1、错误描述

2014-7-12 21:06:05 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager
信息: 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 -> x3reqp93bublw71xo3ley|1e1225d, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> x3reqp93bublw71xo3ley|1e1225d, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localhost:3306/user, 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 ]
2014-7-12 21:06:37 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask run
警告: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@10f7612 -- 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 'user'
	at sun.reflect.GeneratedConstructorAccessor19.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.Util.getInstance(Util.java:386)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4187)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4119)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:927)
	at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4686)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1304)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
	at sun.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
	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$PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
2014-7-12 21:06:37 com.mchange.v2.resourcepool.BasicResourcePool forceKillAcquires
警告: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@6ccf3e is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
2014-7-12 21:06:37 org.hibernate.engine.jdbc.internal.JdbcServicesImpl configure
WARN: HHH000342: Could not obtain connection to query metadata : Connections could not be acquired from the underlying database!
2014-7-12 21:06:37 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask run
警告: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@1748ba4 -- 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 'user'
	at sun.reflect.GeneratedConstructorAccessor19.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.Util.getInstance(Util.java:386)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4187)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4119)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:927)
	at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4686)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1304)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
	at sun.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
	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$PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
2014-7-12 21:06:37 com.mchange.v2.resourcepool.BasicResourcePool forceKillAcquires
警告: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@6ccf3e is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
2014-7-12 21:06:37 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask run
警告: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@1bf8a41 -- 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 'user'
	at sun.reflect.GeneratedConstructorAccessor19.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.Util.getInstance(Util.java:386)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4187)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4119)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:927)
	at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4686)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1304)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
	at sun.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
	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)
2014-7-12 21:06:37 com.mchange.v2.resourcepool.BasicResourcePool forceKillAcquires
警告: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@6ccf3e is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
2014-7-12 21:06:37 org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect

2、错误原因

      由于MySQL数据库中没有创建user数据库，导致出错



3、解决办法

  

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

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

    1.错误描述 INFO:2015-05-01 14:20:44[main] - Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDat ...

  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. 4.ES核心慨念

    一. 和lucene的关系 lucene是最先进,功能最强大的搜索库.但是使用复杂(要深入理解其中原理. elasticsearch,基于lucene,隐藏复杂性,提供简单易用的restful api ...

  2. Linux 下编译安装xDebug命令速记

    下载xdebug-2.2.4.tgz软件链接: http://pan.baidu.com/s/1jGHYRMA #解压 xdebugtar -zxvf xdebug-2.2.4.tgz #进入xdeb ...

  3. UOJ 241. 【UR #16】破坏发射台 [矩阵乘法]

    UOJ 241. [UR #16]破坏发射台 题意:长度为 n 的环,每个点染色,有 m 种颜色,要求相邻相对不能同色,求方案数.(定义两个点相对为去掉这两个点后环能被分成相同大小的两段) 只想到一个 ...

  4. BZOJ 4766: 文艺计算姬 [矩阵树定理 快速乘]

    传送门 题意: 给定一个一边点数为n,另一边点数为m,共有n*m条边的带标号完全二分图$K_{n,m}$ 求生成树个数 1 <= n,m,p <= 10^18 显然不能暴力上矩阵树定理 看 ...

  5. JAVAEE——BOS物流项目05：OCUpload、POI、pinyin4J、重构分页代码、分区添加、combobox

    1 学习计划 1.实现区域导入功能 n OCUpload一键上传插件使用 n 将文件上传到Action n POI简介 n 使用POI解析Excel文件 n 完成数据库操作 n 使用pinyin4J生 ...

  6. ACE在windows下的编译及配置（VS2010）

    ACE在windows下的编译及配置(VS2010) 分类:             -[小西南]-              2013-08-06 16:17     2354人阅读     评论( ...

  7. [Python Study Notes]字符串操作

    字符串操作 a.字符串格式化输出 name = "liu" print "i am %s " % name     #输出: i am liu   PS: 字符 ...

  8. golang的GET请求(类似于PHP的CURL)

    check_url := "https://www.baidu.com" header := make(map[string]string) res, err := util.Hp ...

  9. openvpn 客户端一键脚本安装

    #!/bin/bash dir=/etc/openvpn#file=AD00012basepath=$(cd `dirname $0`; pwd)PACKAGE_DIR="${basepat ...

  10. ps色彩范围抠章

    1.在photoshop打开需要抠公章的图像文件2.使用椭圆形选区工具,ALT+SHIFT+鼠标左键,选择章的范围 2.CTRL+J,复制图层,得到图层1,隐藏背景 3.CTRL+L,调整色阶,拖动两 ...