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d19bd29f07
Once we've completed a PREPARE, our session is not running a transaction, so its entry in pg_stat_activity should show xact_start as null, rather than leaving the value as the start time of the now-prepared transaction. I think possibly this oversight was triggered by faulty extrapolation from the adjacent comment that says PrepareTransaction should not call AtEOXact_PgStat, so tweak the wording of that comment. Noted by Andres Freund while considering bug #10123 from Maxim Boguk, although this error doesn't seem to explain that report. Back-patch to all active branches.
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.