Oracle Legacy Intelligence

Your Oracle codebase
is undocumented.
We fix that in 5 days.

AI-assisted analysis · Banking domain expertise · Remote delivery

Banks running Oracle and Flexcube have millions of lines of undocumented PL/SQL at the core of their operations. Nobody fully understands it. Nobody can safely change it. Fossura decodes it — producing complete, validated documentation in days, not years.

15+
Years Oracle experience
10+
Banks delivered
5
Flexcube implementations
50%
EOD performance gain

The Problem

20 years of business logic — and nobody wrote it down.

The developers who built your Oracle systems have retired or moved on. The code still runs — but nobody fully knows why, or what breaks if you touch it. Three forces are now making this impossible to defer.

"We had a developer change three lines in a PL/SQL package to fix a formatting bug. It broke the overnight AML batch for six banks across two countries. Nobody knew the dependency existed."

— CTO, Multinational Banking Group

Oracle End-of-Support Deadline
Oracle 19c reaches end of Extended Support in 2027. Banks must migrate — but cannot plan a migration on a system nobody understands.
👥
Oracle Talent Exodus
63% of Oracle DBAs are expected to retire or leave the market within 8 years. Every departure takes institutional knowledge with it — permanently.
📋
DORA Compliance Pressure
The EU Digital Operational Resilience Act requires banks to demonstrate understanding and control of critical IT systems. Undocumented code is a compliance gap.
🔒
Migration Paralysis
Banks have the budget and the mandate to modernise. What stops them: nobody can answer the most basic migration question — "What does this system actually do?"

Services

Three tiers. One methodology. Full clarity.

Each engagement builds on the last. Start with a Tier 1 audit — and have a board-ready migration roadmap within weeks.

Tier 1
Audit Report
Delivered in 5–10 business days
€3,000–€8,000

A complete plain-English map of your Oracle codebase. Every package, procedure, and trigger — documented, risk-rated, and dependency-mapped.

  • Plain-English documentation of every Oracle object
  • Full dependency graph — visual and interactive
  • Risk heatmap: 23 critical, 187 medium classifications
  • Complexity scoring per module (1–10)
  • Executive summary for board or IT leadership
Tier 3
Managed Cloud Migration
3–9 month programme
€50,000–€200,000+

End-to-end migration delivery. AI-assisted code translation, expert validation at every step, and go-live support. Structured as a monthly retainer.

  • Everything in Tier 1 and Tier 2
  • AI-assisted PL/SQL → AWS / dbt / Python translation
  • Expert validation of every AI-translated object
  • Sprint-based delivery with defined milestones
  • Full regression and UAT support
  • Post-migration production support included

All engagements are remote. NDA signed before any code is shared. Secure file transfer only.

Start with a free 30-minute discovery call →

How It Works

From codebase to clarity in 5 steps.

The Tier 1 pipeline runs in under 10 business days. Here is what happens from the moment you send us your files.

1
Secure Intake
You transfer Oracle source files via encrypted channel. NDA and service agreement signed first.
2
AI Ingestion
Every object is parsed, catalogued, chunked, and prepared for analysis. A full inventory is produced automatically.
3
AI Analysis
Claude analyses each object: purpose, inputs, outputs, business logic, dependencies, risks, complexity score.
4
Expert Validation
A senior Oracle and banking domain expert reviews every output. Banking-specific logic is annotated with domain context.
5
Report Delivered
Complete documentation, dependency graph, and risk heatmap delivered. A debrief call walks you through the findings.
Case Study

3.2% documentation coverage to 100% — in 9 days.

A mid-size European retail bank (€18B AUM) had been running Oracle 12c for 14 years. 2.3 million lines of PL/SQL. Three Oracle DBAs, two nearing retirement. Documentation coverage: 3.2%.

The board had refused migration budget — not because they doubted the need, but because nobody could produce a credible estimate. They couldn't say what the system did, let alone what it would cost to migrate it.

Fossura delivered a Tier 1 audit in 9 business days. The Tier 2 assessment followed — classifying 61% of packages as auto-migratable, 28% as targeted rewrites, 11% as retirement candidates.

3.2% → 100%
Documentation coverage
9 days
vs. 18–24 months manually
€3.4M
Migration budget approved within 60 days
±15%
Migration effort accuracy

"For the first time in 14 years, I can tell the board exactly what our core system does, what the risks are, and what it will cost to modernise it. That conversation was impossible before."

— Head of Architecture, European Retail Bank (anonymised)

Client institutions include:

Prudential Financial Deutsche Bank BCR Bank of Valletta Banca Transilvania Alpha Bank

Why AI + Human

AI generates. Experts validate. That combination is the product.

AI models can now read and analyse PL/SQL at a speed no human can match. But on complex banking code, they make errors — errors that are consequential in a regulated environment. The Fossura methodology uses both.

What AI does
Reads and summarises every object in your codebase — thousands of packages processed overnight. Produces structured JSON analysis: purpose, logic, dependencies, risks, complexity score.
What the expert does
Reviews every AI output. Catches errors that AI makes consistently on banking-specific logic — AML calculations, regulatory reporting fields, GDPR handling. Annotates with domain context no model has.
What you get
Documentation that is faster than any purely manual approach and more accurate than any purely automated one. The combination is the product — and it cannot be replicated without both.

Manual vs. Fossura

Traditional
Fossura
Timeline
18–24 months
5–10 days
Coverage
Partial
100%
Consistency
Variable
Structured
Dependency map
Rarely done
Always included
Migration estimate
Guess
±15% accuracy
Goes out of date
Immediately
Updatable

"AI without domain expertise produces confident nonsense. Domain expertise without AI produces accurate output at an impossible pace. Together they are the product."

AV
Alexandru Vasiu
Founder · Senior Oracle Developer & Architect
PL/SQL Flexcube V11–V12.2 Data Warehousing AWS Migration GDPR Solutions AML Credit Risk Oracle ADF

15+ years delivering Oracle solutions across banking, financial services, retail, logistics, and blockchain. The domain expertise behind the Fossura methodology.

About Fossura

Built by someone who has lived inside these systems.

Fossura was founded because the Oracle legacy problem is real, specific, and chronically underserved. General consultancies offer high-level assessments. AI companies lack banking domain knowledge. Neither produces something a development team can actually use.

The methodology

Fossura's AI pipeline was built by Alexandru Vasiu — a Senior Oracle Developer and Architect who has worked at Deutsche Bank, Prudential Financial, BCR, Bank of Valletta, Banca Transilvania, and Alpha Bank over 15+ years. Every AI output is validated against 15 years of banking-domain pattern recognition. That validation is what separates useful documentation from a confident AI hallucination.

Selected client track record

2020–25
Prudential Financial
Oracle Data Warehouse · AWS Migration · Remote
2021–23
Deutsche Bank (via Luxoft)
Credit Risk Systems · PL/SQL · Remote
2022
Bank of Valletta (via Enrian Partners)
Rating Application · Solution Architect · Remote
2017–20
BCR — Collateral Management System
Technical Lead · GDPR Solution · Data Replication
2007–14
Volksbank · Banca Transilvania · Alpha Bank · Bancpost
Flexcube Core Banking · 5 full implementations

Get in Touch

Start with a free 30-minute discovery call.

No commitment. We review your situation, confirm whether a Fossura audit makes sense for your institution, and scope a proposal within 48 hours if it does.

1
30-minute discovery call
We discuss your Oracle environment, the primary pain point, and whether a Fossura engagement is the right fit.
2
Free sample analysis
We analyse a small portion of your codebase under NDA — you see the output quality before committing.
3
Scoped proposal in 48 hours
A fixed-price proposal covering tier, timeline, and deliverables. No ambiguity, no surprise invoices.
4
Engagement starts within 5 days
NDA and service agreement signed. Secure file transfer configured. Work begins.
Book a Discovery Call

We respond within one business day. All information is kept strictly confidential.

🔒 NDA available on request · All code reviewed under strict confidentiality