SQL Relay http://sqlrelay.sourceforge.net/

From SQL Relay's home page:

SQL Relay is a persistent database connection pooling, proxying and load balancing system for Unix and Linux.

SQL Relay supports the following database backends:

   * Oracle
   * MySQL
   * mSQL
   * PostgreSQL
   * Sybase
   * MS SQL Server
   * IBM DB2
   * Interbase
   * Sybase
   * SQLite
   * Lago
   * ODBC
   * MS Access

SQL Relay includes a Tcl interface in the source distribution.


[Category Database]