Hi José in linux, you can dump the threads using kill -3 pid where pid is the catalina process id
[] Leo On Thu, Feb 13, 2014 at 2:42 PM, José Luis Cetina <[email protected]>wrote: > Sorry for my ignorance but how do i check the thread stack? > > > 2014-02-13 10:40 GMT-06:00 Romain Manni-Bucau <[email protected]>: > > > check your thread stack. Note a wrong config can make connections not > > returning to pool IIRC > > Romain Manni-Bucau > > Twitter: @rmannibucau > > Blog: http://rmannibucau.wordpress.com/ > > LinkedIn: http://fr.linkedin.com/in/rmannibucau > > Github: https://github.com/rmannibucau > > > > > > > > 2014-02-13 17:39 GMT+01:00 José Luis Cetina <[email protected]>: > > > Ok. > > > > > > At this moment my webapp in production is loggin me: > > > > > > SEVERE: EjbTransactionUtil.handleSystemException: > > [ajp-bio-8009-exec-1458] > > > Timeout: Pool empty. Unable to fetch a connection in 90 seconds, none > > > available[size:250; busy:250; idle:0; lastwait:90000]. > > > > > > Pool empty, it means my 250 of 250 are using it? > > > > > > Any advice? > > > > > > > > > > > > > > > > > > 2014-02-13 10:35 GMT-06:00 Romain Manni-Bucau <[email protected]>: > > > > > >> No it is fine. > > >> Romain Manni-Bucau > > >> Twitter: @rmannibucau > > >> Blog: http://rmannibucau.wordpress.com/ > > >> LinkedIn: http://fr.linkedin.com/in/rmannibucau > > >> Github: https://github.com/rmannibucau > > >> > > >> > > >> > > >> 2014-02-13 17:18 GMT+01:00 José Luis Cetina <[email protected]>: > > >> > Thanks i already readed. Maybe what is happen is that my webapps are > > not > > >> > returning to the pool the database connection. > > >> > > > >> > I have a question: > > >> > > > >> > If i have a stateles bean using an entitymanager and doing any kind > of > > >> > operation in the database, when my method returns the connections is > > the > > >> > connections is closed and returned to the pool?? do i missing > > something? > > >> > > > >> > > > >> > //All my ejbs are like this > > >> > @Stateless > > >> > @TransactionManagement(TransactionManagementType.CONTAINER) > > >> > public class ConektaComprasOnlineGeneradasFacade{ > > >> > > > >> > @PersistenceContext(unitName = "anyName") > > >> > private EntityManager em; > > >> > > > >> > @TransactionAttribute(TransactionAttributeType.REQUIRED) > > >> > public void doSomeStuff(){ > > >> > MyObject x = new MyObject(); > > >> > em.persist(x); > > >> > //when this method is finished and the commit its done the > > >> database > > >> > connection is returned to the pool? do i have to close it? > > >> > } > > >> > > > >> > } > > >> > > > >> > > > >> > Thanks > > >> > > > >> > > > >> > > > >> > 2014-02-13 9:51 GMT-06:00 Howard W. Smith, Jr. < > > [email protected]>: > > >> > > > >> >> also, this one, and you can reach out to tomcat user list, too... > > >> >> > > >> >> > > >> >> > > >> > > > http://blog.christopherschultz.net/index.php/2009/03/16/properly-handling-pooled-jdbc-connections/ > > >> >> > > >> >> > > >> >> > > >> >> On Thu, Feb 13, 2014 at 10:34 AM, José Luis Cetina < > > >> [email protected] > > >> >> >wrote: > > >> >> > > >> >> > Then if tomee use tomcat-pool is this where the info really is? > > >> >> > > > >> >> > https://tomcat.apache.org/tomcat-7.0-doc/jdbc-pool.html not here > > >> >> > http://commons.apache.org/proper/commons-dbcp/configuration.html > > >> >> > > > >> >> > > > >> >> > 2014-02-13 9:32 GMT-06:00 José Luis Cetina <[email protected] > >: > > >> >> > > > >> >> > > What about this info in tomee web page > > >> >> > > > > >> >> > > "Internally, from TomEE 1.5.0, JDBC pools are managed via > > >> Tomcat-pool. > > >> >> > You > > >> >> > > can still switch back to Apache Commons DBCP by adding the > > following > > >> >> > > property: DataSourceCreator dbcp. To get the full list of > > available > > >> >> > > configuration properties, have a look to Apache Commons DBCP > > >> >> > configuration<http://commons.apache.org/dbcp/configuration.html> > > >> >> > > ." > > >> >> > > > > >> >> > > What is the difference between tomcat pool and dbcp, they share > > the > > >> >> same > > >> >> > > properties? > > >> >> > > > > >> >> > > > > >> >> > > 2014-02-13 9:23 GMT-06:00 Romain Manni-Bucau < > > [email protected] > > >> >: > > >> >> > > > > >> >> > > Hi, > > >> >> > >> > > >> >> > >> some read > > >> >> > >> > > http://commons.apache.org/proper/commons-dbcp/configuration.html;) > > >> >> > >> Romain Manni-Bucau > > >> >> > >> Twitter: @rmannibucau > > >> >> > >> Blog: http://rmannibucau.wordpress.com/ > > >> >> > >> LinkedIn: http://fr.linkedin.com/in/rmannibucau > > >> >> > >> Github: https://github.com/rmannibucau > > >> >> > >> > > >> >> > >> > > >> >> > >> > > >> >> > >> 2014-02-13 16:21 GMT+01:00 José Luis Cetina < > > [email protected] > > >> >: > > >> >> > >> > Hi, im having about 180 users at the same time connected to > my > > >> >> webapp, > > >> >> > >> > yesterday i got an mysql exception saying "Ton many > > connections" > > >> >> then > > >> >> > i > > >> >> > >> > read in blogs and update the property max_connections in > > my.cnf > > >> to > > >> >> 500 > > >> >> > >> > connections (i have a stand alone server for database only > > that > > >> has > > >> >> > >> 16gb of > > >> >> > >> > ram just for the OS and the DB) then in that post recommend > to > > >> >> adjust > > >> >> > >> that > > >> >> > >> > value (max_connections) accord to my pool connection. I use > a > > >> >> > datasource > > >> >> > >> > resource configured in tomee.xml and i have this > > >> >> > >> > > > >> >> > >> > <Resource id="any" type="DataSource"> > > >> >> > >> > JdbcDriver com.mysql.jdbc.Driver > > >> >> > >> > JdbcUrl ... > > >> >> > >> > UserName xxx > > >> >> > >> > Password xxx > > >> >> > >> > jtaManaged true > > >> >> > >> > initialSize=30 > > >> >> > >> > MaxActive=500 (my old value was 250) > > >> >> > >> > MaxIdle=50 > > >> >> > >> > MaxWait=90000 > > >> >> > >> > MaxWaitTime=90000 > > >> >> > >> > validationQuery=SELECT 1 > > >> >> > >> > testOnBorrow=true > > >> >> > >> > </Resource> > > >> >> > >> > > > >> >> > >> > Then i have this questions: > > >> >> > >> > > > >> >> > >> > 1.What advice can you give me for handle around 180 users > that > > >> use > > >> >> my > > >> >> > >> app > > >> >> > >> > an hit the database with each action. > > >> >> > >> > I use JSF (@NamedBeans) + EJB (All my EJBS are statless) + 1 > > >> >> > SessionBean > > >> >> > >> > (@Named) for each users. > > >> >> > >> > > > >> >> > >> > 2. Which is the difference between MaxIdle and MaxActive? > > >> >> > >> > > > >> >> > >> > 3. Which is the default timeout for close inactive > connections > > >> and > > >> >> > what > > >> >> > >> is > > >> >> > >> > the name of the property? > > >> >> > >> > > > >> >> > >> > > > >> >> > >> > > > >> >> > >> > I will be happy with any kind of advice. > > >> >> > >> > > > >> >> > >> > I use 2 servers with this configuration and tomee and both > of > > >> them > > >> >> > read > > >> >> > >> to > > >> >> > >> > other server where the database is (2 webapp server + 1 db > > >> server). > > >> >> > >> > > > >> >> > >> > > > >> >> > >> > > > >> >> > >> > > > >> >> > >> > > > >> ------------------------------------------------------------------- > > >> >> > >> > *José Luis Cetina* > > >> >> > >> > > > >> ------------------------------------------------------------------- > > >> >> > >> > > >> >> > > > > >> >> > > > > >> >> > > > > >> >> > > -- > > >> >> > > > > ------------------------------------------------------------------- > > >> >> > > *José Luis Cetina* > > >> >> > > > > ------------------------------------------------------------------- > > >> >> > > > > >> >> > > > >> >> > > > >> >> > > > >> >> > -- > > >> >> > > ------------------------------------------------------------------- > > >> >> > *José Luis Cetina* > > >> >> > > ------------------------------------------------------------------- > > >> >> > > > >> >> > > >> > > > >> > > > >> > > > >> > -- > > >> > ------------------------------------------------------------------- > > >> > *José Luis Cetina* > > >> > ------------------------------------------------------------------- > > >> > > > > > > > > > > > > -- > > > ------------------------------------------------------------------- > > > *José Luis Cetina* > > > ------------------------------------------------------------------- > > > > > > -- > ------------------------------------------------------------------- > *José Luis Cetina* > ------------------------------------------------------------------- >
