java.util.NoSuchElementException: Timeout waiting for idle object
	at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:825)
	at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:96)
	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
	at org.apache.openjpa.lib.jdbc.DelegatingDataSource.getConnection(DelegatingDataSource.java:106)
	at org.apache.openjpa.lib.jdbc.DecoratingDataSource.getConnection(DecoratingDataSource.java:87)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connectInternal(JDBCStoreManager.java:945)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:930)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.getConnection(JDBCStoreManager.java:230)
	at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:371)
	at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:325)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.getInitializeStateResult(JDBCStoreManager.java:503)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initializeState(JDBCStoreManager.java:322)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:278)
	at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:111)
	at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57)
	at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:913)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:871)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:788)
	at org.apache.openjpa.kernel.DelegatingBroker.find(DelegatingBroker.java:183)
	at org.apache.openjpa.persistence.EntityManagerImpl.find(EntityManagerImpl.java:452)
	at org.apache.magma.database.openjpa.JPADatabase.load(JPADatabase.java:51)
	at org.apache.magma.database.DatabaseConverter.from(DatabaseConverter.java:45)
	at org.apache.magma.database.DatabaseConverter.from(DatabaseConverter.java:1)
	at org.apache.magma.website.WebHandler.convertParameters(WebHandler.java:205)
	at org.apache.magma.website.WebHandler.bindParameters(WebHandler.java:177)
	at org.apache.magma.website.WebHandler.find(WebHandler.java:132)
	at org.apache.magma.website.WebHandler.find(WebHandler.java:142)
	at org.apache.magma.website.WebHandler.find(WebHandler.java:115)
	at org.apache.magma.website.Dispatch.findProducer(Dispatch.java:329)
	at org.apache.magma.website.Dispatch.handle(Dispatch.java:109)
	at org.apache.magma.website.Dispatch.doGet(Dispatch.java:69)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
	at java.lang.Thread.run(Thread.java:636)
org.apache.magma.basics.MagmaException: Error retrieving class it.semeru.projects.semeruwebsite.domain.Technology using primary key "451"
Error invoking 

	at org.apache.magma.database.DatabaseConverter.init$_aroundBody4(DatabaseConverter.java:58)
	at org.apache.magma.database.DatabaseConverter.from(DatabaseConverter.java:58)
	at org.apache.magma.database.DatabaseConverter.from(DatabaseConverter.java:1)
	at org.apache.magma.website.WebHandler.convertParameters(WebHandler.java:205)
	at org.apache.magma.website.WebHandler.bindParameters(WebHandler.java:177)
	at org.apache.magma.website.WebHandler.find(WebHandler.java:132)
	at org.apache.magma.website.WebHandler.find(WebHandler.java:142)
	at org.apache.magma.website.WebHandler.find(WebHandler.java:115)
	at org.apache.magma.website.Dispatch.findProducer(Dispatch.java:329)
	at org.apache.magma.website.Dispatch.handle(Dispatch.java:109)
	at org.apache.magma.website.Dispatch.doGet(Dispatch.java:69)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
	at java.lang.Thread.run(Thread.java:636)
Caused by:  org.apache.openjpa.persistence.PersistenceException: Cannot get a connection, pool error Timeout waiting for idle object
	at org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4246)
	at org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4211)
	at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:102)
	at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:88)
	at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:64)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:934)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.getConnection(JDBCStoreManager.java:230)
	at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:371)
	at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:325)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.getInitializeStateResult(JDBCStoreManager.java:503)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initializeState(JDBCStoreManager.java:322)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:278)
	at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:111)
	at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57)
	at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:913)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:871)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:788)
	at org.apache.openjpa.kernel.DelegatingBroker.find(DelegatingBroker.java:183)
	at org.apache.openjpa.persistence.EntityManagerImpl.find(EntityManagerImpl.java:452)
	at org.apache.magma.database.openjpa.JPADatabase.load(JPADatabase.java:51)
	at org.apache.magma.database.DatabaseConverter.from(DatabaseConverter.java:45)
	... 23 more
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object
	at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:104)
	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
	at org.apache.openjpa.lib.jdbc.DelegatingDataSource.getConnection(DelegatingDataSource.java:106)
	at org.apache.openjpa.lib.jdbc.DecoratingDataSource.getConnection(DecoratingDataSource.java:87)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connectInternal(JDBCStoreManager.java:945)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:930)
	... 38 more
Caused by: java.util.NoSuchElementException: Timeout waiting for idle object
	at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:825)
	at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:96)
	... 43 more