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Tom Lane 96cc18eef6 Put back AcceptInvalidationMessages calls in heap_openrv(_extended). 
These calls were removed in commit 4240e429d0
as part of a general refactoring and improvement of DDL locking.  However,
there's a problem not solved by the rewrite, which is that GRANT/REVOKE
update pg_class.relacl without taking any particular lock on the target
table as such.  If another backend fails to do AcceptInvalidationMessages,
it won't notice a recently-committed change in ACLs.  Bug #7557 from Piotr
Czachur demonstrates that there's at least one code path in 9.2.0 in which
a command fails to do any AcceptInvalidationMessages calls at all, if the
current transaction already holds all the locks it will need.

Since we're hard up against the release deadline for 9.2.1, fix this by
putting back the AcceptInvalidationMessages calls in heap_openrv and
heap_openrv_extended, thereby restoring the historical behavior in this
area.  We ought to look for a more elegant and perhaps more bulletproof
solution, but there's no time for that right now.
2012-09-19 17:10:37 -04:00
config Also check for Python platform-specific include directory 2012-08-29 23:05:35 -04:00
contrib pg_upgrade: Remove check for pg_config 2012-09-18 22:04:28 -04:00
doc Provide adequate documentation of the "table_name *" notation. 2012-09-17 14:59:31 -04:00
src Put back AcceptInvalidationMessages calls in heap_openrv(_extended). 2012-09-19 17:10:37 -04:00
.gitignore Add gitignore for mingw/cygwin build outputs 2011-06-09 18:11:47 +02:00
aclocal.m4
configure Make configure probe for mbstowcs_l as well as wcstombs_l. 2012-08-31 14:17:56 -04:00
configure.in Make configure probe for mbstowcs_l as well as wcstombs_l. 2012-08-31 14:17:56 -04:00
COPYRIGHT Update copyright notices for year 2012. 2012-01-01 18:01:58 -05:00
GNUmakefile.in Make init-po and update-po recursive make targets 2012-06-29 14:01:54 +03:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Trivial typo fix. 2010-09-21 14:16:00 -04:00

README 

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.  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
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.