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Full Name
Ying Yifeng
Full Name
ACE Director
Top Level Details
Job Role
Developer
Company
Independent Consultant
Country
China, People's Republic of
Top Expertise
Cloud
Focus Area
Database
About Ying
Ying is specialized in the study of the internal principles, new features, wide-range applications and performance optimizations of Oracle. He has been keeping up with the emerging trends of new discoveries, paying close attention to related Oracle techniques and other knowledge, and actively participating in the discussions in various database-specialized forums. Therefore, he is assigned as the moderator of database sub-section in the Chinese biggest Oracle Technique Forum (www.itpub.net). Meanwhile, he regularly updates the blogs with his articles and findings related to Oracle, and his blogs are authenticated as Recommended Professional Blogs by the ITPub forum. The visitor volume so far has been more than a Million. Through this forum, Yifeng shares his experience and skills of Oracle, and organized several online multi-party conferences aimed at communicating, sharing and helping others solve problems met at work.
Expertises
Cloud
Autonomous Database
Home Page
http://blog.itpub.net/23732248/
Oracle Community
https://community.oracle.com/tech/developers/profile/Ying%20Yifeng
Links
Latest Contributions
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PDB 级 Data Guard 切换，CDB 字典那层窗户纸终于被捅破了
Apr 30, 2026 - Blog post -
Refreshable PDB switchover
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Oracle Redo 日志机制——从 LGWR 写盘到 Log File Sync 的完整链路
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle 分区表设计——范围分区、哈希分区与复合分区的性能边界
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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OceanBase 直连 Oracle DBLink
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle 内存管理——从 SGA 自动调整到 PGA 溢出的排查实录
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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JSON-Relational Duality——关系型与文档型的融合架构
Apr 30, 2026 - Blog post -
Machine Learning in Oracle Database
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Oracle AWR/ASH 实战——从等待事件到 SQL 调优的完整诊断链路
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle SQL 执行计划——成本模型、基数估算与 Hints 实战干预
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle 锁机制——从 TM 锁到死锁的完整链路
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle 归档日志管理——FRA 爆满、删除策略与空间保卫战
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle 并行执行（PX）——DOP 调优、Granule 分配与服务器争用治理
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle 统计信息——DBMS_STATS 深度定制、直方图陷阱与动态采样
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Oracle DataGuard 日志传输——LGWR SYNC/ASYNC、AFFIRM/NOAFFIRM 与网络延迟博弈
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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Exadata Smart Scan offload 率不到 60%，我扒了三天存储节点
Apr 30, 2026 - Blog post -
Exadata
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Oracle 会话管理与连接风暴——Dedicated、Shared Server 与 DRCP
Apr 30, 2026 - Blog post -
Oracle Database (EE)
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