oracle的许可证可以按两种方式购买，named user 或cpu, 你所提的25个用户即25个named user, 即你可以让25个真正的“人”来使用这个数据库，这25个人是张三、李四、王五....等25个人，若第26个人也要用这个数据库，从法律角度是不允许的，这可以从这种许可成为named user 而不是current user来理解。 按cpu来购买， 简单的说就是说你的数据库server有几个cpu就要买相应个数的cpu对应的许可证（当然还有些实际折算的问题，如cpu主频，目前双核cpu折算等）。 无论是按named user 还是cpu购买， 都有一个最低要求， 比如若买enterprise edition , 按named user 至少要买10个 Named User Plus: is defined as an individual authorized by you to use the programs which are installed on a single server or multiple servers, regardless of whether the individual is actively using the programs at any given time. A non human operated device will be counted as a named user plus in addition to all individuals authorized to use the programs, if such devices can access the programs. If multiplexing hardware or software (e.g., a TP monitor or a web server product) is used, this number must be measured at the multiplexing front end. Automated batching of data from computer to computer is permitted. You are responsible for ensuring that the named user plus per processor minimums are maintained for the programs contained in the user minimum table in the licensing rules section; the minimums table provides for the minimum number of named users plus required and all actual users must be licensed.
各位弟兄有随真正试验过能同时连接多少个连接用户挖？？
那oracle的连接最多数是多少挖？mssqlserver可以很多的噢！～
Named User Plus: is defined as an individual authorized by you to use the programs which are installed on a single server or multiple servers, regardless of whether the individual is actively using the programs at any given time. A non human operated device will be counted as a named user plus in addition to all individuals authorized to use the programs, if such devices can access the programs. If multiplexing hardware or software (e.g., a TP monitor or a web server product) is used, this number must be measured at the multiplexing front end. Automated batching of data from computer to computer is permitted. You are responsible for ensuring that the named user plus per processor minimums are maintained for the programs contained in the user minimum table in the licensing rules section; the minimums table provides for the minimum number of named users plus required and all actual users must be licensed.