Question

我将WildFly V 10.1.0与Mysql数据库一起使用。

我在standalone.xml

中的数据源配置中将最大池大小定义为100

但是我仍然会遇到异常[1];

我没有看到任何网络问题。我需要添加哪些其他设置？

我的persistence.xml

<persistence-unit name="adb-persistence-unit"
    transaction-type="JTA">
    <description>Forge Persistence Unit</description>
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <jta-data-source>java:jboss/datasources/testDS</jta-data-source>        
    <shared-cache-mode>ALL</shared-cache-mode>
 <property name="jboss.as.jpa.providerModule" value="org.hibernate:5.2"/>

        <property name="hibernate.c3p0.min_size" value="5" />   
   <property name="hibernate.c3p0.max_size" value="500" />  
<property name="hibernate.c3p0.timeout" value="1800" />     
<property name="hibernate.c3p0.max_statements" value="100" /> 
    <property name="hibernate.c3p0.idle_test_period" value="3000" /> 
    <property name="hibernate.c3p0.acquire_increment" value="5" />  
<property name="hibernate.c3p0.validate" value="false" />

我打开会话就像;

    @PersistenceContext
        protected EntityManager entityManager;
        private Criteria criteria;
        private Session session;

   session = getEntityManager().unwrap(Session.class);

[1]

/20/2016 9:52:04 AMCaused by: java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/testDS
10/20/2016 9:52:04 AM   at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:146)
10/20/2016 9:52:04 AM   at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:66)
10/20/2016 9:52:04 AM   at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
10/20/2016 9:52:04 AM   at org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35)
10/20/2016 9:52:04 AM   at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:99)
10/20/2016 9:52:04 AM   ... 225 more
10/20/2016 9:52:04 AMCaused by: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/testDS
10/20/2016 9:52:04 AM   at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:656)
10/20/2016 9:52:04 AM   at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:429)
10/20/2016 9:52:04 AM   at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:747)
10/20/2016 9:52:04 AM   at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
10/20/2016 9:52:04 AM   ... 229 more
10/20/2016 9:52:04 AMCaused by: javax.resource.ResourceException: IJ000655: No managed connections available within configured blocking timeout (30000 [ms])
10/20/2016 9:52:04 AM   at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:565)
10/20/2016 9:52:04 AM   at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getTransactionNewConnection(AbstractPool.java:699)
10/20/2016 9:52:04 AM   at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:598)
10/20/2016 9:52:04 AM   at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:590)
10/20/2016 9:52:04 AM   ... 232 more
10/20/

修改

数据源

     <datasources>
            <datasource jndi-name="java:jboss/datasources/testDS" pool-name="lobDS" enabled="true" use-java-context="true" use-ccm="true">
                <connection-url>jdbc:mysql://${env.MYSQL_PORT_3306_TCP_ADDR:db.xx.com}:${env.MYSQL_PORT_3306_TCP_PORT:3306}/${env.MYSQL_DATABASE:testdb}?failOverReadOnly=false&amp;maxReconnects=10&amp;zeroDateTimeBehavior=convertToNull&amp;autoReconnect=true&amp;characterEncoding=UTF-8&amp;characterSetResults=UTF-8&amp;useUnicode=true&amp;interactiveClient=true&amp;sessionVariables=storage_engine=InnoDB</connection-url>
                <driver>mysql</driver>
                <pool>
                    <flush-strategy>IdleConnections</flush-strategy>
 <max-pool-size>100</max-pool-size>  
                </pool>
                <security>
                    <user-name>${env.MYSQL_USER:admin}</user-name>
                    <password>${env.MYSQL_PASSWORD:ss_password}</password>
                </security>
                <validation>
                    <check-valid-connection-sql>SELECT 1</check-valid-connection-sql>
                    <background-validation>true</background-validation>
                    <background-validation-millis>60000</background-validation-millis>
                </validation>
            </datasource>

配置的阻塞超时（30000 [ms]）内没有可用的受管连接

0 个答案: