After updating the tomee version from apache-tomee-jaxrs-1.5.2 To apache-tomee-jaxrs-1.7.4, Getting following exception on thread but there are other code is executing without thread its working fine. Name [jdbc/mydb] is not bound in this Context. Unable to find [jdbc]. com.test.test1.PolicyManager-:getUserPreferences: java.sql.SQLException: PooledConnection has already been closed. apache-tomee-jaxrs-1.5.2 ->tomee.xml file. JdbcDriver com.mysql.jdbc.jdbc2.optional.MysqlDataSource JdbcUrl jdbc:mysql://localhost:3306/demmo UserName root Password root JtaManaged false InitialSize 50 MaxActive 100 MaxIdle 3 LogAbandoned true apache-tomee-jaxrs-1.7.4-> tomee.xml file. JdbcDriver com.mysql.jdbc.Driver JdbcUrl jdbc:mysql://localhost:3306/demo UserName root Password root JtaManaged false InitialSize 50 MaxActive 100 MaxIdle 3 LogAbandoned true Web.xml is same. Likes following. MySQL Datasource example jdbc/mydb javax.sql.DataSource The error is coming when the web Applicaiton creating the new thread for sending the notificaiton. The same code is working on older version of apache tomee but on new version it is not working. any suggestion? -- Sent from: http://tomee-openejb.979440.n4.nabble.com/TomEE-Users-f979441.html