pgpool is a connection pool server for PostgreSQL. pgpool runs between PostgreSQL's clients (front ends) and servers (back ends). A PostgreSQL client can connect to pgpool as if it were a standard PostgreSQL server. pgpool caches the connection to a PostgreSQL server to reduce the overhead to establish the connection to it. Also, pgpool can use two PostgreSQL servers for fail over. If the first server goes down, pgpool will automatically switch to the secondary server. Moreover, pgpool supports scheduled switch over.
Zoned manages BerkeleyDB zone databases using the BDB Replication Base API. It manages all node communication and eases the difficulties that BerkeleyDB replication imposes (such as making sure that all zone changes go straight to the master node for transaction processing). It requires the BIND9 DLZ BDBHPT driver.
MyProfi is a commandline tool that parses MySQL query logs and outputs statistics for the queries found. The statistics shows the most popular, the slowest, and the most time-locked queries, as well as other valuable information, so the developer may easily see the problematic queries and start optimizing them right away. Queries are grouped together by their normalized view, so all variable parts of queries are stripped, which makes the statistics clearer and more useful.
migratedata allows you to write a simple XML file to define how to copy data from one database to another, possibly performing very simple transformations on the way. It is immediately able to help you migrate a PostNuke Web site to a WordPress one, and to perform any other transformations you will need to create your own XML spec file (which is reasonably simple).
G.O.SQL is a Web-based data management tool for Oracle. Currently, it supports 7 schema objects: table, view, index, sequence, function, procedure, and synonym. The project accepts input from user in the prescribed format and generates the required Oracle SQL statement code. It can also be used to help you learn the Oracle SQL language.