Lei has more than 6 years experience in database area, including Oracle Database, MySOL and Other database. Focused on Oracle Database technology for over 6 years, maintained multiple Oracle Databases across multiple versions for multiplecustomers, expertise in administration, performance tunning,troubleshooting, Rac, Data Guard, backup and recovery, and so on.

Oracle Database 12c Administrator Certified Professional
Oracle Database 11g Administrator Certified Master