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it takes could be held for quite awhile after the analyze step completes. Rethink locking of pg_statistic in light of this fact. The original scheme took an exclusive lock on pg_statistic, which was okay when the lock could be expected to be released shortly, but that doesn't hold anymore. Back off to a normal writer's lock (RowExclusiveLock). This allows concurrent ANALYZE of nonoverlapping sets of tables, at the price that concurrent ANALYZEs of the same table may fail with 'tuple concurrently updated'. |
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doc | ||
src | ||
aclocal.m4 | ||
configure | ||
configure.in | ||
COPYRIGHT | ||
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HISTORY | ||
INSTALL | ||
Makefile | ||
README | ||
register.txt |
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 several language bindings, including C, C++, Perl, Python, and Tcl, as well as drivers for JDBC and ODBC. 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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 ftp://ftp.postgresql.org/pub/. For more information look at our web site located at http://www.postgresql.org/.