Users of the open source database PostgreSQL may want to check out a database server back-up utility released last week by vendor BakBone Software.The NetVault Application Plugin Module (APM) for PostgreSQL is a utility that could be used to configure a system of scheduled backups for Linux\/PostgreSQL servers. The APM software runs on a Linux\/PostgreSQL box and allows admins to back up a database server in its entirety, or target certain pieces of a database for backup. Back-up functions can be performed while a server is online, or offline.PostgreSQL has actually been around longer than Linux. It was developed in 1986 at the University of California at Berkeley as a research project (originally running on Unix), but the software is now widely associated with Linux and the open source movement. It runs on both Linux and Sun's Solaris.The database is used to power small Linux-based Web servers, as well as large high-transaction enterprises, such as running financial, operational and clinical databases at Shannon Medical Center in San Angelo, Texas. The software is also used to run Web servers for manufacturing giant BASF.In addition to PostgreSQL, BakBone offers APM software for backing up MySQL Linux databases, as well as back-up utilities for commercial databases that run on Linux, such as Oracle and IBM's DB2.The PostgreSQL APM software for Linux is available now for $1,075. A 45-day trial version of the software is available for free.