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Full Name
Yushan Bai
Full Name
ACE Pro
Top Level Details
Job Role
DBA
Company
Hangzhou Daiwei Technology Co., Ltd.
Country
China, People's Republic of
Top Expertise
Database
Focus Area
Database
About Yushan
He focuses on Oracle database management and maintenance,troubleshooting,RAC cluster technology, performance tuning services based on OWI/Time Model/SQL,Oracle database cross-platform upgrade and migration, etc. His blog (http://blog.csdn.net/q947817003，New url:https://yushan-bai.blog.csdn.net) has more 560 articles and a total traffic of more than 1.7 million, helped many people solve database problems. He lives in a beautiful city: Hangzhou。
Expertises
Database
Oracle Active Data Guard
Real Applications Clusters (RAC)
MySQL
Home Page
https://yushan-bai.blog.csdn.net
Oracle Community
https://community.oracle.com/tech/developers/profile/Yushan%20Bai
Links
Latest Contributions
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通过oracle 自动优化任务dbms_sqltune进行SQL优化的实战
Apr 21, 2026 - Blog post -
Oracle PL/SQL
Oracle Database (EE)
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ORACLE报错ORA-04030 koh-kghu sessi,pmucalm coll的分析处理步骤
Apr 21, 2026 - Blog post -
Oracle Database (EE)
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ORACLE数据库在进行DROP TABLE时失败报错ORA-00604问题的分析处理
Apr 11, 2026 - Blog post -
Oracle Database (EE)
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ORALCE LOB字段读取报错ORA-00600: 25027和ORA-01555问题的分析处理
Apr 10, 2026 - Blog post -
Oracle RAC
Oracle Database (EE)
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windows环境oracle 11.2.0.1版本数据库启动报错ORA-01589问题的处理
Apr 08, 2026 - Blog post -
Oracle Database (EE)
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ORACLE RAC环境的row cache lock等待与Sequences CACHE问题分析
Apr 07, 2026 - Blog post -
Performance
Database
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一次ORACLE RAC的gipc进程的网卡状态异常问题的排查
Apr 07, 2026 - Blog post -
Oracle RAC
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ORACLE数据库无法查询到V$SESSION的BLOCKSESSION列问题的分析
Apr 04, 2026 - Blog post -
Performance
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ORACLE EXADATA的CPU P1 主核心cores 瞬间临时无法被固件注册MCA控制器引起的重启问题分析
Apr 03, 2026 - Blog post -
Exadata
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RAC环境数据库节点异常重启问题的分析(存储光纤信号问题)
Apr 02, 2026 - Blog post -
Oracle RAC
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hpux环境的ORACLE数据库遭遇ASM实例进程报错ORA-07445 [__lwp_kill()+48 引起数据库重启
Mar 30, 2026 - Blog post -
Oracle RAC
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hpux机器上的RAC环境数据文件读取异常导致实例重启
Mar 30, 2026 - Blog post -
Oracle RAC
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HP-UX平台Oracle启动实例遭遇ORA-27300/ORA-27301/ORA-27302报错
Mar 30, 2026 - Blog post -
Oracle RAC
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一次奇怪的ORA-01950: no privileges on tablespace问题分析
Mar 04, 2026 - Blog post -
Database
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ORA-00600: internal error code, arguments: [kdxlin: sno out of range]问题处理
Oct 16, 2025 - Blog post -
Database Administrator (DBA)
Active Data Guard (ADG)
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