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PostgreSQL HV00D Error: Causes and Solutions Complete Guide

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PostgreSQL Error HV00D: fdw_invalid_option_name — Causes, Fixes & Prevention

PostgreSQL error HV00D: fdw_invalid_option_name occurs when you specify an option name that is not recognized or supported by a particular Foreign Data Wrapper (FDW). Each FDW — whether postgres_fdw, file_fdw, or a third-party extension like mysql_fdw — defines its own strict set of valid option names, and any deviation triggers this error. It commonly surfaces during CREATE SERVER, CREATE FOREIGN TABLE, CREATE USER MAPPING, or their ALTER equivalents.

Top 3 Causes

1. Typo or Incorrect Option Name in CREATE SERVER / CREATE FOREIGN TABLE

The most frequent cause is simply using the wrong option name. For example, postgres_fdw requires host, dbname, and port — not hostname, database, or portnumber.

-- ❌ Wrong: causes HV00D
CREATE SERVER bad_server
    FOREIGN DATA WRAPPER postgres_fdw
    OPTIONS (hostname 'db.example.com', database 'mydb', portnumber '5432');
-- ERROR:  invalid option "hostname"

-- ✅ Correct
CREATE SERVER good_server
    FOREIGN DATA WRAPPER postgres_fdw
    OPTIONS (host 'db.example.com', dbname 'mydb', port '5432');
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2. Mixing Options Across Different FDW Types

Developers often copy-paste configuration from one FDW and apply it to another. Each FDW has completely different option sets, and cross-applying them will trigger HV00D.

-- ❌ Wrong: applying file_fdw-style options to postgres_fdw
CREATE FOREIGN TABLE wrong_table (id INT, name TEXT)
    SERVER pg_remote_server
    OPTIONS (filename '/data/file.csv', format 'csv');
-- ERROR: invalid option "filename"

-- ✅ Correct for postgres_fdw
CREATE FOREIGN TABLE correct_table (id INT, name TEXT)
    SERVER pg_remote_server
    OPTIONS (schema_name 'public', table_name 'employees');

-- ✅ Correct for file_fdw
CREATE FOREIGN TABLE csv_table (id INT, name TEXT)
    SERVER local_file_server
    OPTIONS (filename '/data/file.csv', format 'csv', header 'true');
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3. FDW Version Upgrade Changed or Removed Option Names

After upgrading a FDW extension, previously valid option names may have been renamed or removed. Old automation scripts or migration files running against a newer FDW version will fail unexpectedly.

-- Check installed FDW versions to identify potential incompatibilities
SELECT name, default_version, installed_version
FROM pg_available_extensions
WHERE name LIKE '%fdw%';

-- Inspect current server options that may use outdated names
SELECT fs.srvname,
       fdw.fdwname,
       fs.srvoptions
FROM pg_foreign_server fs
JOIN pg_foreign_data_wrapper fdw ON fs.srvfdw = fdw.oid;
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Quick Fix Solutions

If you need to fix an already-created server with wrong options, use ALTER SERVER to drop bad options and add correct ones:

-- Drop the invalid option and replace with the correct one
ALTER SERVER bad_server
    OPTIONS (DROP hostname, ADD host 'db.example.com',
             DROP database, ADD dbname 'mydb',
             DROP portnumber, ADD port '5432');

-- Verify the fix
SELECT srvname, srvoptions
FROM pg_foreign_server
WHERE srvname = 'bad_server';
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To inspect which options are currently applied to foreign tables:

-- Review all foreign table options in the current database
SELECT foreign_table_name,
       option_name,
       option_value
FROM information_schema.foreign_table_options
ORDER BY foreign_table_name;
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Prevention Tips

Validate options against system catalogs before deploying. Build a pre-deployment check into your CI/CD pipeline that queries pg_foreign_server and information_schema.foreign_table_options to confirm that all applied options match your expected configuration. Always test DDL scripts in a staging environment first.

-- Simple sanity check: confirm expected options are set correctly
SELECT srvname,
       'host=db.example.com' = ANY(srvoptions) AS host_ok,
       'dbname=mydb'         = ANY(srvoptions) AS dbname_ok,
       'port=5432'           = ANY(srvoptions) AS port_ok
FROM pg_foreign_server
WHERE srvname = 'good_server';
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Maintain an internal FDW options reference document. Keep a team-accessible cheat sheet documenting each FDW in use along with its supported options, sourced directly from the official PostgreSQL docs and the FDW extension's own README. Enforce a code review checklist item for any FDW-related DDL to be cross-checked against this reference before merging.

Related Errors

Error Code Name Description
HV000 fdw_error Generic FDW error; parent category of HV00D
HV00C fdw_invalid_option_index Invalid option index during FDW processing
HV00J fdw_option_name_not_found Option name lookup failure in FDW handler
HV00B fdw_invalid_handle FDW handle is invalid; often a driver install issue

📖 Want a more detailed guide?
Check out the full in-depth version (Korean) on oraerror.com — includes detailed analysis, additional SQL examples, and prevention tips.

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