PostgreSQL Enum Type Migration Failing in Production
PostgreSQL enum migrations failing specifically in production, despite working fine in local testing, is almost always related to ALTER TYPE ... ADD VALUE's...
Category
PostgreSQL
Fixing PostgreSQL errors, performance issues and configuration quirks.
Postgres Backup and Restore With pg_dump, Common Errors
Most pg_dump and pg_restore failures come down to a small set of recurring causes — version mismatches between the tools and the server, missing permissions on...
Postgres "Database Is Being Accessed by Other Users" on Drop
PostgreSQL refuses to drop a database that has any active connections to it, as a safety measure — the error is expected behavior, not a bug, and the fix is...
PostgreSQL JSON Column Query Returning Null Unexpectedly
When a query against a JSON or JSONB column returns null even though the data clearly contains the key you're looking for, it's almost always because of the...
PostgreSQL Sequence Out of Sync After Manual Insert
When a PostgreSQL sequence falls out of sync — typically after manually inserting a row with an explicit ID — the database's auto-increment counter doesn't...
Postgres "Relation Does Not Exist" Error Fix
The "relation does not exist" error in PostgreSQL doesn't necessarily mean the table was never created — it very often means Postgres is looking in the wrong...
How to Reset PostgreSQL Password Inside Docker Container
Resetting a PostgreSQL password inside a Docker container is a bit different from a normal installation, because you're working through docker exec rather than...
Postgres Connection Refused Inside Docker Network
A "connection refused" error between two containers on the same Docker network almost always means the PostgreSQL container isn't reachable yet, isn't...
PostgreSQL "Too Many Connections" Error Fix
The "too many connections" error in PostgreSQL means the server has hit its configured connection limit and is refusing new clients. It's rarely caused by...