Healthcare & EHR Systems
Cloud Migration & Data Modernization
Modernizing A Leading EHR Platform From Legacy to AWS Cloud
Our client’s EHR platform relied on expensive, tightly-coupled, on-premise Oracle databases that restrict application agility and technical speed. Depending on monolithic systems for processing millions of HL7 v2 messages restricted expansion during fast hospital onboarding, severely limiting the deployment of real-time clinical analytics and AI-assisted decision support.
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Challenge
Solution
The Outcome
The Challenge
A mid-to-large EHR software provider needed to expand their patient record management and billing workflows, but discovered their enterprise Oracle architecture was reaching a strict performance limit.

Data Ingestion Delays

The 50TB on-premise environment, managing millions of patient records and clinical documents, failed to process massive HL7 message queues quickly. This architectural lag meant care centers faced delayed lab results, restricting physician workflows.

Inflexible Monolithic Constraints

Maintaining complex PL/SQL stored procedures and triggers tightly coupled to the Java/.NET application created extreme overhead. High enterprise licensing fees and rigid database schemas prevented using modern population health tools, and limited real-time reporting.

The Solution
Entrans shifted the EHR provider to an Amazon Aurora and RDS environment using a secure, HIPAA-compliant framework. This completely removed the high licensing costs of their legacy Oracle setup.

Automated Schema Conversion

We used the AWS Schema Conversion Tool (SCT) to meticulously translate heavily embedded PL/SQL procedures and complex Oracle database triggers into modern, compatible database logic.

Continuous Replication Process

We deployed AWS Database Migration Service (DMS) to synchronize historical data and stream ongoing healthcare transactions, guaranteeing zero data loss during the final production cutover.

HIPAA-Compliant Security Posture

The new architecture features end-to-end encrypted storage on Amazon S3, strict access control policies, and exact audit logging, guaranteeing all Protected Health Information (PHI) meets stringent healthcare regulatory standards.

Decoupled Application Logic

We separated the monolithic application layer from the database backend, allowing developers to build independent services and quickly deploy new clinical features without relying on rigid database logic.

Modernized Analytics Foundation

The migration creates a unified data flow routing complex healthcare datasets into Amazon Redshift, allowing the system to process real-time clinical dashboards and future AI workloads.

The Outcome
The EHR platform can now smoothly onboard new hospital networks and process immense data volumes effortlessly. The migration of 50TB of structured healthcare data has drastically accelerated feature deployment and lowered total cost of ownership.

100% removal of expensive Oracle licensing and on-premise hardware costs

Zero downtime achieved during the massive historical data cutover and synchronization

60% faster development cycles for advanced population health analytics and AI tools

We have been working with Entrans for the last two years and they have played a key role in building our solution. Their expertise and professionalism were evident throughout the development cycle, and we were very pleased with the final product. They have shown enormous skill and vast domain knowledge and their IT expertise is reliable and trustworthy. We would recommend Entrans for anyone looking for quality IT services, delivered in a professional manner
Nikolay Prokopiev
Chief Executive Officer
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