Informix to Oracle Migration for a Leading US Bank
At a glance -
the essentials
Leading US Regional Bank
- The bank's core lending application ran on an aging Informix database with limited vendor support, growing license risk, and performance ceilings that were beginning to constrain product launches. Decades of Informix-specific stored procedures, ESQL/C code, and proprietary data types meant a naive migration would break dozens of integrated systems.
- Kumaran built an automated schema and PL/SQL conversion toolkit calibrated to the bank's coding patterns, achieving high-fidelity translation of stored procedures, triggers, and packages.
- Application code was systematically refactored to Oracle JDBC, with a regression suite generated from production traces to validate behavior end-to-end.
- Oracle GoldenGate provided real-time replication during a parallel-run period, enabling a sub-two-hour final cutover with full rollback capability.
- 100% of the schema and stored logic was successfully converted with zero data loss across the cutover window.
- Average query response improved by 40% on the new Oracle 19c platform, with headroom to support the next decade of growth.
- License and support risk was eliminated, and the bank's database team gained a modern foundation for analytics and AI initiatives.
From aging Informix to a high-performance Oracle 19c platform.
A leading US regional bank partnered with Kumaran to migrate its core lending application from an aging Informix database to Oracle 19c. The engagement delivered automated schema and PL/SQL conversion, full application refactoring to Oracle JDBC, and a parallel-run migration using Oracle GoldenGate - achieving zero data loss and a sub-two-hour cutover window.
The Background
The bank's core lending application had been running on Informix for years, accumulating stored procedures, ESQL/C code, and proprietary data types that were tightly coupled to the Informix engine. With vendor support shrinking and license costs rising, the bank needed a path to a modern, supportable database platform - without disrupting the dozens of integrated systems that depended on the existing schema.
Want to know how we achieved these results?
Contact us today to learn more about our database migration approach and the success story behind this engagement with a Leading US Regional Bank.
