Error 25001 appears when you run a command that is disallowed inside an open transaction block.
PostgreSQL error 25001 (active_sql_transaction) happens when you execute CREATE DATABASE, VACUUM, or similar commands while a transaction is active. End the transaction with COMMIT or ROLLBACK and rerun the statement outside BEGIN/COMMIT to resolve the problem.
PostgreSQL Error 25001
PostgreSQL raises SQLSTATE 25001 (active_sql_transaction) when you run a statement that must be executed outside any explicit transaction block.
The server detects that a transaction is already open, so it blocks catalog-changing or maintenance commands like CREATE DATABASE, VACUUM, and ALTER SYSTEM to protect consistency.
PostgreSQL rejects certain statements in an active transaction because they need their own implicit commit to update system catalogs safely.
If BEGIN was issued manually or by a client driver, error 25001 fires.
Autocommit-off settings in psql, JDBC, or Python psycopg can silently wrap every statement in a transaction and trigger the error when you issue administrative commands.
Complete the current unit of work with COMMIT or ROLLBACK, then rerun the statement.
Alternatively, open a new connection that is not inside BEGIN.
In psql, use \set AUTOCOMMIT on or avoid wrapping VACUUM, CREATE DATABASE, or LISTEN/UNLISTEN inside manual BEGIN blocks.
Galaxy flags these patterns and suggests removing the surrounding transaction before execution.
Migration script fails on CREATE DATABASE: split database creation into a separate script executed with autocommit enabled.
Maintenance job errors on VACUUM: drop the outer BEGIN or call VACUUM in its own session.
Keep DDL and maintenance statements out of long-running transactions, enable autocommit for administrative tasks, and validate scripts with CI linters like Galaxy’s static checker.
Monitor logs for SQLSTATE 25001 and alert immediately so blocked commands do not silently fail.
SQLSTATE 25000 (invalid_transaction_state) appears when COMMIT or ROLLBACK is issued without a matching BEGIN.
Verify transaction flow.
SQLSTATE 25005 (inappropriate_isolation_level) arises when you set isolation after the first query. Move SET TRANSACTION to the top of the block.
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Yes. When autocommit is on, each statement runs in its own implicit transaction, so administrative commands never encounter an already active block.
The server must commit catalog changes immediately when creating or dropping a database. Running it inside an open transaction would leave the cluster in an inconsistent state if rolled back.
Run SELECT txid_current_if_assigned(); a NULL result means no transaction is active. In psql, the prompt changes from =# to -> after BEGIN.
No. It only blocks commands that PostgreSQL forbids inside a transaction. Regular SELECT, INSERT, UPDATE, and DELETE statements run normally.
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