oracle 错误

2014-12-03 09:33:16 119 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

MC1496乘法器AM调制电路搭建全流程（附Multisim 14.0仿真文件）本文提供了基于MC1496乘法器搭建AM调制电路的完整实战指南。针对仿真模型缺失的痛点，详细讲解了从晶体管级手动构建MC1496等效模型，到外围电路设计、调制度参数计算与调节，并在Multisim 14.0中进行仿真验证的全流程。通过深度剖析MC1496内部原理与AM信号调制机制，帮助读者获得从仿真到实践的可控设计与排错能力。阅读详情



JDBCExceptionReporter - SQL Error: 0, SQLState: null

JDBCExceptionReporter - Cannot create PoolableConnectionFactory (Io 异常: The Network Adapter could not establish the connection)

SettingsFactory - Could not obtain connection metadata

org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常: The Network Adapter could not establish the connection)

	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:855)

	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540)

	at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:80)

	at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:111)

	at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2101)

	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1325)

	at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:777)

	at org.springframework.orm.hibernate3.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:703)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)

	at java.security.AccessController.doPrivileged(Native Method)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)

	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)

	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)

	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)

	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)

	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423)

	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)

	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)

	at org.springframework.web.struts.ContextLoaderPlugIn.createWebApplicationContext(ContextLoaderPlugIn.java:354)

	at org.springframework.web.struts.ContextLoaderPlugIn.initWebApplicationContext(ContextLoaderPlugIn.java:295)

	at org.springframework.web.struts.ContextLoaderPlugIn.init(ContextLoaderPlugIn.java:225)

	at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:839)

	at org.apache.struts.action.ActionServlet.init(ActionServlet.java:332)

	at javax.servlet.GenericServlet.init(GenericServlet.java:160)

	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)

	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)

	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)

	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5027)

	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)

	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

	at java.util.concurrent.FutureTask.run(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

	at java.lang.Thread.run(Unknown Source)

Caused by: java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection

	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)

	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)

	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:254)

	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:386)

	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:413)

	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:164)

	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)

	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:752)

	at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:37)

	at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:290)

	at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:877)

	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:851)

	... 40 more