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Heikki Linnakangas ac3c59cc80 Fix a rare race condition when commit_siblings > 0 and a transaction commits 
at the same instant as a new backend is spawned. Since CountActiveBackends()
doesn't hold ProcArrayLock, it needs to be prepared for the case that a
pointer at the end of the proc array is still NULL even though numProcs says
it should be valid, since it doesn't hold ProcArrayLock. Backpatch to 8.1.
8.0 and earlier had this right, but it was broken in the split of PGPROC and
sinval shared memory arrays.

Per report and proposal by Marko Kreen.
2009-03-31 05:18:43 +00:00
config Detect and error out on inability to get proper linkage information required for plperl, usually due to absence of perl ExtUtils::Embed module. Backpatch as far as 8.1. 2008-11-12 00:00:53 +00:00
contrib Fix old thinko in pgp.h: the idea is to declare some named enum types, 2009-03-25 15:03:25 +00:00
doc tag 8.2.13 2009-03-13 02:16:43 +00:00
src Fix a rare race condition when commit_siblings > 0 and a transaction commits 2009-03-31 05:18:43 +00:00
aclocal.m4
configure tag 8.2.13 2009-03-13 02:16:43 +00:00
configure.in tag 8.2.13 2009-03-13 02:16:43 +00:00
COPYRIGHT
GNUmakefile.in Add installcheck-parallel target to top level makefiles. 2006-08-18 19:58:05 +00:00
Makefile Add installcheck-parallel target to top level makefiles. 2006-08-18 19:58:05 +00:00
README Fix spectacular misspellings of procedural language names 2006-07-24 16:55:59 +00:00
README.CVS

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 including some of the more
common listed below:

C++ - http://thaiopensource.org/development/libpqxx/
JDBC - http://jdbc.postgresql.org
ODBC - http://odbc.postgresql.org
Perl - http://search.cpan.org/~dbdpg/
PHP - http://www.php.net
Python - http://www.initd.org/
Ruby - http://ruby.scripting.ca/postgres/

Other language binding are available from a variety of contributing
parties.

PostgreSQL also has a great number of procedural languages available,
a short but not complete list is below:

PL/pgSQL - included in PostgreSQL source distribution
PL/Perl - included in PostgreSQL source distribution
PL/PHP - http://projects.commandprompt.com/projects/public/plphp
PL/Python - included in PostgreSQL source distribution
PL/Java - http://gborg.postgresql.org/project/pljava/projdisplay.php
PL/Tcl - included in PostgreSQL source distribution

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/.