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level" locks. A session lock is not released at transaction commit (but it is released on transaction abort, to ensure recovery after an elog(ERROR)). In VACUUM, use a session lock to protect the master table while vacuuming a TOAST table, so that the TOAST table can be done in an independent transaction. I also took this opportunity to do some cleanup and renaming in the lock code. The previously noted bug in ProcLockWakeup, that it couldn't wake up any waiters beyond the first non-wakeable waiter, is now fixed. Also found a previously unknown bug of the same kind (failure to scan all members of a lock queue in some cases) in DeadLockCheck. This might have led to failure to detect a deadlock condition, resulting in indefinite waits, but it's difficult to characterize the conditions required to trigger a failure.
The PostgreSQL contrib tree ~~~~~~~~~~~~~~~~~~~~~~~~~~~ This subtree contains tools, modules, and examples that are not maintained as part of the core PostgreSQL system, mainly because they only address a limited audience or are too inelegant to be sold as an official feature. That, however, does not preclude their usefulness. Each subdirectory contains a README file with information about the module. Most items can be built with `gmake all' and installed with `gmake install' in the usual fashion, after you have run the `configure' script in the top-level directory. Some directories supply new user-defined functions, operators, or types. After you have installed the files you need to register the new entities in the database system by running the commands in the supplied .sql file. For example, $ psql -d dbname -f module.sql See the PostgreSQL documentation for more information about this procedure. Index: ------ array - Array iterator functions by Massimo Dal Zotto <dz@cs.unitn.it> cube - Multidimensional-cube datatype (GiST indexing example) by Gene Selkov, Jr. <selkovjr@mcs.anl.gov> earthdistance - Operator for computing earth distance for two points by Hal Snyder <hal@vailsys.com> findoidjoins - Finds the joins used by oid columns by examining the actual values in the oid columns and row oids. by Bruce Momjian <pgman@candle.pha.pa.us> fulltextindex - Full text indexing using triggers by Maarten Boekhold <maartenb@dutepp0.et.tudelft.nl> isbn_issn - PostgreSQL type extensions for ISBN (books) and ISSN (serials) by Garrett A. Wollman <wollman@khavrinen.lcs.mit.edu> linux - Scripts for starting and stopping the PostgreSQL server on a Linux system by Thomas Lockhart <lockhart@alumni.caltech.edu> lo - Large Object maintenance by Peter Mount <peter@retep.org.uk> mSQL-interface - mSQL API translation library by Aldrin Leal <aldrin@americasnet.com> mac - Support functions for MAC address types by Lawrence E. Rosenman <ler@lerctr.org> miscutil - PostgreSQL assert checking and various utility functions by Massimo Dal Zotto <dz@cs.unitn.it> noupdate - trigger to prevent updates on single columns pg_dumplo - Dump large objects by Karel Zak <zakkr@zf.jcu.cz> pgbench - TPC-B like benchmarking tool by Tatsuo Ishii <t-ishii@sra.co.jp> pgcrypto - Cryptographic hash functions by Marko Kreen <marko@l-t.ee> seg - Confidence-interval datatype (GiST indexing example) by Gene Selkov, Jr. <selkovjr@mcs.anl.gov> soundex - Soundex function spi - Various trigger functions, examples for using SPI. string - C-like input/output conversion routines for strings by Massimo Dal Zotto <dz@cs.unitn.it> tips/apache_logging - Getting Apache to log to PostgreSQL by Terry Mackintosh <terry@terrym.com> tools - Assorted developer tools by Massimo Dal Zotto <dz@cs.unitn.it> unixdate - Conversions from integer to datetime by Thomas Lockhart <lockhart@alumni.caltech.edu> userlock - User locks by Massimo Dal Zotto <dz@cs.unitn.it> vacuumlo - Remove orphaned large objects by Peter T Mount <peter@retep.org.uk>