Oracle Database Migration
Migrate Oracle Database to Postgres
and save $500K–$2M/year in licensing
Oracle Database licensing costs $500K–$2M/year for mid-size enterprises, with 5–10% annual price increases and vendor lock-in through proprietary PL/SQL. Postgres delivers equivalent capability at a fraction of the cost.
License Savings Calculator
See how much you can save by switching to Postgres
Migration Process
Five phases to production-ready Postgres
Schema Conversion
Automated conversion of Oracle schemas, data types, sequences, and constraints to Postgres equivalents. Full mapping report with manual review items flagged.
Stored Procedure Translation
PL/SQL packages, functions, and triggers translated to PL/pgSQL. Oracle-specific constructs (CONNECT BY, MODEL clause) rewritten to Postgres-native patterns.
Data Migration
Full data migration with validation checksums. Large tables migrated in parallel. LOBs, XMLType, and spatial data handled with type-specific pipelines.
Parallel Operation
Both databases run simultaneously with bidirectional sync. Applications cut over gradually. Instant rollback available throughout the transition window.
Performance Tuning
Query plan analysis, index optimization, and connection pooling tuned for Postgres. Benchmark suite validates equivalent or better performance before Oracle decommission.
Oracle Database vs Postgres
| Oracle Database | PostgreSQL | |
|---|---|---|
| License Cost | $47,500/core (Enterprise) | $0 (open source) |
| Annual Support | 22% of license fee | Included in managed hosting or community |
| Stored Procedures | PL/SQL (proprietary) | PL/pgSQL (open, compatible) |
| High Availability | RAC + Data Guard ($$$) | Patroni / streaming replication (free) |
| JSON Support | Added in 12c, extra cost features | Native JSONB since 9.4, fully indexed |
| Vendor Lock-in | High (proprietary extensions) | None (open source, multi-cloud) |
Frequently asked questions
How long does an Oracle Database to Postgres migration take?
Typical migrations take 3-9 months depending on database size, complexity of PL/SQL stored procedures, and number of application dependencies. We run a free assessment to give you an accurate timeline.
Can PL/SQL be converted to PL/pgSQL automatically?
About 70-85% of PL/SQL translates directly to PL/pgSQL with automated tooling. The remaining procedures require manual review, primarily around Oracle-specific packages like DBMS_OUTPUT, UTL_FILE, and custom types.
What about Oracle-specific features like RAC and Data Guard?
Postgres offers equivalent high-availability solutions: Patroni or pg_auto_failover for automatic failover, and streaming replication for Data Guard equivalence. For horizontal read scaling, Citus or read replicas replace RAC workloads.
Will application performance change after migration?
Most queries perform comparably or better on Postgres. Oracle-specific optimizer hints need removal, and some execution plans change. We run parallel benchmarks during migration to catch and resolve any regressions before cutover.
Can we run Oracle and Postgres in parallel during migration?
Yes. We set up bidirectional replication during the transition period so both databases stay in sync. This allows gradual application cutover with instant rollback capability.
Ready to eliminate Oracle licensing? Let's build your migration plan.
Send us your Oracle schema overview. We'll deliver a scoped migration plan with timeline and cost estimate within 5 business days.