My name is Xiaoqiang Xu, my net name is JiekeXu.I have six years of full-time DBA experience with Oracle, with hundreds of T-level data volume database operation and maintenance management experience in the financial industry. Author of Wechat public account "JiekeXu DBA Road", Oracle database enthusiast, Oracle OCP/OCM certified master, MySQL OCP certified expert,Mo Tianlun MVP.I write Oracle-related technical articles through technical community and Wechat public account all year round.In total, more than 200 articles have been published and read for 150w times on the whole network. In addition, I learn MySQL 8.0 MGR, Router, Shell, Oracle OGG and others.Personal Technology Blog Address: https://blog.csdn.net/JiekeXu