By default fairQueue is set to true and the value of maxWait is 30 seconds. I will try increasing the maxwait to 60 seconds and see if that buys tomcat enough time to return connections to the pool and have it available for the next connection request. Will let you know.
On Thu, Jun 28, 2012 at 1:36 PM, Filip Hanik (mailing lists) < devli...@hanik.com> wrote: > Then the issue you may be running into is that your Tomcat configuration > supports a higher concurrency level than what your Resin configuration is > setup to do. > With higher concurrency, there will be a need for more data base > connections. If you still want to run with a lower number of connections, > what you can do is set > > fairQueue="true" > maxWait="time in milliseconds to wait for next available connection" > > and what this effectively will do, is lower your concurrency. Recommended > is > of course to increase maxActive if the database supports it. > > Filip > > > > -----Original Message----- > > From: Yasser [mailto:yarafa...@gmail.com] > > Sent: Thursday, June 28, 2012 11:33 AM > > To: Tomcat Users List > > Subject: Re: Tomcat 7.0.28 connection pool issue > > > > That was the issue with Tomcat 7.0.26 and they fixed it in 7.0.28 > > > > > > On Thu, Jun 28, 2012 at 11:54 AM, Filip Hanik (mailing lists) < > > devli...@hanik.com> wrote: > > > > > Could you have run into > > > https://issues.apache.org/bugzilla/show_bug.cgi?id=53367 > > > > > > ? > > > > > > You could try out > > > http://people.apache.org/~fhanik/jdbc-pool/bz53367-jdbc-pool.jar > > > > > > > > > > -----Original Message----- > > > > From: Yasser [mailto:yarafa...@gmail.com] > > > > Sent: Thursday, June 28, 2012 9:39 AM > > > > To: Tomcat Users List > > > > Subject: Re: Tomcat 7.0.28 connection pool issue > > > > > > > > Yes. It does show that maxactive has reached 100. I also use splunk > > to > > > > get > > > > the connection status at the oracle side. > > > > What I dont understand is that Resin needs just 50 connections to > > handle > > > > the same load. I am in the process of increasing the count to 300 > > and > > > > see > > > > if that makes a difference. Oracle has the capacity to handle that > > many > > > > connections. > > > > > > > > > > > > On Thu, Jun 28, 2012 at 11:01 AM, Hedrick, Brooke - 43 < > > > > brooke.hedr...@rainhail.com> wrote: > > > > > > > > > > > > > > > -----Original Message----- > > > > > > From: Yasser [mailto:yarafa...@gmail.com] > > > > > > Sent: Thursday, June 28, 2012 9:44 AM > > > > > > To: users@tomcat.apache.org > > > > > > Subject: Tomcat 7.0.28 connection pool issue > > > > > > > > > > > ... > > > > > > What is the issue? > > > > > > When we run a stress test on the same codebase deployed to > > Tomcat > > > > 7.0.28, > > > > > > at about 2hr45min into the test with 530 virtual users logged in > > (at > > > > > peak load), > > > > > > I get a lot of connection pool empty errors. The maxactive > > attribute > > > > > (using > > > > > > tomcat connection pool) has been set to 100. > > > > > > > > > > > > > > > > Have you used jconsole to monitor the pool usage? > > > > > > > > > > -Brooke > > > > > > > > > > > Other information: > > > > > > CAS runs on a different server with a dedicated tomcat home and > > > > base. I > > > > > > dont see any errors on this box. > > > > > > 7.0.26 was found to have a bug in the way connection count is > > > > determined, > > > > > > which got fixed in 7.0.28, hence we switched to the latest > > version. > > > > > > > > > > > > Here is one of the connection pool config from server.xml. We do > > a > > > > > resource > > > > > > link to this pool in the context.xml > > > > > > > > > > > > <Resource name="jdbc/global-wl" auth="Container" > > > > > > type="javax.sql.DataSource" username="webconnect" > > > > > > password="xxxxxxx" > > > > > > driverClassName="oracle.jdbc.driver.OracleDriver" > > > > > > > > > > > > > > url="jdbc:oracle:thin:@&&dbs.ip&&:&&oracle.db.port&&:&&dts.dbname&& > > > > > > " > > > > > > > > factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" > > > > > > maxActive="100" /> > > > > > > > > > > > > Any help is appreciated. Please let me know if you need more > > > > information > > > > > or > > > > > > code snippets. > > > > > > > > > > > > Thanks, > > > > > > > > > > > > Yasser > > > > > > > > > > ------------------------------------------------------------------ > > --- > > > > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > > > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
