Connection pool size

[surya sudhakar]

Hi all,
I want to use the Connection pooling and Datasourace support given by JDBC in my project. I am configuring and looking up the Datasource in IBM websphere. What are the various points to be considered to decide the size of the pool. In my application I have both real-time as well as the batch updates to the database. In case of batch it may take around 3-5 minitues to complete the batch. In such a case if I go for a pool of less size(around 10) then I think for that duration of that time the conenction will on hold(I think). In such a case if so many clients initialize the batch then all the connection will be on hold, so, the responce time will gets reduced. In such a condition, how can I ensure that the response time is less with the use of Connection pool.
Thanks in advance
Sudhakar

[Chris Mathews]

Why not create two separate Connection Pools? One for web requests and one for the batch processes.
This would be my approach due to the vastly different requirements of the two types of operations.