VCD是一种ASCII码的文件,可以直接用gvim来打开.有两种格式:1)Four-state,  2) Extended, 相比较而言,Extended VCD会多一些strength的信息. VCD文件的产生,在initial的task中调用$dumpfile(file_name); $dumpvars(level, hierarchy1,hierarchy2); $dumpoff; $dumpon; $dumpall在VCD文件中创建checkpoint; $dumplimit(files…

使用sys as sysdba权限进行EXP/IMP与其它用户稍有不同,详细内容如下(摘自metalink) Applies to: Oracle Server - Enterprise Edition - Version: 8.1.7.0 to 10.2.0.0 Oracle Server - Personal Edition - Version: 8.1.7.0 to 10.2.0.0 Oracle Server - Standard Edition - Version: 8.1.7.0 t…

本文内容为转载,重新排版以供学习研究.如有侵权,请联系作者删除. 转载请注明本文出处:Professional C# 6 and .NET Core 1.0 - 37 ADO.NET ------------------------------- What's In This Chapter? Connecting to the database Executing commands Calling stored procedures The ADO.NET object model Wrox.…

本文内容为转载,供学习研究.如有侵权,请联系作者删除. 转载请注明本文出处:Professional C# 6 and .NET Core 1.0 - 37 ADO.NET 译文:C# 6 与 .NET Core 1.0 高级编程 - 37 章 ADO.NET ------------------------------- What’s In This Chapter? Connecting to the database Executing commands Calling stored pr…

Applies to: Oracle Server - Enterprise Edition - Version 11.1.0.6 to 11.2.0.4 [Release 11.1 to 11.2]Information in this document applies to any platform.GoalStep by step guide on how to create a physical standby database using RMAN DUPLICATE FROM ACT…

项目启动报错: [2016-07-13 10:04:15,074] ERROR org.apache.ibatis.executor.BaseExecutor Could not get a databaseId from dataSource java.sql.SQLException: Connections could not be acquired from the underlying database! at com.mchange.v2.sql.SqlUtils.toSQLExce…

编译通过并且运行web成功后,访问的页面不需要连接数据库,不牵扯到反射调用实体类就不会报错, 报错内容如下: [WARNING] org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exce…

问题: This is a part of my manifest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.asd" android:versionCode="118" a…

07-24 15:03:14.490 6291-6291/com.tongyan.nanjing.subway E/SQLiteDatabase: Failed to open database '/storage/emulated/0/TYSubway/structure/db/TYSubwayInspcetionNJ.db'. android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error(Sqlite code…

今天调试程序是遇到了,下面的一个问题.我将对应的SQL语句拿到Toad下也能正常的执行,感觉有点莫名其妙,根据异常信息的提示查看对应的映射结果集也没发现错误,然后百度了一下,也有许多朋友也遇到过这样的问题,原因大概有两个,一是:结果集中的字段含有对应的数据库产品的关键字,二是:在xml文件中的SQL语句中,两个填充变量间没有写逗号,我仔细分析自己的SQL语句,觉得有可能是第二种原因!where 1 = 1 order by ? ?占位符的方式传递参数是确实没有逗号,我将SQL语句中order b…