 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Java Forum / General / August 2007Tomcat hangs when connecting to Oracle
Hi! My Tomcat web application fails to connect to Oracle with the following setup. The browser just hangs and finally times out or the page doesn't change. It's like a typical packet filtering firewall situation but I flushed my iptables(with -F option) and my ISP answered me that they don't have any firewalls or whatever in their networks. CentOS 4 Linux with kernel 2.6.9-42.0.3.EL Tomcat 6.0.14 with native library 1.1.10 Tomcat Connector 1.2.25 When I create and run a Java application that simply connects to and gets some data from the Oracle server, all are fine. ie. only web applications(or web pages with Tomcat data sources) suffers the problem. Where should I look into? Thanks for reading. > My Tomcat web application fails to connect to Oracle with the > following setup. The browser just hangs and finally times out or the [quoted text clipped - 13 lines] > > Where should I look into? Tomcat log files seems as a good starting point. Arne > Tomcat log files seems as a good starting point. It just hangs. No logs are generated. It drives me crazy for hours. Oh, there's another thing to say. Sometimes a test JSP page with direct JDBC connect succeeds to connect sometimes immediately, sometimes in about 30 seconds. On Aug 17, 9:07 pm, ky...@naver.com wrote: > > Tomcat log files seems as a good starting point. > [quoted text clipped - 3 lines] > direct JDBC connect succeeds to connect sometimes immediately, > sometimes in about 30 seconds. Run 'top' and check if you see tomcat eating up CPU or memory while it blocks on a db call. Given the network latency issue, you can try traceroute from tomcat box to oracle box and check if you are not seeing any dropped packets (* in the output). This will also give you an idea of the hops and latency per hop. Run it a couple of times to get more data points... -cheers, Manish Sorry, it seems to be the problem in my application. One of my web page tried to connect to a shutdown server and it hanged all of other database connections. Never mind this threads. >> Tomcat log files seems as a good starting point. > > It just hangs. No logs are generated. It drives me crazy for hours. Tomcat should generate a log file even if it is running fine. Arne Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
|
Reply to this Message
|
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.