cost of the same instance running ...
Usage AI
Oracle database parameter query output showing the SQL statement SELECT VALUE FROM V$PARAMETER WHERE NAME equals control_management_pack_access returning the value DIAGNOSTIC+TUNING, displayed in a SQL client or AWS RDS Performance Insights interface, with an annotation overlay in orange text stating This value indicates active Diagnostics Pack and Tuning Pack usage which requires Oracle Enterprise Edition plus separate pack licensing fees -- this database cannot be migrated to SE2 without disabling AWR collection and replacing the performance monitoring workflow

RDS Oracle EE vs SE2: When Standard Edition 2 Is Enough — and When It Is Not

| | aws, RDS
Oracle Enterprise Edition is the default choice for production Oracle databases in most organizations. It was the right default when on-premises licensing included EE in site licenses and ULAs at negligible marginal ...
Usage AI
AWS RDS for Oracle pricing calculator page showing the instance type db.r6i.xlarge selected with three licensing options displayed: License Included SE2 showing an hourly rate of approximately $0.952 in US East North Virginia with a red annotation showing $329.96 per month license premium component, BYOL SE2 showing $0.50 per hour with only the infrastructure cost and a green annotation showing zero license premium, and BYOL Enterprise Edition also showing $0.50 per hour with a note that Enterprise Edition features are available at no additional AWS compute charge with the Oracle license cost borne externally, illustrating the billing difference between the three options

RDS Oracle BYOL: How to Maximize Your Existing License Investment

| | aws, RDS
Oracle on AWS RDS is the most expensive engine option AWS offers. A db.r6i.large running Oracle Database Standard Edition 2 with License Included costs approximately $0.70 per hour — roughly $511 per ...
Usage AI
Technical architecture diagram showing the InnoDB write path in two configurations side by side: the left panel labeled Standard InnoDB with Doublewrite Buffer shows a data modification flowing through a two-step process where the 16 KiB page is first written sequentially to the doublewrite buffer with an fsync system call creating a safe copy, then written to its actual location in the data file with a second fsync, with annotations showing this doubles the write I/O and an fsync count of 2 per page write; the right panel labeled RDS Optimized Writes shows the same data modification flowing directly from InnoDB to the data file in a single atomic 16 KiB write backed by the AWS Nitro System torn write prevention at the hardware layer, with annotations showing 1 write per page, 1 fsync, and 50 percent I/O reduction, with the Nitro hardware guarantee replacing the software-level doublewrite buffer protection

RDS Optimized Writes: 2x MySQL and MariaDB Write Throughput, the Incompatibility Error Explained, and the IOPS Cost Angle Nobody Covers

| | aws, RDS
RDS Optimized Writes is one of the few AWS features that genuinely delivers its headline claim with no caveats on pricing: up to 2x write throughput at no additional cost. There is ...
Usage AI
Two-panel architecture diagram illustrating the RDS Optimized Reads mechanisms: the left panel labeled Temporary Table Acceleration shows a query execution flow where complex sort and aggregation operations that would normally write temporary tables to the EBS network storage are instead redirected to the local NVMe SSD attached to the d-family instance, reducing I/O latency for those operations across all supported RDS and Aurora engines; the right panel labeled Tiered Buffer Pool Caching shows a three-layer storage hierarchy with the in-memory InnoDB buffer pool at the top, a local NVMe SSD layer below it labeled second-tier cache receiving database pages evicted from memory, and the EBS volume at the bottom, with a note indicating this tiered caching architecture is available only on Aurora PostgreSQL instances using the I/O-Optimized billing configuration

RDS Optimized Reads (NVMe Cache): What It Actually Costs and When It Pays Off

| | aws, RDS
The AWS documentation is clear that Optimized Reads is included at no additional charge. What is less clear is that the phrase ‘no additional charge’ means no charge beyond the standard instance ...
Usage AI
Coverage tree diagram for a db.r8g.xlarge Single-AZ reserved instance showing 8 normalization units at the root branching into four equivalent coverage scenarios: one xlarge Single-AZ at 8 units showing 100 percent coverage, two large Single-AZ instances at 4 units each showing 100 percent total coverage, four medium Single-AZ instances at 2 units each showing 100 percent total coverage, one 2xlarge Single-AZ at 16 units showing 50 percent coverage with the remaining 50 percent at on-demand rates, and a separate cross-deployment section showing two large Single-AZ RIs at 4 plus 4 equals 8 units fully covering one large Multi-AZ instance which counts as 8 normalization units

RDS MySQL RI Size Flexibility: How Instance Normalization Saves You Money

| | aws, RDS, Reserved Instances
Most guides explain that RDS MySQL reserved instances are size-flexible. Few explain exactly what that means in practice, and almost none explain the part that actually changes how you should buy them: ...
Usage AI
Architecture diagram showing an RDS MySQL primary instance in the US East N Virginia region with two read replicas in the same region, all three covered by green RI badges labeled us-east-1 Single-AZ RI, and a fourth cross-region read replica in the EU West Ireland region covered by a separate green RI badge labeled eu-west-1 Single-AZ RI, with a data transfer arrow between the regions marked in orange labeled cross-region data transfer charges apply and not covered by RI

RDS MySQL Read Replicas: How They Affect Your RI Strategy

| | RDS
Every RDS MySQL read replica is a regular database instance. It runs, it consumes compute and storage, and it bills at the same hourly rate as any other instance of the same ...
Usage AI
Normalization unit coverage diagram for RDS reserved instance size flexibility showing a central db.r8g.xlarge reservation box labeled 8 normalization units connecting via arrows to three equivalent coverage configurations: 2x db.r8g.large each contributing 4 units, 4x db.r8g.medium each contributing 2 units, and 1x db.r8g.xlarge contributing all 8 units, alongside a separate SQL Server section showing a solid boundary with label 'no size flexibility' indicating that SQL Server and Oracle License Included require exact-size reservations

How to Save on RDS Reserved Instances: A Quick Guide

| | aws, RDS
Every RDS database running on-demand is paying a premium for flexibility that most production databases do not need. Reserved instances eliminate that premium by trading a scheduling commitment for a pricing discount ...
Usage AI
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