我在update数据库的时候出现的死锁 数据库表死锁 Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction 这是在网上看到的文章:: 由于InnoDB预设是Row-Level Lock,所以只有「明确」的指定主键,MySQL才会执行Row lock (只锁住被选取…

本文为博主原创: 以下为在程序运行过程中报的错误, org.springframework.dao.CannotAcquireLockException: ### Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Lock wait timeout exceeded; try restarting transaction### The error…

1.生产环境出现以下报错 该错误发生在update操作中,该表并未建立索引,也就是只有InnoDB默认的主键索引,发生错误的程序是for循环中update. 什么情况下会出现Deadlock found when trying to get lock? https://dev.mysql.com/doc/refman/5.6/en/innodb-deadlocks.html 出现死锁需要两个条件: 1)至少2个客户端(a,b)同时在执行事务 2)客户端a锁定了某一行,未提交事务,此时客户端b也需…

有两种设置方法 第一种在mysql的配置文件中加入,然后重启mysql innodb_lock_wait_timeout = 500 第二种直接执行如下命令 set global innodb_lock_wait_timeout=500; 然后重启mycat和后台微服务,然后观察是否还有这个报错 如果怀疑,MYSQL出现死锁,首先查询information_schema.innodb_trx表,查看哪些mysql查询线程ID导致的,但是我查了没有一直存在的死锁线程,一般都是锁几秒就消失了 如下是…

1.错误描述 [ERROR:]2015-06-09 16:56:19,481 [抄送失败] org.hibernate.exception.LockAcquisitionException: error executing work at org.hibernate.dialect.MySQLDialect$1.convert(MySQLDialect.java:451) at org.hibernate.exception.internal.StandardSQLExceptionConver…

严重: Servlet.service() for servlet jsp threw exceptioncom.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column '??????' in 'field list'    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)    at sun.reflect.Nati…

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 -> nu…

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,…

严重: Servlet.service() for servlet jsp threw exceptioncom.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '88888888' for key 'PRIMARY'    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) …

1.错误描写叙述 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 -> 100…

1.错误描述 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxError Exception:You have an error in your SQL syntax check the manual that corresponds to your MySQL server version for the right syntax to use near 'notnull,user_name varchar(255) )' at line 1 2.错误原因…

1 详细异常 2019-10-11 10:33:55,865 INFO main:com.cloudera.server.cmf.Main: ================================================================================ 2019-10-11 10:33:55,884 INFO main:com.cloudera.server.cmf.Main: Starting SCM Server. JVM Args: [-D…

### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3; bad SQL grammar []; nested excep…

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'kaihu.t_client_info' doesn't exist 有两个model,使用第一个dao的时候可以自动创建表 但是使用第二个model的时候不能,会报错 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'kaihu.t_client_info' doesn't exis…

Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(3), primary key (ID_))…

不多说,直接上干货! 问题详情 [hadoop@bigdatamaster oozie--cdh5.5.4]$ bin/ooziedb.sh create -sqlfile oozie.sql -run DB Connection [hadoop@bigdatamaster oozie--cdh5.5.4]$ bin/ooziedb.sh create -sqlfile oozie.sql -run DB Connection setting CATALINA_OPTS="$CATALINA_O…

编写第一个Hibernate程序的时候,就发现出现了错误 Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not insert: [zhongfucheng.domain.User] at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92) at org.hibernate.ex…

1 错误描写叙述 at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandler…

1.错误原因 [ERROR:]2015-04-18 13:20:31,883 [异常拦截] com.skycloud.oa.exception.ExceptionHandler org.hibernate.exception.SQLGrammarException: error executing work at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.j…

1.错误描述 org.hibernate.exception.SQLGrammarException: error executing work at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(…

今天遇到图片中的错误,纠结了一下,弄清楚了怎么从控制台中读取错误信息,并修改错误. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''d_id'=d.'dept…

数据库 没有开启  连接失败 org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseco…

### Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 ### The…

一.异常信息 org.springframework.jdbc.BadSqlGrammarException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'daotable.…

前段时间,接手一个项目使用的是原始的jdbc作为数据库的访问,发布到服务器上在运行了一段时间之后总是会出现无法访问的情况,登录到服务器,查看tomcat日志发现总是报如下的错误. Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too man…

先说结论: 因为在表设计中有一个商品描述字段被设置为desc,但desc是mysql中的关键字,如select id,name,desc,price from product;这条sql语句在查询时的sql语句解析会和期望的不一样,导致出现问题.因为平时在写java代码的时候很自然的会将描述变量设置为desc,在设计表字段时也没有多想,忘记和忽略了desc为mysql中的关键字,酿成此问题. 排查思路: 一开始怀疑是因为sql过长,删了一部分,成功了,加上又失败了,而且一直提示在price那里只…

存储过程如下: dao层的sql Controller层调用: html页面 没有使用pagehelper分页之前,可以正常使用 使用了pagehelper之后就报错 ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds…

tomcat+mysql部署,每天早晨第一次访问web项目,出现mysql的连接timeout异常:com.mysql.jdbc.exceptions.jdbc4.CommunicationsException或com.atomikos.datasource.ResourceException. ############################################################################ com.atomikos.datasource.…

严重: Servlet.service() for servlet [spring-mvc] in context with path [/learn] threw exception [Request processing failed; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement] with root causecom.mysql.j…

今天在练习hive的操作时,在创建数据表时,遇到了异常 FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:javax.jdo.JDODataStoreException: An exception was thrown while adding/validating class(es) : Specified key was too l…