I have created a customed version of the MServer5.bat and MClient.bat to serve multiple databases. MServer5.bat : set MONETHOME=D:\Amber\Program\MonetDB\MonetDB5 set MONETDATAROOT=%1set MONETDATAROOT=%MONETDATAROOT:~0,-1%set MONETDBNAME=%2 if "%MONETDATAROOT%" == "" pauseif "%MONETDBNAME%" == "" pause set PATH=%MONETHOME%\bin;%MONETHOME%\lib;%MONETDB%\lib\MonetDB5;%PATH% set MONETDBFARM=--dbfarm="%MONETDATAROOT%\dbfarm"set SQLLOGDIR=--set "sql_logdir=%MONETDATAROOT%\sql_logs"set XQUERYLOGDIR=--set "xquery_logdir=%MONETDATAROOT%\xquery_logs" rem start the real server"%MONETHOME%\bin\mserver5.exe" --set "prefix=%MONETHOME%" --set "exec_prefix=%MONETHOME%" %MONETDBFARM% %SQLLOGDIR% --dbname=%MONETDBNAME% --dbinit="include sql;" MClient5.bat @set MONETHOME=D:\Amber\Program\MonetDB\MonetDB5 @set DBNAME=%1if "%DBNAME%" == "" pause @rem extend the search path with our EXE and DLL folders@rem we depend on pthreadVCE.dll having been copied to the lib folder@set PATH=%MONETHOME%\bin;%MONETHOME%\lib;%MONETHOME%\lib\bin;%PATH% @rem start the real client@"%MONETHOME%\bin\mclient.exe" -lsql -d %DBNAME% @if ERRORLEVEL 1 pause Using "MServer5.bat D:\MONETDB amber" I am able to start a new server process, ant it successfully created a new database in D:\MONETDB directory, but with the new server and default demo server process all running, I can't use mclient connect to the new database. MClient5.bat amber D:\>mclient.exe -E GB2312 -lsql -d amber!database 'amber' does not exist But the demo database can be connected to, and the new database can be connected to only when I close the demo database process. The netstat -a command shows there are two processes listening on port 50000. _________________________________________________________________ Invite your mail contacts to join your friends list with Windows Live Spaces. It's easy! http://spaces.live.com/spacesapi.aspx?wx_action=create&wx_url=/friends.aspx&mkt=en-us