|      Connections could not be acquired from the underlying database!        hola amigos tengo este problema al intentar conectarme desde mi app a la bdd en mysql al levantar el tomcat   
*********************ERROR************************  *   
[HibernateFactory.init]  DB Persistence Manager Loading 
[HibernateFactory.init]  App Initialization Servlet :Creating hibernate configuration 
[HibernateFactory.init]  App Initialization Servlet :Configuring hibernate 
[HibernateFactory.init]  App Initialization Servlet :Creating Hibernate Session Factory 
13:59:16,437  INFO MLog:80 - MLog clients using log4j logging. 
13:59:16,500  INFO C3P0Registry:77 - Initializing c3p0-0.9.0 [built 11-July-2005 00:43:29 -0400; debug? true; trace: 10] 
13:59:16,968  INFO PoolBackedDataSource:257 - Initializing c3p0 pool... com.mchange.v2.c3p0.PoolBackedDataSource@9ac0f5 [ connectionPoolDataSource -> com.mchange.v2.c3p0.WrapperConnectionPoolDataSourc  e@1c486f2 [ acquireIncrement -> 1, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1c486f2, idleConnectionTestPeriod -> 0, initialPoolSize -> 2, maxIdleTime -> 5000, maxPoolSize -> 100, maxStatements -> 100, maxStatementsPerConnection -> 0, minPoolSize -> 2, nestedDataSource -> com.mchange.v2.c3p0.DriverManagerDataSource@12c955  7 [ description -> null, driverClass -> null, factoryClassLocation -> null, identityToken -> 12c9557, jdbcUrl -> jdbc:mysql://localhost/objects/bdd, properties -> {user=******, password=******} ], preferredTestQuery -> null, propertyCycle -> 300, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, usesTraditionalReflectiveProxies -> false ], factoryClassLocation -> null, identityToken -> 9ac0f5, numHelperThreads -> 3 ] 
13:59:46,406  WARN BasicResourcePool:1222 - com.mchange.v2.resourcepool.BasicResourcePool$Acqu  ireTask@bd09e8 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). 
13:59:46,421  WARN SettingsFactory:107 - Could not obtain connection metadata 
java.sql.SQLException: Connections could not be acquired from the underlying database! 
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estoy trabajndo con java hibernate tomcat y mysql y lo q creo es q el error viene de la configuracion del hibernate   
esta es la inf del properties del hibernate   
****************PROPERTY*******************   
hibernate.query.substitutions true 1, false 0, yes 'Y', no 'N' 
hibernate.dialect net.sf.hibernate.dialect.MySQLDialect 
hibernate.connection.driver_class org.gjt.mm.mysql.Driver 
hibernate.connection.driver_class com.mysql.jdbc.Driver 
hibernate.connection.url jdbc:mysql://localhost/objects/bdd 
hibernate.connection.username us 
hibernate.connection.password ps 
hibernate.c3p0.max_size 100 
hibernate.c3p0.min_size 2 
hibernate.c3p0.timeout 5000 
hibernate.c3p0.max_statements 100 
hibernate.c3p0.validate false 
hibernate.proxool.pool_alias pool1 
hibernate.show_sql false 
hibernate.hbm2ddl.auto update 
hibernate.jdbc.batch_size 0 
hibernate.jdbc.use_streams_for_binary true 
hibernate.max_fetch_depth 2 
hibernate.cglib.use_reflection_optimizer=false   
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mi bdd esta hecha en mysql con pasword ps y username us el la direccion mysql://localhost/objects/bdd/   
la version del mysql es 3.24.38 y poseo el driver de la misma en las libs de la app ya de verdad no encuentro q hacer si alguien conoce las posibles razones o ve algo que este mal colocado por favor denme una manito!  http://www.forosdelweb.com/images/icons/icon10.gif 
Alegría           |