Howdy, Can you share your code that serves the page that locked up? Yoav Shapira Millennium ChemInformatics
>-----Original Message----- >From: Hooper, Brian [mailto:[EMAIL PROTECTED] >Sent: Friday, January 09, 2004 11:19 AM >To: Tomcat Users List >Subject: Tomcat Deadlock > >I'm having a weird problem with Tomcat locking up. I have a couple of >functions on my site that rely heavily on transactions. To do a simple >load test, I picked the function that hits the database the most and >opened that same page in two different browser windows. I hit the >submit button at roughly the same time, and waited. It appeared that >both browser windows stalled. I looked at the processes in SQL Server >(2000) and it said that all of the processes for the app were sleeping, >and the two being used were sitting on insert statements for the same >table (database deadlock?). I let both browsers sit trying to load for >a lot longer than it should have taken for the page to finish, then just >closed the windows. After that, the site was no longer accessible. The >only way to get it working again was to restart the Tomcat service. > >Looking at the various log files, the only entry that appears >interesting is the following from the site's log: >2004-01-09 10:43:18 StandardWrapper[/WIPT:action]: Waiting for 2 >instance(s) to be deallocated > >I'm using tomcat 4.1.27 with SQL Server 2000 on a Win2K box. I've been >having similar problems off and on for the last couple of weeks and have >tried a number of different things to fix it. I made sure I closed all >connections, statements, and result sets. I put all of the close code >in a finally block. Another quick question - if the browser is closed >in the middle of an operation, is the code in the finally block >executed? > >Here is the JNDI data source definition from server.xml: > > <Resource name="jdbc/WIPTDataSource" auth="Container" >type="javax.sql.DataSource"/> > <ResourceParams name="jdbc/WIPTDataSource"> > ><parameter><name>factory</name><value>org.apache.commons.dbcp.BasicData S >ourceFactory</value></parameter> > > ><parameter><name>driverClassName</name><value>com.jnetdirect.jsql.JSQLD r >iver</value></parameter> > ><parameter><name>url</name><value>jdbc:JSQLConnect://XXXX:1433/WIPT</va l >ue></parameter> > <parameter><name>username</name><value>XXXX</value></parameter> > <parameter><name>password</name><value>XXXX</value></parameter> > > <parameter><name>maxActive</name><value>15</value></parameter> > <parameter><name>maxIdle</name><value>15</value></parameter> > <parameter><name>minIdle</name><value>2</value></parameter> > <parameter><name>maxWait</name><value>10000</value></parameter> > > <parameter><name>validationQuery</name><value>SELECT >1+1</value></parameter> > <parameter><name>testOnBorrow</name><value>true</value></parameter> > <parameter><name>testOnReturn</name><value>true</value></parameter> > <parameter><name>testWhileIdle</name><value>true</value></parameter> > ><parameter><name>timeBetweenEvictionRunsMillis</name><value>1800000</va l >ue></parameter> > <parameter><name>testWhileIdle</name><value>true</value></parameter> > ><parameter><name>numTestsPerEvictionRun</name><value>3</value></paramet e >r> > > ><parameter><name>removeAbandoned</name><value>true</value></parameter> > ><parameter><name>removeAbandonedTimeout</name><value>300</value></param e >ter> > <parameter><name>logAbandoned</name><value>true</value></parameter> > </ResourceParams> > >Thanks! >-Brian > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
