.NET中访问Oracle数据库链接:ORA-02041: client database did not begin a transaction 问题的处理. .NET中访问Oracle中带有DB_LINK时对象时,会抛出一下异常 ORA-02041: client database did not begin a transaction   解决方案: 1. To resolve the issue with Oracle's ODP.NET, you'd specify "enlist=f…

Today, organizations stores information(data) in different database systems. Each database system has a set of applications that run against it. This data is just bits and bytes on a file system - and only a database can turn the bits and bytes of da…

文章出处:  http://www.informit.com/articles/article.aspx?p=24094 In the preceding two chapters, I discussed dbExpress—a unidirectional database technology. In the real world, most applications support bidirectional scrolling through a dataset. As noted p…

Development Considerations in Windows Azure SQL Database 3 out of 5 rated this helpful - Rate this topic Developing applications for Microsoft Windows Azure SQL Database is very similar to developing applications for SQL Server. This topic describes…

ORA-00910: 指定した長さがデータ型に対して長すぎます 原因: データ型CHARまたはRAWに対して指定した長さは.2000を超える値または4000を超える値であるため無効です. 処置: 指定した長さの値を減らしてください.あるいは.指定した長さを有効にするためにデータ型をVARCHAR2.LONG CHARまたはLONG RAWに変更してください. ORA-00911: 文字が無効です. 原因: 識別子の最初の文字に.英数字以外のASCII文字を指定することはできません.「$」.「#」…

BEGIN TRANSACTION 标记一个显式本地事务的起始点. BEGIN TRANSACTION 使 @@TRANCOUNT 按 1 递增. BEGIN TRANSACTION 代表一点,由连接引用的数据在该点逻辑和物理上都一致的. 如果遇上错误,在 BEGIN TRANSACTION 之后的所有数据改动都能进行回滚,以将数据返回到已知的一致状态. 每个事务继续执行直到它无误地完成并且用 COMMIT TRANSACTION 对数据库作永久的改动,或者遇上错误并且用 ROLLBACK TR…

From: https://support.oracle.com What is "Oracle JavaVM Component Database PSU" ? Oracle JavaVM Component Database PSU is released as part of the Critical Patch Update program from October 2014 onwards.It consists of two separate patches: One fo…

Oracle Standby Database 实现方案  From: http://wanow.blog.hexun.com/4672755_d.html 字号:大 中 小 版本:V20060328.01.01 Standby Database的工作原理 1. Oracle 与 High Availability, Disaster Recovery 及 Data Duplicate 相关功能的产品概述 Oracle 的 High Availability 功能,Oracle 是从下面几个方面…

Using Active Database Duplication to Create Cross Platform Data Guard Setup (Windows/Linux) (Doc ID 881421.1) APPLIES TO: Oracle Database Cloud Exadata Service - Version N/A and laterOracle Database Cloud Service - Version N/A and laterOracle Databas…

Database https://en.wikipedia.org/wiki/Database A database is an organized collection of data.[1] A relational database, more restrictively, is a collection of schemas, tables, queries, reports, views, and other elements. Database designers typically…