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The previous coding assumed that we could just let buffers for the database's old tablespace age out of the buffer arena naturally. The folly of that is exposed by bug #11867 from Marc Munro: the user could later move the database back to its original tablespace, after which any still-surviving buffers would match lookups again and appear to contain valid data. But they'd be missing any changes applied while the database was in the new tablespace. This has been broken since ALTER SET TABLESPACE was introduced, so back-patch to all supported branches. |
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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/.