【c3p0 空指针异常 com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.】的更多相关文章

c3p0 空指针异常 com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.

com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@11d9f05 -- 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 atte…

数据库连接错误：CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.

学习Spring整合Hibernate的知识,新建一个工程,代码结构如下: 按如下步骤整合: 代码如下: hibernate.cfg.xml: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://…

解决：CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.

log4j给出的异常信息有下面几句: Caused by: org.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection at ... Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database! at ... Caused by: com.mchange.v2.re…

A ResourcePool could not acquire a resource from its primary factory or source

出处:http://aaron81939097.iteye.com/blog/1144642 原配置: <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- 指定连接数据库的JDBC驱动 --> <property name="driverClass"> <value>com.mysql.jdbc.…

启动SpringBoot web项目出现 Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3,....

详细错误信息: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -&g…

c3p0的错误mchange.v2.ser.Indirector

  mchange-commons-java-0.2.11.jar   没有会报错 (java.lang.NoClassDefFoundError:com.mchange.v2.ser.Indirector) 2 XML配置文件一定要小心 一个标点都不能错!!!! <property name="jdbcUrl">jdbc:mysql://127.0.0.1:3306/demo</property> mysql 后由于误操作少了个/   导致驱动找不到…

关于使用C3P0程序报错Having failed to acquire a resource, com.mchange.v2.resourcepool的问题

由于是新手的问题,C3P0的使用时严格跟着视频来的,但是问题却来的很突然 在导入了三个包以及创建了路径以后 进行测试 class JdbcutilsTest { @Test void TestGetConnection() { Connection conn = Jdbcutils.getConnection(); System.out.println(conn); } } 第一个问题:named-config with name 'BarryLee' does not exist也就是找不到名…

连接mysql提示com.mchange.v2.resourcepool.BasicResourcePool

1.com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@6ff9129c com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@6ff9129c -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed ).…

02-Nov-2017 07:11:56.475 信息 [http-nio-8080-exec-10] com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource. Initializing c3p0 pool...

报错: 02-Nov-2017 07:11:56.475 信息 [http-nio-8080-exec-10] com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource. Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay…

com.mchange.v2.c3p0.impl.NewPooledConnection@be1839d closed by a client的正确解答

关于c3p0在debug模式下控制台抛出的如下异常: java.lang.Exception: DEBUG -- CLOSE BY CLIENT STACK TRACE at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:566) at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:23…