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Best practices to handle AWS DMS tasks during PostgreSQL upgrades
- AWS Database Migration Service (DMS) facilitates data migrations to AWS with data security and integrity for PostgreSQL databases.
- AWS DMS supports both homogeneous and heterogeneous migrations, providing robust pathways for businesses to transition to the cloud.
- It is important to plan for PostgreSQL upgrades when they are no longer supported or to introduce new improvements and maintain data compliance.
- Best practices are discussed for handling AWS DMS tasks during PostgreSQL upgrades to minor or major versions.
- Understanding the differences between major and minor version upgrades in PostgreSQL is crucial for upgrade planning.
- Downtime is expected for both minor and major version upgrades in PostgreSQL and should be scheduled during low database query times.
- During full loads and CDC tasks with AWS DMS, logical replication slots play a critical role in capturing ongoing changes.
- For source PostgreSQL upgrades, ongoing AWS DMS tasks should be stopped before minor version upgrades and resumed after completion.
- For major version upgrades, careful steps are needed to handle replication slots and manage ongoing replication tasks effectively.
- When upgrading the target PostgreSQL database, AWS DMS CDC tasks are affected differently by minor and major version upgrades.
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