Does anybody know if it is possible to have Grid in case of using Mysql?
Is it caused a lot problems?

And if i develop project with grid and Mysql should we buy license for each computer and does mysql license is per year?

Please help

MySQL can be free or you can pay a license fee for it

for details check the MySQL website
it should go without saying if you don't buy a license then you get minimal support (if any) from MySQL, buy a license and you get support (and you help MySQL develop the product further).

what's a grid?

Yeah, what's a grid? Are you by chance talking about displaying your results in a grid type of format?

You can visit following site to find information about grid computing
http://en.wikipedia.org/wiki/Grid_computing

Ah, "clustering".. I haven't yet set up clustering but I will be following this thread to see what everyone else has to offer.

For example: it's the "g" in Oracle 10g and 11g
(I know this is the MySQL forum, but the term grid is pretty whitespread)

I have found following link about it
http://www.howtoforge.com/loadbalanc...cluster_debian