Informix to Oracle Migration for a Leading US Bank
Leading US Regional BankFinancial ServicesUnited States12 months
Zero
Data loss
40%
Performance gain
100%
Schema converted
<2 hrs
Cutover window
Case study highlightsAt a glance —
At a glance —
the essentials.
The Customer
Leading US Regional Bank
Industry: Financial ServicesRegion: United StatesDuration: 12 months
Database MigrationApplication RefactoringPerformance Tuning
Business Challenge
- 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.
Our Solution
- 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.
Key Results
- 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.
The story so farGo deeper —
Go deeper —
download the PDF.
The downloadable report includes the complete technical narrative beyond the highlights above:
The full story
Want to know how we achieved these results?
Contact us today to learn more about our approach and the success story behind this engagement with Leading US Regional Bank.
Result delivered
Zero
Data loss
Delivered for Leading US Regional Bank
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