Is the number of concurrent connections particular to a specific data base?

Is the number of concurrent connections particular to a dat开发者_Python百科abase or to the whole mysql database server?

The number is whatever you want it to be. However, if you want to limit it, MySQL allows you do it at several levels:

• For the whole server: set the max_connections global variable
• For each user: issue the appropriate GRANT command

See also http://dev.mysql.com/doc/refman/5.1/en/too-many-connections.html