25.6. Notes for Microsoft Windows users

The current configuration of eXo JCR uses Apache DBCP connection pool (org.apache.commons.dbcp.BasicDataSourceFactory).
It is possible to set a high value for the maxActive parameter in the configuration.xml file. This creates a high use of TCP/IP ports from a client machine inside the pool (the JDBC driver, for example). As a result, the data container can throw exceptions like "Address already in use".
To solve this problem, you must configure the client's machine networking software to use shorter timeouts for open TCP/IP ports.
This is done by editing two registry keys within the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters node. Both of these keys are unset by default. To set the keys as required:

Procedure 25.4. 

  1. Set the MaxUserPort registry key to =dword:00001b58. This sets the maximum of open ports to 7000 or higher (the default is 5000).
  2. Set TcpTimedWaitDelay to =dword:0000001e. This sets TIME_WAIT parameter to 30 seconds (the default is 240).

Example 25.4. Sample Registry File

Windows Registry Editor Version 5.00