HV00L
PostgreSQLERRORNotableForeign Data Wrapper ErrorHIGH confidence
fdw_unable_to_create_execution
What this means
A foreign data wrapper was unable to create an execution context or statement on the remote server, preventing the query from running.
Why it happens
- 1Remote server rejected the statement preparation request
- 2Insufficient privileges on the remote server to execute the query
- 3Remote server resource limits reached (max connections, max prepared statements)
- 4FDW internal error creating the execution environment
How to reproduce
Initiating a query against a foreign table
trigger — this will error
trigger — this will error
SELECT * FROM my_foreign_table WHERE id = 1;
expected output
ERROR: HV00L: fdw_unable_to_create_execution
Fix
Check remote server permissions and resources
WHEN Remote server rejects execution
Check remote server permissions and resources
SELECT * FROM pg_user_mappings WHERE srvname = 'myserver';
Why this works
Ensures the mapped user has SELECT privileges on the remote tables
What not to do
✕ Do not ignore this error as transient
Usually indicates a persistent permission or resource problem on the remote server
Sources
Official documentation ↗
https://www.postgresql.org/docs/current/errcodes-appendix.html
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