<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>AWR on Greatfinish Blog</title><link>https://greatfinish.top/tags/awr/</link><description>Recent content in AWR 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>Sat, 20 Dec 2025 21:30:00 +0800</lastBuildDate><atom:link href="https://greatfinish.top/tags/awr/index.xml" rel="self" type="application/rss+xml"/><item><title>Oracle SQL Tuning Advisor 实战：从 AWR 定位慢 SQL 到索引优化落地</title><link>https://greatfinish.top/posts/oracle-sql-tuning-advisor-sta-case/</link><pubDate>Sat, 20 Dec 2025 21:30:00 +0800</pubDate><guid>https://greatfinish.top/posts/oracle-sql-tuning-advisor-sta-case/</guid><description>一次 Oracle SQL 优化实战：AWR 定位 SQL_ID f6asas4cp2n53，SQL Monitor 显示执行约 27 秒且 User I/O 等待明显，SQL Tuning Advisor 建议 SQL Profile 和复合索引，最终创建 UI_SALES_INVOICES(IOTYPE,CSTID) 索引后性能降至约 5 秒。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://greatfinish.top/posts/oracle-sql-tuning-advisor-sta-case/featured.jpg"/></item><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>