ETL-to-ELT Modernization: Automating Informatica-to-ODI Migration with Metadata-Driven Conversion
Built a metadata-driven application that converts Informatica PowerCenter mappings into governed Oracle Data Integrator assets and Snowflake-ready ELT execution logic, preserving lineage and reducing manual recreation risk.
Company
Enterprise Client
Domain
Data Platform Modernization
Service
Data Engineering & Migration
Technology Stack
Problem Statement
Manual Recreation of Informatica Mappings Slows Migration Delivery
Migrating from Informatica PowerCenter to Oracle Data Integrator required manually recreating complex mappings — a slow, error-prone process that risked losing critical business logic and data lineage.
Key challenges included:
- Manual recreation of Informatica mappings slows migration delivery and introduces human error.
- Complex expressions, mapplets, lookups, joins, and field dependencies must retain their original intent during conversion.
- ODI project, model, and connection context varies by environment, requiring flexible configuration.
- Teams need clear conversion status, mapping preview, and full audit history for governance.
The solution included:
- Parsed PowerMart XML exports into a normalized metadata model, preserving fields, expressions, dependencies, joins, filters, lookups, and sort keys.
- Reconstructed full data lineage and expanded mapplets to maintain end-to-end traceability across conversion.
- Generated Snowflake-compatible SQL and Python scripts for ELT execution, retaining variable data types, default values, precision, and scale.
- Provided instance-to-model configuration, mapping preview, and real-time progress visibility for conversion teams.
- Maintained full conversion history and lifecycle status for auditable, governed delivery.
- Converted PowerCenter metadata into the configured ODI project and folder structure automatically.
Solution
Metadata-Driven Automated Conversion from PowerCenter to ODI & Snowflake
Peramal Services built a metadata-driven application that parses PowerMart XML into a normalized metadata model, reconstructs lineage, expands mapplets, and generates ODI mappings with Snowflake-compatible SQL and Python artifacts.
Impact & Benefits
Key Benefits Delivered
- Eliminated manual mapping recreation — automated conversion from PowerCenter XML to ODI assets.
- Preserved all business logic including expressions, mapplets, lookups, joins, filters, and sort keys.
- Generated Snowflake-ready SQL and Python scripts, accelerating ELT execution readiness.
- Retained variable data types, default values, precision, and scale for data integrity.
- Provided real-time conversion preview and progress visibility for migration teams.
- Maintained complete conversion history and lifecycle status for auditable, governed delivery.
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