page:migrate:supabase database:multi tenant relational data

Migrate Supabase Database: Multi-Tenant Relational Data

Move PostgreSQL data from Supabase database to Ample, one component at a time. Destination verified on Ample: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=ok). Source procedure: Take a logical backup with pg_dump -Fc using the direct (non-pooled) connection string. Not migrated automatically: Supabase Auth, Storage, Realtime, Edge Functions and row-level security policies tied to Supabase roles are not migrated by a database move.

Cutover

Freeze writes at the source with the user's go-ahead, take the final dump, restore, validate counts and checksums, redeploy the app with the managed DATABASE_URL, keep the Supabase project until confirmed.

Rollback

Keep the source untouched until you confirm; nothing at the source is changed or deleted by this guide.

Representative Queries

Resource Requirements

Infrastructure Requirements

Prerequisites

Workflow Steps

  1. Inventory the source: List what Supabase database provides beyond the component you are moving. Out of scope here: Supabase Auth, Storage, Realtime, Edge Functions and row-level security policies tied to Supabase roles are not migrated by a database move.
  2. Source step 1: Take a logical backup with pg_dump -Fc using the direct (non-pooled) connection string.
  3. Source step 2: Check extensions and Supabase-managed schemas (auth, storage, realtime) in the dump; only your application schema moves.
  4. Source step 3: Restore into a scratch managed database first and compare row counts.
  5. Provision and restore: Deploy the app once so a managed PostgreSQL 16 database exists (or create one with ample database create --engine postgres), then restore the dump with pg_restore using its connection string; keep migrations idempotent.
  6. Validate before cutover: Run the app's own checks and, for data, compare counts and checksums; the example checks are the pattern self-tests (/p/multi-tenant-relational-data).
  7. Cut over: Freeze writes at the source with the user's go-ahead, take the final dump, restore, validate counts and checksums, redeploy the app with the managed DATABASE_URL, keep the Supabase project until confirmed.
  8. Rollback: Point DNS or configuration back to the source. The source was never modified; deletion is a separate, user-executed step after validation.

Limitations

Cost Estimate

Success Checks

Evidence Summary

Destination side verified: the Express pattern fixture deployed on Ample and its checks passed.

Next Actions