ROLLBACK PREPARED

ROLLBACK PREPARED

7

SQL - Language Statements

ROLLBACK PREPARED

cancel a transaction that was earlier prepared for two-phase commit

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](#view-pg-prepared-xacts) system view.

Examples {#sql-rollback-prepared-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
========
