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ROLLBACK PREPARED
Name
ROLLBACK PREPARED -- cancel a transaction
that was earlier prepared for two-phase commit
Synopsis
ROLLBACK PREPARED transaction_id
Description
ROLLBACK PREPARED rolls back a
transaction that is in prepared state.
Parameters
- transaction_id
-
The 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.