SQL源头的相关内容

文章 2024-07-17 来自：开发者社区

DataWorks产品使用合集之数据集成时源头提供数据库自定义函数调用返回数据，数据源端是否可以写自定义SQL实现

问题一：dataworks场景：依赖的节点已经实际跑数成功。但是显示未运行，导致依赖的下游部分节点未跑批？ dataworks场景：依赖的节点已经实际跑数成功。但是显示未运行，导致依赖的下游部分节点未跑批？参考回答：这种情况可能是由于以下原因导致的：依赖的节点运行时间过长，超过了下游节点的等待时间。在这种情况下，下游节点会认为...

问答 2024-01-03 来自：开发者社区

PolarDB中慢SQL造成CPU升高造成更多慢SQL出现。如何定位慢SQL造成CPU升高的源头？

PolarDB中慢SQL造成CPU升高造成更多慢SQL出现。如何定位慢SQL造成CPU升高的源头?

文章 2022-02-17 来自：开发者社区

为什么数据库有时候不能定位阻塞（Blocker）源头的SQL语句

原文:为什么数据库有时候不能定位阻塞（Blocker）源头的SQL语句在SQL Server数据库或OACLE数据库当中，通常一个会话持有某个资源的锁，而另一个会话在请求这个资源，就会出现阻塞（blocking）。这是DBA经常会遇到的情况。当出现SQL语句的阻塞时，很多人想查看阻塞的源头（哪个SQL语句阻塞了哪个SQL），这样方便直观、简洁明了的定位问题。...

文章 2022-02-16 来自：开发者社区

通过Oracle补充日志，找到锁阻塞源头的SQL

转： http://www.itnose.net/detail/6440069.html 问题背景：有时会考虑一件事情，如果在Oracle环境下出现了锁阻塞的情况，如何定位到SQL源头（通过session、lock、transaction等视图仅能定位到会话）？或许有人会想有没有可能通过AWR相关的数据库性能...

文章 2022-02-16 来自：开发者社区

为什么数据库有时候不能定位阻塞（Blocker）源头的SQL语句

在SQL Server数据库或OACLE数据库当中，通常一个会话持有某个资源的锁，而另一个会话在请求这个资源，就会出现阻塞（blocking）。这是DBA经常会遇到的情况。当出现SQL语句的阻塞时，很多人想查看阻塞的源头（哪个SQL语句阻塞了哪个SQL），这样方便直观、简洁明了的定位问题。但是很多时候，很多场景，我们通过SQL语句并不能或者说不容易定位到阻塞者...

文章 2022-02-15 来自：开发者社区

简单几招捕获Oracle递归SQL调用源头

作者介绍蒋健，云趣网络科技联合创始人，11g OCM，多年Oracle设计、管理及实施经验，精通数据库优化，Oracle CBO及并行原理，曾为多个行业的客户的 Oracle 系统实施小型机到 X86跨平台迁移和数据库优化服务。云趣鹰眼监控核心设计和开发者，资深Python Web开发者。一、概述通常，DBA 确定通过 Oracle 的顶级活动会话图确定...

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更新时间 2024-07-24 13:39:46

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