Discover
Record source PostgreSQL version and database size
PostgreSQL migration guide
Migrate PostgreSQL to Seemi Cloud with a tested cutover plan
Assess extensions, roles, data size, downtime tolerance, backup format, and application dependencies before moving to PostgreSQL 18 on Seemi Cloud.
SOURCEExisting PostgreSQL environment
>TARGETSeemi Cloud PostgreSQL 18
OUR DELIVERY APPROACH
A controlled migration, led by experienced engineers
We assess the source, prove the transfer path, coordinate cutover, and stay through stabilization.
Choose transfer method
Test pg_dump and pg_restore client-version compatibility
Build target
Deploy outside the production cutover window
Dry run
Compare row counts and critical aggregates
Cut over
Confirm final source timestamp
Stabilize
Confirm first scheduled backup
RISK CONTROL
Important risks are identified before cutover
Major-version behavior, extension availability, collations, and client drivers can affect portability.
A PostgreSQL dump can contain executable definitions. Inspect dumps from an untrusted source before restoration.
Large indexes, constraints, network transfer, and post-restore analysis can extend the window.
Database contents can restore while global roles, ownership, grants, or tablespaces remain incomplete.
VALIDATION
Prove the target is ready
- Schema objects, extensions, owners, and grants match the approved inventory
- Critical row counts and business aggregates reconcile
- Application transactions complete through TLS using production-like identities
- Sequences and identity columns generate valid next values
ROLLBACK
Keep a safe path back
- Keep the source database intact and define who can authorize rollback
- Define the deadline after which rollback requires reverse data movement
- Preserve old application configuration and DNS values
- If the target accepted writes, define how those writes will be reconciled
PRIMARY REFERENCES
Grounded in established platform guidance
COMMON QUESTIONS
What clients usually ask before migration
Should we use pg_dump or physical restore?
Logical dump and restore is portable and well understood, but can take longer for large databases. Physical, pgBackRest, or replication-based methods require compatible versions and a separately validated procedure.
Can pg_dump run while users are connected?
PostgreSQL documents that pg_dump creates a consistent export and does not block normal readers or writers, although workload impact and total migration consistency still require planning.
How do we minimize downtime?
Use a measured dry run, pre-create the target, parallelize supported restore stages, reduce DNS TTL, and consider an approved replication or final-delta method where complexity and data size justify it.
Does Seemi perform the application validation?
Seemi can support infrastructure and migration verification, but the customer remains responsible for business user-acceptance testing unless a broader engagement expressly includes it.
READY TO PLAN THE MOVE?