Tomcat stops working when more than 250-300 user are connected

I have one java application running on linux server. when number of active sessions are exceeded after 250 tomcat does not worked? I have following setting in tomcat setting file:

maxActive=1024 , session time out = 10 min ----> in context file maxThreads=1024 ----->in server.xml

Is the开发者_JS百科re any other setting for tomcat? Please give me solution for this ..... I am stuck with this problem.

Thanks in advance

You should check whether other limits e.g. kernel settings like: max open files per user etc. are hit.

You might also want to check your database connection pool settings