Hi Matthias, > Hi > I try again to get help from some one. We try to run > multiple users (up to 3000) to a webbased prototype that uses OJB and > runs on Websphere 4.x on z/OS. The Database is DB2. > Run the tests with one user works. Run the test with more > then one (50 or > 100) we get > in moste case (48 or 98 users) the following error message: > method is not valid on a closed logical connection.prepareStatement() > SQLSTATE=57015 and SQLCODE=-923 > Have some body an idee what the problem can be? > Is there some one how is working successfull with Websphere > 4.x on z/OS with > db2 and OJB? > > The problem is only on z/OS. If the Websphere is running on > NT (DB2 on z/OS) > then 50 users works > with out problems
We are also using a similar setup with an Appserver on WIndows and DB2 on zOS without problems with a large user base. We originally planned to run our servlets also on Wepshpere zOS, but we did not manage to get things running in a reasonable timeframe. I know that there are several problems with the JDBC driver and also the pooling JDBC driver on zOS. I assume that you encounter a similar problem. Maybe you can try to play around with the JDBC driver settings a bit. Maybe you can bypass the pooling driver and use the OJB built in pooling directly. Unfortunately I have no real solution at hand :-( cu, Thomas > > Thanks for every hint > > regards > > Matthias Roth > > Bundesamt f�r Informatik und Telekommunikation BIT > Office f�d�ral de l'informatique et de la t�l�communication OFIT > > Ufficio federale dell'informatica e della telecomunicazione UFIT > Monbijoustrasse 74, CH-3003 Bern > > Tel. ++41 (0)31 325 84 68 > Fax ++41 (0)31 325 97 54 > [EMAIL PROTECTED] > http://www.bit.admin.ch/ > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
