Oracle 9iAS is rolling back all my transactions...any idea why?

Question

Hi Guys,
I am involved in developing a medium sized J2EE Application Running on Oracle9iAS
Develeopment Version obtained from OTN.(version 1.0.2.2a)
The backend DB is Oracle8i RDBMS.
It has Browser based web client.
It is presently having 2- stateless session beans, with one bean acting as
Session Facade(as per J2EE Blueprints 1.2)
All transactions are container managed.
Following observations are made while load testing:
1. 9iAS Server rollbacks all the transactions when number of simultaneous
users exceeds 45.
Following are the Queries:
1. Is there any restriction on the number of Concurrent Transactions on the
9iAS Server Development version.
2. Is there any restriction on the pool size of the Resource Manager(Data
base in this case) on the 9iAS Development Version.
3. Exactly what is the difference between the Development and the Proper
Production release.
4. Are there any thing to do with my RAM?
This is my data-sources.xml -
<?xml version="1.0"?>
<!DOCTYPE data-sources PUBLIC "Orion data-sources" " " target="_new">http://xmlns.oracle.com/ias/dtds/data-sources.dtd">
<data-sources>
<data-source
class="com.evermind.sql.DriverManagerDataSource"
name="demoPool"
location="demoPool"
xa-location="jdbc/demoPool"
ejb-location="jdbc/demoPool"
connection-driver="oracle.jdbc.driver.OracleDriver"
max-connect-attempts="10"
max-connections="1000"
username="cue"
password="cue"
url="jdbc:oracle:thin:@163.122.23.104:1521:CALVYN"
inactivity-timeout="30"
</data-sources>
Thanks in advance

Answer 1

Do you have any more information related to this? I don't see any errors. Are you getting any other indications like a timeout or something else? Are there any database errors being recieved?
1. Is there any restriction on the number of Concurrent Transactions on the 9iAS Server Development version. No.
2. Is there any restriction on the pool size of the Resource Manager(Data base in this case) on the 9iAS Development Version. No.
3. Exactly what is the difference between the Development and the Proper Production release. The core J2EE components are the same.
4. Are there any thing to do with my RAM? Not likely.
Thanks -- Jeff