Oracle Data, AI & Industry Accelerators · Automated AST & AI Reverse-Engineering Blueprints Brief: VNA-SB-024 · Redwood Flavor: Sage Canyon Designed by Viscosity.AI
Reverse-Engineer Legacy PL/SQL, Forms & PowerBuilder (AST) VNA-SB-024 · Stack Modernization Architecture
Search Intent: Extract Business Rules from Undocumented Legacy Code ยท AST + AI

Reverse-Engineer Undocumented PL/SQL, PowerBuilder & Forms Code into Exact Specs.

The #1 reason legacy modernization projects fail is that nobody alive knows what the existing 20-year-old application actually does. Before you write a single line of replacement code, our Legacy Code X-Ray engine combines deterministic Abstract Syntax Tree (AST) parsers with domain-tuned LLMs to generate a 100% cited functional specification, entity-relationship lineage map, and dead-code inventory in 2 weeks.

Discovery Timeline
2-3 Weeks (vs. 6 Months)
Dead Code Identified
30-45% Avg Eliminated
Rule Traceability
100% Line-Number Cited
Supported Source Languages
PB / Forms / PLSQL / T-SQL
Request the PDF Solution Brief (VNA-SB-024) → Download Modifiable RFP Template & Q/A
Specific Engineering Search Queries Covered in This Brief:
  • reverse engineer undocumented PL/SQL packages to requirements
  • extract business rules from legacy PowerBuilder and Oracle Forms
  • automated dead code analysis Oracle database PL/Scope
  • convert legacy stored procedures to functional specification BRD
  • AST call graph and data lineage for legacy modernization
Reverse-Engineer Legacy PL/SQL, Forms & PowerBuilder (AST) · Problem Space & Technical Solution

Reverse-Engineer Undocumented PL/SQL, PowerBuilder & Oracle Forms Codebases into Specs

Every conversion and modernization program requires separating legacy presentation artifacts from data-tier business rules so your modernized platform runs faster, costs less to license, and stays upgrade-safe.

The Legacy Bottleneck (Problem Space)

  • Traditional discovery relies on interviewing business users who only know the screens they click daily and miss 40% of the silent validation, pricing, and compliance rules buried in triggers and stored procedures.
  • Conversely, dumping raw 10,000-line PL/SQL packages or PowerBuilder `.srw` files into generic AI chat windows fails due to context-window truncation, missing cross-file call graphs, and hallucinated summaries.
  • Without a dead-code audit, engineering teams waste 35%+ of their modernization budget converting obsolete screens, unused tables, and orphaned procedures that have not executed in years.

The Engineered Target Architecture

  • Stage 1 - Deterministic Compiler AST & Call-Graph Construction: We parse your complete source repository (`.pbl`/`.srw`/`.srd`, `.fmb`/`.pll`/`.rdf`, `DBA_SOURCE` PL/SQL, T-SQL, Pro*C, ColdFusion, C#) into a deterministic graph database mapping every UI control -> event trigger -> procedure call -> table/column CRUD operation.
  • Stage 2 - Runtime Telemetry & Dead-Code Pruning: By correlating the static AST call graph with database audit/AWR execution counts (`V$SQL` / `DBA_HIST_SQLSTAT` / table modification timestamps), we isolate the 30% to 45% of legacy objects that are completely dead.
  • Stage 3 - AST-Grounded AI Specification Synthesis: Each topologically sorted call subgraph is fed into our private OCI/Anthropic/OpenAI inference pipeline to produce human-readable Functional Requirements Documents (BRDs), state machines, and edge-case tables where every bullet cites the exact legacy file and line range.
  • Stage 4 - Automated Target Scaffolding & Test Generation: From the verified AST and specification, we generate target Oracle APEX 24.2 blueprints, PL/SQL package stubs, OpenAPI 3.1 contracts, and `utPLSQL` / Playwright regression test suites.
  • Query Fan-Out Rationalization & Runtime/Inference Filtering: Instead of migrating cloned reports and DataWindows 1-for-1, our AST SQL parser clusters queries by their canonical core JOIN graph, builds governed Oracle 23ai views only for those core queries, and generates dynamic WHERE clauses, faceted filters, and ad-hoc report variations at runtime and via AI inference (APEX 24.2 Smart Filters & Select AI).
Anonymized Production Proof · Verified Architecture Outcome

Used as the Phase 0 foundation across our PowerBuilder, Oracle Forms, Sybase, and ERP modernization engagements, Legacy Code X-Ray cuts discovery time from 6 months of manual interviews to 2 weeks of deterministic analysis while eliminating up to 45% of dead legacy code before build begins.

Interactive Architecture Sizer & TCO Estimator · VNA-SB-024

Legacy PL/SQL, Forms & PowerBuilder AST Code X-Ray & Query Fan-Out Sizer

Adjust the sliders below to model your current source environment (including query fan-out rationalization where core SQL queries are built once and WHERE clauses/filters execute at runtime or via AI inference) and preview target sizing, timeline, and annual savings.

450 K LOC
600 objects
80 % fan-out reduction
Canonical Core SQL Views (After Fan-Out Collapse)
Calculating...
Senior Architect Discovery Hours Saved
Calculating...
Automated AST & Spec Generation Turnaround
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Discovery & De-Duplication Cost Savings
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Benchmarks derived from anonymized production conversions by Viscosity.AI
Component & Workload Mapping

Reverse-Engineer Legacy PL/SQL, Forms & PowerBuilder (AST) - Component Conversion Matrix

Search and inspect how each legacy component, database object, or cloud workload maps to the target architecture.

Reverse-Engineer Undocumented PL/SQL, PowerBuilder & Oracle Forms Codebases into Specs - Component Mapping & Engineering Method (VNA-SB-024)
Legacy Artifact / Baseline Workload Modernized Target Architecture Engineering Method & Outcome
Undocumented 5,000-Line PL/SQL or T-SQL Packages Line-Cited Functional Specification + Modular Package Design AST Control-Flow Graph + LLM Summarization
Spaghetti UI Triggers (PowerBuilder / Oracle Forms) Extracted Business-Rule Catalog + State Transition Matrix UI-vs-Domain Logic Separation Classifier
Orphaned Tables, Views & Uncalled Procedures Verified Dead-Code Decommission Manifest Static Call-Graph + `DBA_HIST_SQLSTAT` Join
Implicit Foreign Keys (Enforced Only in App Code) Explicit DDL Constraints & Interactive ERD Lineage Diagram AST Join-Predicate Mining
Cloned Reports / Queries Differing Only by WHERE Clause or Group-By (Query Fan-Out) Canonical Core SQL View + APEX 24.2 Runtime / AI Inference Filters AST Join-Graph Clustering (75-90% Report Count Reduction)
Core Platform & Ancillary Tooling

Oracle APEX, Database 23ai & Cloud Engineering Stack

We stay strictly in our high-leverage engineering lanes, combining Oracle APEX 24.2, ORDS, Viscosity AMP, SQLcl Liquibase, GoldenGate, Engineered Systems, and cloud-native automation.

Viscosity Multi-Language AST Parser (PowerBuilder, Oracle Forms XML, PL/SQL, T-SQL, ColdFusion, .NET)
Oracle Database 23ai AI Vector Search & Graph for querying codebase dependencies
Oracle SQLcl & `DBMS_METADATA` / `PL/Scope` (`DBA_IDENTIFIERS`, `DBA_STATEMENTS`)
utPLSQL & Playwright automated parity test generators
Stakeholder & Buyer Persona Alignment · Cluster B: Legacy App Stack + Query Fan-Out to APEX

How Practitioner Champions, Technical Validators & Economic Buyers Use This Blueprint

1. Practitioner Champion (Pain-Holder)

Principal Enterprise Architect, Legacy Modernization Program Lead, Database & Application Discovery Lead

Parse undocumented PL/SQL, PowerBuilder, Forms, and T-SQL into deterministic AST call graphs, dead-code manifests, and rationalized core SQL views in 2 weeks.

Model Footprint in Interactive Sizer →
2. Technical Validator & Architect

VP of Application Development, CTO / Chief Architect, VP of PMO & Digital Transformation

100% line-number-cited Functional Requirements Documents (BRDs) grounded in compiler ASTs and `DBA_HIST_SQLSTAT` runtime telemetry - zero AI hallucination.

Inspect Component Conversion Matrix →
3. Economic & License-Exit Buyer

CIO / CFO, VP of Enterprise Engineering

Cut Phase 0 discovery from 6 months of interviews to 2 weeks and eliminate 30-45% of dead legacy code before writing a single line of target code.

Download Modifiable RFP & PDF Brief →
Procurement & Architecture Kit · Writing an RFP for Reverse-Engineer Legacy PL/SQL, Forms & PowerBuilder (AST)?

Download the Modifiable RFP Template & Vendor Q/A Rubric

If your team is preparing a Request for Proposals (RFP) for Reverse-Engineer Undocumented PL/SQL, PowerBuilder & Oracle Forms Codebases into Specs, download our ready-to-customize RFP template below. It includes modifiable baseline inventory tables, mandatory technical scope requirements, fixed-fee milestone pricing schedules, and a scored Vendor Q&A questionnaire with evaluation benchmark keys.

What Is Inside the Modifiable RFP Template

  • Section 1 & 2 - Modifiable Organization Schedule & Baseline Inventory: Plug-in tables for your exact Undocumented Legacy Codebases (PL/SQL, PowerBuilder, Forms, Pro*C, T-SQL, RPG/COBOL) object counts, database volume, SLAs, and procurement dates.
  • Section 3 - Mandatory Technical Scope & Conversion Matrix: Artifact-by-artifact acceptance criteria mapping Undocumented Legacy Codebases (PL/SQL, PowerBuilder, Forms, Pro*C, T-SQL, RPG/COBOL) to AST Dependency Graphs, Business-Rule Catalogs, OpenAPI Specs & Target Code (including AST discovery and query fan-out rationalization).
  • Section 4 - Scored Vendor Q&A Questionnaire & Benchmark Key: Domain-specific technical and licensing questions with a 10-point evaluation rubric so your committee can separate true automation from manual rewrite shops.
  • Section 5 & 6 - Fixed-Fee Milestone Pricing & Evaluation Scorecard: Standardized 4-phase pricing matrix (Phase 0 AST Discovery through Phase 3 Zero-Downtime Cutover).

Unlock & Email Your RFP Template Kit (Microsoft Word .DOCX + PDF)

Complete the quick request form below to immediately unlock the editable Microsoft Word (.docx) RFP template (formatted with native Word tables, bracketed fill-in fields, and vendor response boxes) and the executive PDF edition, plus receive the full kit by email.

Editable Word Edition: reverse-engineer-legacy-code-ast-rfp-template.docx (Native Microsoft Word / Google Docs)
Executive PDF Edition: VNA-SB-024-RFP-Template.pdf
Includes: Editable Scope Tables + Scored Vendor Q&A + Milestone Pricing
Principal Architect Q&A

Frequently Asked Technical & Licensing Questions

Direct answers to the architectural, licensing, and cutover questions raised by CIOs, VPs of Engineering, and Enterprise DBAs.

How is Legacy Code X-Ray different from simply using GitHub Copilot or ChatGPT on our source files?

LLMs alone cannot resolve cross-file inheritance, global variables, dynamic SQL, or database trigger chains across 2,000 files. We use real compiler parsers (including Oracle `PL/Scope` and our PBL/FMB AST engines) to build the exact mathematical dependency graph first, so the AI never guesses or hallucinates relationships.

Does our source code ever train public AI models?

Never. All AST parsing runs locally inside isolated enclaves, and any semantic summarization uses zero-data-retention enterprise API endpoints.

What is included in the downloadable PDF Solution Brief?

The PDF Solution Brief includes a sample Legacy Code X-Ray Diagnostic Output (showing an AST dependency map, extracted business-rule table with line citations, and dead-code scorecard) plus instructions for requesting a 2-week Phase 0 Codebase Assessment.

Instant Download & Email Copy · VNA-SB-024

Get the Solution Brief PDF & Editable Word RFP (.DOCX)

Enter your name and work email to immediately download the Technical Solution Brief: De-Risking Legacy Modernization with Deterministic AST Parsing and AI Business-Rule Extraction PDF and our Editable Microsoft Word RFP Template & Vendor Q/A Guide (.docx + .pdf), and get a copy sent to your inbox.

Included in Your Instant Download

1. VNA-SB-024 Solution Brief (PDF): Reference architecture, conversion matrix & licensing math.
2. Editable Word RFP Template (.DOCX & .PDF): Ready-to-edit Word tables & scored vendor Q/A.

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