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Full Name
Yunhua Shi
Full Name
ACE Pro
Top Level Details
Job Role
Architect
Company
Beijing HT Horizon Technology
Country
China, People's Republic of
Top Expertise
Exadata
Focus Area
Database
About Yunhua
Shi Yunhua , is graduated from Xi'an Jiaotong University in 2005, then has been working on the third-party company for maintenance service of Oracle database, Now is a member of the Oracle Exadata expert group. Have a wealth of experience in Engineered Systems, like as Exadata 、ODA and so on, has published two books <Exadata Implementation and Maintenance Guide> and <Exadata performance tuning>. WeChat ID: 15153132360
Expertises
Exadata
Oracle Database (EE)
Home Page
https://www.cnblogs.com/missyou-shiyh/
Oracle Community
https://community.oracle.com/tech/developers/profile/Shi%20Yunhua
Links
Latest Contributions
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SYSAUX表空间中的SYS.EXP_HEAD$表，占用大量空间
Jan 22, 2026 - Blog post -
Oracle Database (EE)
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PX并行进程产生大量的trace日志，导致文件系统撑爆
Jan 08, 2026 - Blog post -
Oracle Database (EE)
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回收站存在大量对象，导致Insert into...select语句夯住
Dec 31, 2025 - Blog post -
Oracle Database (EE)
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用dg broker执行switchover时，报0RA-01017
Dec 23, 2025 - Blog post -
Oracle Database (EE)
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增量备份恢复的方式修改缺失归档的DataGuard
Dec 02, 2025 - Blog post -
Oracle Database (EE)
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未设置min_free_kbytes参数，导致操作系统进行页缓存回收时，整个操作系统夯住
Nov 19, 2025 - Blog post -
Oracle Database (EE)
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Exadata数据库性能异常，备份进程卡住
Oct 24, 2025 - Blog post -
Exadata
Oracle Database (EE)
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MySQL 5.7版本，搭建一个两主一从的多源主从复制环境
Oct 12, 2025 - Blog post -
MySQL Database
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恢复某个数据文件不适当，导致DataGuard无法open数据库
Sep 23, 2025 - Blog post -
Oracle Database (EE)
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Exadata计算节点的内存出现故障，导致CPU耗尽
Sep 09, 2025 - Blog post -
Exadata
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Bug 34885986 - Flashback log file was not reused even if db_flashback_retention_target is passed
Aug 08, 2025 - Blog post -
Oracle Database (EE)
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Exadata X8及以上机型，请关注EX80缺陷（bug 35241309）
Aug 06, 2025 - Blog post -
Exadata
Oracle Database (EE)
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启动数据库实例，报ORA-01606 parameter not identical to that of another mounted instance错误
Jul 22, 2025 - Blog post -
Oracle Database (EE)
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sqlplus / as sysdba 连接数据库报错：ORA-12547: TNS:lost contact
Jul 17, 2025 - Blog post -
Oracle Database (EE)
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部署InnoDB Cluster
Jul 16, 2025 - Blog post -
MySQL 8
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