1、错误描述

INFO:2015-05-01 14:20:44[main] - Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge15w993x6lhz1bnfznl|50709dfa, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge15w993x6lhz1bnfznl|50709dfa, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://127.0.0.1:3306/smvch, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 600, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 50, maxStatements -> 100, maxStatementsPerConnection -> 0, minPoolSize -> 2, numHelperThreads -> 10, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, userOverrides -> {}, usesTraditionalReflectiveProxies -> false ]
WARN:2015-05-01 14:21:16[C3P0PooledConnectionPoolManager[identityToken->1hge15w993x6lhz1bnfznl|50709dfa]-HelperThread-#8] - com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@6148682a -- 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). Last acquisition attempt exception:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'smvch'
	at sun.reflect.GeneratedConstructorAccessor10.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
	at com.mysql.jdbc.Util.getInstance(Util.java:360)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:978)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:870)
	at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1659)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1206)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2234)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2265)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2064)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:790)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:44)
	at sun.reflect.GeneratedConstructorAccessor11.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:395)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:146)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:195)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:184)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1086)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:44)
	at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1810)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
WARN:2015-05-01 14:21:16[C3P0PooledConnectionPoolManager[identityToken->1hge15w993x6lhz1bnfznl|50709dfa]-HelperThread-#8] - Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@bba4336 is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
WARN:2015-05-01 14:21:16[main] - Caught exception while allowing TestExecutionListener [org.springframework.test.context.transaction.TransactionalTestExecutionListener@12fc438b] to process 'before' execution of test method [public void com.yhd.test.dao.StudentDaoTest.testConfig()] for test instance [com.yhd.test.dao.StudentDaoTest@3940512c]
org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!
	at org.springframework.jdbc.datasource.DataSourceTransactionManager.doBegin(DataSourceTransactionManager.java:242)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)
	at org.springframework.test.context.transaction.TransactionContext.startTransaction(TransactionContext.java:97)
	at org.springframework.test.context.transaction.TransactionalTestExecutionListener.beforeTestMethod(TransactionalTestExecutionListener.java:199)
	at org.springframework.test.context.TestContextManager.beforeTestMethod(TestContextManager.java:249)
	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:71)
	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:81)
	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:216)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:82)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:60)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:67)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:162)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database!
	at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:118)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:689)
	at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)
	at org.springframework.jdbc.datasource.DataSourceTransactionManager.doBegin(DataSourceTransactionManager.java:204)
	... 25 more
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
	at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1418)
	at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:606)
	at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:526)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutAndMarkConnectionInUse(C3P0PooledConnectionPool.java:755)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:682)
	... 27 more
WARN:2015-05-01 14:21:16[C3P0PooledConnectionPoolManager[identityToken->1hge15w993x6lhz1bnfznl|50709dfa]-HelperThread-#8] - com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@196a75c0 -- 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). Last acquisition attempt exception:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'smvch'
	at sun.reflect.GeneratedConstructorAccessor10.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
	at com.mysql.jdbc.Util.getInstance(Util.java:360)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:978)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:870)
	at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1659)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1206)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2234)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2265)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2064)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:790)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:44)
	at sun.reflect.GeneratedConstructorAccessor11.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:395)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:146)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:195)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:184)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1086)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:44)
	at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1810)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
WARN:2015-05-01 14:21:16[C3P0PooledConnectionPoolManager[identityToken->1hge15w993x6lhz1bnfznl|50709dfa]-HelperThread-#8] - Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@bba4336 is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
INFO:2015-05-01 14:21:16[Thread-2] - Closing org.springframework.context.support.GenericApplicationContext@682be886: startup date [Fri May 01 14:20:42 CST 2015]; root of context hierarchy
INFO:2015-05-01 14:21:16[Thread-2] - HHH000030: Cleaning up connection pool [jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1;MVCC=TRUE]

2、错误原因

3、解决办法

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'smvch'的更多相关文章

  1. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'user'

    1.错误描述 2014-7-12 21:06:05 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager 信息: I ...

  2. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'test'

    com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'test' 报错原因是:MySQL数据库没有 ...

  3. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database &#39;user&#39;

    1.错误描写叙述 2014-7-12 21:06:05 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager 信息: ...

  4. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'db_item'

    一直很奇怪,为什么报错,进入mysql命令行,show databases:发现多谢了一个空格,如上图.

  5. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown error 1146

    问题介绍:   com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown error 1146 MySql语法错误, 但是错 ...

  6. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'p.knowlege_part_id' in 'field list'

    MyBatis中,出现Unknown column的提示是mapper.xml中的数据库字段写错了. 错误示例: XxMapper.xml中 <sql id="KnowlegeSect ...

  7. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'dd' in 'where clause'

    今天在使用mysql数据库查找数据的时候报错,错误信息如下: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown co ...

  8. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column '??????' in 'field list'

    严重: Servlet.service() for servlet jsp threw exceptioncom.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErro ...

  9. Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 't.statis_date'

    1.错误原因 [ERROR:]2015-04-18 13:20:31,883 [异常拦截] com.skycloud.oa.exception.ExceptionHandler org.hiberna ...

随机推荐

  1. python各种运算优先级一览表

    ##python各种运算的优先级 运算符 描述 lambda Lambda表达式 or 布尔"或" and 布尔"与" not x 布尔"非" ...

  2. UVW源码漫谈（三）

    咱们继续看uvw的源码,这次看的东西比较多,去除底层的一些东西,很多代码都是连贯的,耦合度也比较高了.主要包括下面几个文件的代码: underlying_type.hpp resource.hpp l ...

  3. 转载-Oracle ORACLE的sign函数和DECODE函数

    原文地址:http://www.cnblogs.com/BetterWF/archive/2012/06/12/2545829.html 转载以备用 比较大小函数 sign 函数语法:sign(n) ...

  4. Eclipse去掉对JS文件的Validation

    Eclipse不去掉对JS文件的Validation,编译时会花费很长的时间,有时甚至会导致编译失败. 可以按照如下的方式去掉对JS文件的Validation. 一.window->prefer ...

  5. Linux tail,cat,head命令

    tail命令用于将文件的最后部分输出到标准设备,通常是终端,也可以支持更新操作,当文档内容发生变化时,tail会自己主动刷新,确保你看到最新的档案内容. 1.tail -f filename 监视fi ...

  6. BZOJ 2388: 旅行规划 [分块 凸包 等差数列]

    传送门 题意: 区间加和询问一段区间内整体前缀和的最大值 刚才还在想做完这道题做一道区间加等差数列结果发现这道就是.... 唯一的不同在于前缀和一段区间加上等差数列后,区间后面也要加上一个常数!!! ...

  7. 关于@Override

    首先,来了解一下“重载”和“覆写”的区别: 重载: (1)方法重载是让类以统一的方式处理不同类型数据的一种手段.多个同名函数同时存在,具有不同的参数个数/类型.重载Overloading是一个类中多态 ...

  8. React项目模板-从项目搭建到部署

    前一段时间做了一个小项目,时间比较紧,就一个人月.最终希望能够通过微信公众号链接启动应用. 项目的业务细节就不多说了,主要是想分享一下做这个项目技术方面的一些经验. 技术选型 参考范围大致三种:Ang ...

  9. CentOS利用Nginx+Docker部署.netcore应用

    安装docker 官方文档https://docs.docker.com/engine/installation/linux/docker-ce/centos/ [root@sn ~]# yum re ...

  10. Shell脚本的颜色样式及属性控制

    首先看一下格式 echo -e "\033[字背景颜色:文字颜色m字符串\033[0m" 举例 echo -e "\033[41;36m 字体 \033[0m" ...