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Full Name
Chengda Zhang
Full Name
ACE Associate
Top Level Details
Job Role
DBA
Company
Beijing TENSEN Technology Co., Ltd.
Country
China, People's Republic of
Top Expertise
Database
Focus Area
Database
About Chengda
Chengda Zhang has worked as a senior DBA, department manager, and project manager in a third-party maintenance company, and has more than 10 years of experience in database maintenance. The service targets include large operators, large financial institutions, government agencies, medical institutions, etc., and have rich experience in these industries. He is good at database fault diagnosis and processing, large database migration, performance tuning, disaster recovery, BBED, etc. He is certified in Oracle 11g OCP, 19c OCP, 12c OCM, and MySQL OCP, and is a CSDN columnist. His blog is https://blog.csdn.net/DBDeep?spm=1000.2115.3001.5343
Expertises
Database
MySQL Database
Real Applications Clusters (RAC)
Upgrade / Migration
Cloud Customer Connect
https://community.oracle.com/hub/profile/discussions/User_TBSUT
Links
Latest Contributions
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某金融客户核心业务系统SQL优化案例（一）
Mar 16, 2026 - Blog post -
Database
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Oracle Undo Tablespace 使用率暴涨案例分析
Aug 17, 2025 - Blog post -
Database
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Oracle查看历史会话信息视图介绍
Aug 17, 2025 - Blog post -
Database
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一起Oracle 19c bug 导致的业务系统超时问题分析
Aug 17, 2025 - Blog post -
Database
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