Migrate Oracle reference partitioned tables to Amazon RDS or Aurora PostgreSQL with AWS DMS
Database Blog
This article provides a comprehensive guide for migrating Oracle reference-partitioned tables to Amazon RDS or Aurora PostgreSQL using AWS Database Migration Service (DMS). The key challenges and solutions include:
- Oracle reference partitioning doesn't have a direct equivalent in PostgreSQL
- PostgreSQL cannot automatically align child records with parent partitions
- Solution involves creating an equivalent partitioning scheme in PostgreSQL
- Using a PostgreSQL BEFORE INSERT trigger to maintain data relationship
- Configuring AWS DMS to migrate data with specific table mapping rules
The approach ensures data migration maintains the performance benefits of partitioning while transitioning from Oracle to PostgreSQL, using a trigger mechanism to preserve data colocation and relationship between parent and child tables.
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