Legacy system assessment
Inventory of forms, reports, libraries, procedures and dependencies, with the complexity of each module and the recommended modernization path.
Legacy system modernization
Oracle Forms, PowerBuilder and Windows Forms modernization
We bring your desktop and client-server systems to the web and the cloud while keeping what matters most: the business rules, the data and the years of investment you have already put into them.
Many companies still run critical processes —accounting, payroll, logistics, invoicing— on systems built with Oracle Forms and Reports, PowerBuilder or Windows Forms. They work, but every year it gets harder to find specialists, install them on new machines, integrate them with tax authorities, banks or mobile apps, and keep them secure.
Rewriting everything from scratch is expensive and risky: years of business logic live in the code, in PL/SQL procedures and in the heads of a few people. That's why we modernize in stages: we inventory and document that logic, reuse it —in the database or exposed as APIs— and migrate the screens to a modern web interface, module by module, without stopping operations.
What the service includes
Oracle Forms & Reports
Upgrade to supported versions or migration to the web with Oracle APEX, Java or Angular, reusing existing PL/SQL packages and procedures.
PowerBuilder
Upgrade to current Appeon PowerBuilder versions or migration to web applications and APIs in .NET or Java, preserving DataWindows and business logic.
Windows Forms
Migration from .NET Framework to modern .NET and evolution to the web, separating logic from the UI so it can be reused in APIs.
Business logic as APIs
We wrap existing rules in REST services so the old and new systems can coexist and integrate with other applications.
Reports & data
Migration of reports to modern tools and data validation through side-by-side tests between the old and new systems.
Benefits for your business
Your investment is preserved
We reuse the business logic, procedures and data that already work.
No downtime
Module-by-module migration, with both systems running side by side until the transition is complete.
Lower risk
Side-by-side tests that verify the new system calculates the same results as the old one.
Ready to grow
Web access, cloud, APIs and integration with new tools, including artificial intelligence.
Technologies we use
- Oracle Forms
- Oracle Reports
- PowerBuilder
- Windows Forms
- .NET
- Oracle APEX
How we work
- 01
Diagnosis
We analyze your architecture, processes and business goals to identify risks and opportunities.
- 02
Solution design
We design an architecture and technical roadmap aligned with your goals and budget.
- 03
Development & implementation
We build the solution with engineering best practices and constant communication.
- 04
Testing & deployment
We validate quality, performance and security before a controlled production rollout.
- 05
Support & continuous improvement
We support operations with monitoring and evolutionary improvements to the solution.
Related case studies
SUNAT and RENIEC integration with legacy ERP
Challenge: A legacy ERP had to meet SUNAT electronic obligations (SIRE, CPE and GRE) and validate identities with RENIEC, without rewriting the existing system.
Solution: Integration layer connecting the ERP with SUNAT services for electronic registers (SIRE), electronic payment vouchers (CPE) and electronic remittance guides (GRE), plus RENIEC queries for identity verification.
- Java
- SOAP/REST
- XML
- SIRE
- CPE
- GRE
- RENIEC
Web server migration, maintenance and tuning
Challenge: Critical applications on WebLogic, JBoss, Apache HTTP Server and Apache Tomcat faced version migration risk, downtime from insufficient maintenance and production performance degradation.
Solution: Controlled migration across versions and environments, preventive and corrective middleware maintenance, and JVM, pool, connector and Apache/Tomcat/WebLogic/JBoss configuration tuning to stabilize and optimize operations.
- WebLogic
- JBoss
- Apache HTTP Server
- Apache Tomcat
Frequently asked questions
Is business logic lost when modernizing a legacy system?
No. The first step is to inventory and document the business rules. Much of it usually lives in database procedures and packages that are reused as is; logic in the screens is moved to services or APIs and validated with side-by-side tests against the current system.
Do we have to rewrite the whole system from scratch?
Not necessarily. Depending on the system's condition, we recommend upgrading to a supported version, migrating it to the web module by module, or wrapping it with APIs. A full rewrite only makes sense when the code no longer adds value.
What are the options for modernizing Oracle Forms and Reports?
The main ones are upgrading to a supported Oracle Forms version, migrating the screens to Oracle APEX while reusing the existing PL/SQL, or building a web application in Java or Angular on the same database. We choose based on your budget, your team and your future plans.
Can PowerBuilder or Windows Forms be migrated to the web?
Yes. PowerBuilder applications can be upgraded to current Appeon versions and taken to the web, or migrated to .NET or Java. For Windows Forms, we first migrate from .NET Framework to modern .NET and then separate the logic into APIs to build a web interface.
How long does a modernization take?
It depends on the number of forms, reports and modules. The assessment takes a few weeks and the migration is planned in stages, delivering the highest-value modules first so the business sees results from the start.
Shall we talk about your project?
Tell us what you need and we'll propose a solution with clear scope, timeline and budget.