SteinDB

The only bidirectional Oracle <-> PostgreSQL migration tool

Terminal Demo

$ stein --version
SteinDB CLI v0.1.0

$ stein scan sample.sql --output table

SteinDB -- Oracle -> PostgreSQL Migration
================================================
Scanned: 10 objects in 0.3s

Object          Type        Schema  Complexity  Status
--------------- ----------- ------- ----------- ------
employees       TABLE       hr      2           Low
emp_seq         SEQUENCE    hr      1           Low
trg_emp_bi      TRIGGER     hr      4           Medium
active_emps     VIEW        hr      3           Low
get_salary      FUNCTION    hr      5           Medium

Summary: 8 auto-convertible, 2 need AI assistance
Savings estimate: ~$180K/year in Oracle licensing

$ stein convert sample.sql --output converted/ --mode rules
Converting... ======================== 100%
Converted: 8/10 objects (rules), 2 forwarded to AI
Output: converted/

$ stein verify converted/
All 8 conversions: GREEN (confidence: 100%)

Quick Start

pip install steindb && stein scan sample.sql

That's it. No Oracle Client needed, no account required, works offline.

# Scan your Oracle schema
stein scan your-oracle-export.sql

# Convert with deterministic rules only (no AI, fully offline)
stein convert your-oracle-export.sql --output ./converted/ --rules-only

# Convert with AI assistance (BYOK -- your API keys)
export STEIN_API_KEY=sk-your-openai-key
stein convert your-oracle-export.sql --output ./converted/ --model gpt-4o

# PostgreSQL to Oracle (reverse direction)
stein convert --direction pg_to_oracle your-pg-export.sql --output ./converted/

# Verify the converted output
stein verify ./converted/

# Generate an HTML report
stein report ./converted/

Features

• Bidirectional -- Oracle to PostgreSQL AND PostgreSQL to Oracle. The only tool that does both.
• 90%+ automation -- Deterministic rules handle the majority with 100% accuracy. AI handles the remaining 10%.
• Built-in verification -- Every converted object gets a confidence score (0.0-1.0). Syntax-checked, EXPLAIN dry-run tested, structurally compared.
• Works offline -- Rules-only mode runs entirely on your machine. No cloud, no network calls, no data leaving your environment.
• BYOK (Bring Your Own Key) -- Use GPT-4o, Claude, Gemini, or local models via Ollama. Your code never touches our servers.
• 870+ golden test pairs -- Every accuracy claim is verifiable. Run stein test --golden yourself.
• Handles the hard parts -- CONNECT BY, PL/SQL packages, AUTONOMOUS_TRANSACTION, Oracle empty string = NULL, and the other "silent killers" that break migrations.

Comparison

Supported Conversions

35 rule modules covering 870+ constructs in both directions:

Internationalization

SteinDB CLI supports 18 languages: English, Japanese, Korean, Chinese (Simplified & Traditional), German, French, Portuguese (Brazil), Spanish, Hindi, Indonesian, Thai, Vietnamese, Turkish, Italian, Dutch, Polish, and Arabic.

Set your language:

export STEIN_LOCALE=ja  # Japanese
stein scan sample.sql

Pricing

The CLI tool is free and open source (BSL 1.1). Rules-only mode works offline with no account required.

Paid tiers add AI-assisted conversion, team collaboration, and managed cloud features.

Cloud Service (Coming Soon)

SteinDB Cloud is an upcoming managed platform that extends the CLI:

• Web Playground -- paste SQL and convert instantly in your browser
• AI-Assisted Conversion -- hosted LLM inference for the ~10% the rule engine forwards
• Team Collaboration -- invite team members, share conversions, manage API keys
• Cloud Migration -- direct database-to-database migration between AWS RDS, GCP Cloud SQL, Azure PostgreSQL, and on-premise instances
• Post-Migration Monitoring -- continuous PostgreSQL performance monitoring after migration
• OAuth Login -- sign in with Google or GitHub
• Dashboard -- conversion history, usage analytics, billing management

Links

• Contributing
• Security Policy
• Changelog

License

SteinDB is source-available under the Business Source License 1.1.

• You CAN: read, modify, self-host, and use in production for your own migrations.
• You CANNOT: offer SteinDB as a competing hosted service.
• After 4 years: each version converts to Apache License 2.0.

Same model as HashiCorp Terraform, Sentry, and CockroachDB.

Oracle is a registered trademark of Oracle Corporation. PostgreSQL is a registered trademark of the PostgreSQL Community Association of Canada. SteinDB is not affiliated with, endorsed by, or sponsored by Oracle Corporation or the PostgreSQL Global Development Group.