Sorry for my ignorance but how do i check the thread stack?
2014-02-13 10:40 GMT-06:00 Romain Manni-Bucau <rmannibu...@gmail.com>: > 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 <maxtorz...@gmail.com>: > > 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 <rmannibu...@gmail.com>: > > > >> 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 <maxtorz...@gmail.com>: > >> > 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. < > smithh032...@gmail.com>: > >> > > >> >> 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 < > >> maxtorz...@gmail.com > >> >> >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 <maxtorz...@gmail.com>: > >> >> > > >> >> > > 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 < > rmannibu...@gmail.com > >> >: > >> >> > > > >> >> > > 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 < > maxtorz...@gmail.com > >> >: > >> >> > >> > 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* -------------------------------------------------------------------
