项目中集成activiti，在win7下面测试的很好，但是部署到linux环境下面就出现问题了：

重要的部分：

ERROR 2013-11-20 13:37:35 [CommandContext:close] - Error while closing command contextorg.apache.ibatis.exceptions.PersistenceException: ### Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`fangdo`.`ACT_RU_IDENTITYLINK`, CONSTRAINT `ACT_FK_IDL_PROCINST` FOREIGN KEY (`PROC_INST_ID_`) REFERENCES `ACT_RU_EXECUTION` (`ID_`))### The error may involve org.activiti.engine.impl.persistence.entity.ExecutionEntity.deleteExecution-Inline### The error occurred while setting parameters### SQL: delete from ACT_RU_EXECUTION where ID_ = ? and REV_ = ?### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`fangdo`.`ACT_RU_IDENTITYLINK`, CONSTRAINT `ACT_FK_IDL_PROCINST` FOREIGN KEY (`PROC_INST_ID_`) REFERENCES `ACT_RU_EXECUTION` (`ID_`))

Map
    
      variables =new HashMap
     
      ();			variables.put("pass", Boolean.parseBoolean(pass));			variables.put("backReason", backReason);taskService.claim(taskId, '123456');			taskService.complete(taskId, variables);
     
    

原因：删除ACT_RU_EXECUTION中的内容的时候，ACT_RU_IDENTITYLINK还有外键引用此表。

这个错误很明显但是怎么出现的这个错误呢？

全部错误信息：

ERROR 2013-11-20 13:37:35 [CommandContext:close] - Error while closing command contextorg.apache.ibatis.exceptions.PersistenceException: ### Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`fangdo`.`ACT_RU_IDENTITYLINK`, CONSTRAINT `ACT_FK_IDL_PROCINST` FOREIGN KEY (`PROC_INST_ID_`) REFERENCES `ACT_RU_EXECUTION` (`ID_`))### The error may involve org.activiti.engine.impl.persistence.entity.ExecutionEntity.deleteExecution-Inline### The error occurred while setting parameters### SQL: delete from ACT_RU_EXECUTION where ID_ = ? and REV_ = ?### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`fangdo`.`ACT_RU_IDENTITYLINK`, CONSTRAINT `ACT_FK_IDL_PROCINST` FOREIGN KEY (`PROC_INST_ID_`) REFERENCES `ACT_RU_EXECUTION` (`ID_`))at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:147)at org.apache.ibatis.session.defaults.DefaultSqlSession.delete(DefaultSqlSession.java:158)at org.activiti.engine.impl.db.DbSqlSession$DeletePersistentObjectOperation.execute(DbSqlSession.java:237)at org.activiti.engine.impl.db.DbSqlSession.flushDeletes(DbSqlSession.java:668)at org.activiti.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:462)at org.activiti.engine.impl.interceptor.CommandContext.flushSessions(CommandContext.java:168)at org.activiti.engine.impl.interceptor.CommandContext.close(CommandContext.java:115)at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:70)at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)at org.activiti.engine.impl.TaskServiceImpl.complete(TaskServiceImpl.java:163)at com.fangdo.action.CrmApprovalAction.complete(CrmApprovalAction.java:127)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(Method.java:597)at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)at com.fangdo.action.interceptor.CustomerInterceptor.intercept(CustomerInterceptor.java:30)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.fangdo.core.db.DBInterceptor.intercept(DBInterceptor.java:20)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:161)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)at com.google.inject.struts2.GuiceObjectFactory$ProvidedInterceptor.intercept(GuiceObjectFactory.java:224)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:563)at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at com.fangdo.core.UserAuthFilter.doFilter(UserAuthFilter.java:49)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at com.fangdo.core.GlobalFilter.doFilter(GlobalFilter.java:59)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at com.fangdo.core.URLFilter.doFilter(URLFilter.java:91)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)at java.lang.Thread.run(Thread.java:662)Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`fangdo`.`ACT_RU_IDENTITYLINK`, CONSTRAINT `ACT_FK_IDL_PROCINST` FOREIGN KEY (`PROC_INST_ID_`) REFERENCES `ACT_RU_EXECUTION` (`ID_`))at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)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:1039)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4096)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4028)at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2683)at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2144)at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1379)at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.execute(NewProxyPreparedStatement.java:989)at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:41)at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:66)at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:45)at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:108)at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:75)at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:145)... 108 more