The fdw_schema_not_found error (SQLSTATE HV00Q) means PostgreSQL cannot locate the referenced schema on the foreign server.
fdw_schema_not_found appears when PostgreSQL cannot locate the specified schema on the foreign server. Verify the schema exists, map it correctly in IMPORT FOREIGN SCHEMA or OPTIONS clauses, and refresh your foreign table definitions to resolve the problem.
fdw_schema_not_found
PostgreSQL raises fdw_schema_not_found when a foreign table, view, or IMPORT FOREIGN SCHEMA statement references a schema that the foreign data wrapper cannot find on the remote database.
The error stops query execution because PostgreSQL needs the schema to map remote objects.
Fixing it quickly restores cross-database access.
The foreign server definition may omit the search_path or OPTIONS required to expose the target schema.
The remote database might not contain the schema name spelled in the local statement, often due to typos or case sensitivity.
Privileges can block the FDW user from seeing the schema even when it exists, triggering the same message.
First confirm the schema exists on the remote server and is visible to the FDW user.
Then update the foreign server OPTIONS or the IMPORT FOREIGN SCHEMA statement to reference the exact name.
Refreshing or recreating foreign tables after correcting the definition immediately clears the error.
Running IMPORT FOREIGN SCHEMA against Postgres 15 but the remote added a new schema since the last import often causes this error. Re-run IMPORT FOREIGN SCHEMA with LIMIT TO or EXCEPT clauses to sync.
In Postgres to Snowflake FDWs, mismatched case ("Sales" vs "sales") is frequent.
Quote the identifier exactly as stored on Snowflake to fix it.
Create a test foreign server connection in Galaxy or psql that lists available schemas before writing production IMPORT FOREIGN SCHEMA scripts.
Automate nightly refreshes of foreign tables so new or renamed schemas are detected early and corrected before breaking queries.
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No. Any FDW that supports IMPORT FOREIGN SCHEMA can raise fdw_schema_not_found if the remote side hides or lacks the schema.
No. Foreign servers and tables are metadata objects. Dropping and recreating them never touches remote data.
Galaxy autocompletes remote schema names after the connection is set, reducing typos and surfacing privilege issues before execution.
PostgreSQL currently stops execution. You must correct the schema name or remove references to proceed.
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