SQL Commands / Transactions
ROLLBACK PREPARED
Read the PG 18 manualcancel a transaction that was earlier prepared for two-phase commit
Reading PG 18current·documented in 22 of 30 versions, 8.1 to 20
Syntax
ROLLBACK PREPARED transaction_id
Syntax diagrams
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Description
ROLLBACK PREPARED rolls back a transaction that is in prepared state.
Parameters
transaction_idThe transaction identifier of the transaction that is to be rolled back.
Notes
To roll back a prepared transaction, you must be either the same user that executed the transaction originally, or a superuser. But you do not have to be in the same session that executed the transaction.
This command cannot be executed inside a transaction block. The prepared transaction is rolled back immediately.
All currently available prepared transactions are listed in the pg_prepared_xacts system view.
Examples
Roll back the transaction identified by the transaction identifier foobar:
ROLLBACK PREPARED 'foobar';
Compatibility
ROLLBACK PREPARED is a PostgreSQL extension. It is intended for use by external transaction management systems, some of which are covered by standards (such as X/Open XA), but the SQL side of those systems is not standardized.
See Also
PREPARE TRANSACTION, COMMIT PREPAREDRelated entries
Definition snapshot: b7bd9cda · English manual source