Neo4j Aura Outage History

## What Happened On March 6, at 10:04 AM UTC, the Aura Console became inaccessible following a recent deployment. The deployment included changes related to user organizations and switching to an org memberships entity. This change caused the console to become inaccessible for a short period. ## How the service was affected A deployment to the Aura Console introduced an issue that caused an unexpected increase in backend requests related to access validation. This led to elevated CPU usage, which impacted the availability of the console and dependent services. We rolled back to a previous version to restore access. The rollback ensured the full restoration of access to the Aura Console, resolving the core issue within the incident window ## What are we doing now We are currently implementing a comprehensive strategy to bolster system resilience and prevent future recurrence. Our immediate actions include integrating stricter and more robust safeguards into the deployment pipeline. Crucially, we are significantly enhancing our validation processes to proactively detect and flag any potential performance impacts _before_ code is promoted to the production environment

## What Happened An issue was introduced in the Neo4j 2026.02 release where MERGE queries that referenced the same property on both the left and right sides of an `ON MATCH SET` or `ON CREATE SET` clause could potentially delete that property from the node or set it to an invalid value during query execution. This behaviour was observed specifically when the node being matched had at least one property uniqueness constraint. ## How the service was affected A change in the Neo4j 2026.02 release introduced a potential risk of writes failing or invalid data being returned for queries using MERGE together with `ON MATCH`. This issue affected instances across Aura tiers and required immediate investigation by Neo4j Engineering. The team identified the root cause and deployed a fix in version 2026.02.1. ## What are we doing now The following proactive measures have been implemented to reduce the likelihood of similar incidents: * We have strengthened test coverage for `ON CREATE` and `ON MATCH` clauses, particularly those involving more complex expressions. * We are investigating additional safeguards to improve our ability to control MergeInto/MergeUnique behaviour more flexibly, as well as potential rollback capabilities to support recovery in future incidents

## What Happened On March 1, at 12:51 PM UTC, AWS services in the ME-CENTRAL-1 & ME-SOUTH-1 Region were impacted. Connectivity and power issues affected APIs and AWS core services essential to run Neo4j Aura prompting AWS to initiate an investigation ## How the service was affected Operations \(clone, backup, resuming/pausing, resizing\) that require additional resources like EC2 Instances, EBS Volumes, and other resources were impaired in the ME-CENTRAL-1 and ME-SOUTH-1 Region. Other AWS Services also experienced error rates and latencies for some workflows. Due to the ongoing conflict in the Middle East, both affected regions have experienced physical impacts to infrastructure. A detailed summary of the AWS regional incident can be found here:[ https://health.aws.amazon.com/health/status](https://health.aws.amazon.com/health/status) ## What are we doing now We are actively working to limit the impact on the Neo4j Aura service. However, customers should expect that new deployments in the affected regions may be impaired. Additionally, existing services deployed in these regions may experience reduced availability. Customers with services in these or nearby regions who are concerned about potential operational impact are encouraged to contact Neo4j Customer Support through the usual channels Please visit AWS Status page for more info:[https://health.aws.amazon.com/health/status](https://health.aws.amazon.com/health/status)