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[SQL] - Attempted to read or write protected memory. This is often an indication that other memory is corrupt. 问题之解决

时间:2017-06-28 00:22:32      阅读:293      评论:0      收藏:0      [点我收藏+]

标签:hresult   别名   svi   语法   cat   res   images   数据   adapter   

场景:

使用 Oracle.DataAccess.dll 访问数据库时,OracleDataAdapter 执行失败。

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异常:

System.AccessViolationException was unhandled
  HResult=-2147467261
  Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
  Source=Oracle.DataAccess

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分析:

有问题的SQL
select distinct username from user u, role r where u.roleid = r.id and u.id = 1

正确的SQL
select distinct u.username from user u, role r where u.roleid = r.id and u.id = 1

总结:

规范使用 SQL 语法,指定表别名进行联合查询。

[SQL] - Attempted to read or write protected memory. This is often an indication that other memory is corrupt. 问题之解决

标签:hresult   别名   svi   语法   cat   res   images   数据   adapter   

原文地址:http://www.cnblogs.com/jinzesudawei/p/7087774.html

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