Problem On DB Sessions

Question

Hi
I am a java developer .I used oracle 10g Express Edition for my application database. while running my running my application I can find in administration database sessions queries like "SELECT VALUE FROM NLS_INSTANCE_PARAMETERS WHERE PARAMETER = 'NLS_DATE_FORMAT.....'.
My express edition capable of having 10 sessions in database. But this query occupying more than 7 queries. So I cannot run my application. If there are more users for my application connection to the database is refused.
What is this problem ? How can I rectify this? Any help would be helpful for me..

Answer 1

Firstly, you are probably in the wrong forum. There is a specific forum for Oracle Express Edition.
This forum is for Application Express (which is part of Express Edition, and can be put on any other edition too). Given your JDBC error, it doesn't look like you are building an application in Apex.
Depending on how your application is managing users/sessions, you are either stateful (each end user has a database session) or stateless (multiple end users share a pool of common database sessions). Stateful sessions can either have a separate process (or thread in Windows) for each session, or use multi-threaded server connections.
So the question is how many concurrent end users are you anticipating, how many concurrent sessions and how many concurrent active sessions. Since Express Edition only uses 1 CPU, that will probably be the bottleneck for active sessions, rather than networks.