<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>归档日志 on Greatfinish Blog</title><link>https://greatfinish.top/tags/%E5%BD%92%E6%A1%A3%E6%97%A5%E5%BF%97/</link><description>Recent content in 归档日志 on Greatfinish Blog</description><generator>Hugo -- gohugo.io</generator><language>zh-cn</language><copyright>© 2026 Greatfinish Blog · [沪ICP备2026022892号](https://beian.miit.gov.cn/)</copyright><lastBuildDate>Thu, 11 Dec 2025 21:30:00 +0800</lastBuildDate><atom:link href="https://greatfinish.top/tags/%E5%BD%92%E6%A1%A3%E6%97%A5%E5%BF%97/index.xml" rel="self" type="application/rss+xml"/><item><title>记一次 1000+ 每秒 UPDATE 引发的 Redo 风暴：AWR 定位 log file switch checkpoint incomplete</title><link>https://greatfinish.top/posts/oracle-redo-storm-log-file-switch-checkpoint-incomplete/</link><pubDate>Thu, 11 Dec 2025 21:30:00 +0800</pubDate><guid>https://greatfinish.top/posts/oracle-redo-storm-log-file-switch-checkpoint-incomplete/</guid><description>一次 Oracle Redo 风暴处理实战：生产库磁盘使用率超过 90%，日志切换从每小时十几次飙升到数百次，AWR 显示 log file switch checkpoint incomplete 占 DB time 约 41%，最终定位 SQL_ID 0vq0s6rm8fawn 每小时执行 376 万次，约 1000+ 次/秒 UPDATE。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://greatfinish.top/posts/oracle-redo-storm-log-file-switch-checkpoint-incomplete/featured.jpg"/></item></channel></rss>