We are experiencing problems running Tomcat 4.1.24 with Apache 2.0.47 and Oracle 9i all on Solaris 8 on Unix 3 boxes. We have 4 instances of Tomcat running with 1 instance of Apache. Here�s what we were experiencing: 1)When 50 concurrent users try logging in, the application would slow down tremendously and would sometimes even crash the oracle instance. a)We did resolved this partially by adding (AbandonedTimeout = 60) to the server.xml file to our DefaultContext. b)We are still experiencing slow downs or system hanging for a period of 1 or 2 minutes and then coming back real fast. We have run an Oracle profiler and can�t seem to find any issues with it. We have checked to make sure all the connections are being closed through code. We have also checked the Tomcat server.xml file to make sure its configured right. We also ran top to watch the processes and memory nothing seems to be out of control. We are running out of ideas, can anyone suggest any ideas? Thanks.