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Jackle AL is an experienced Senior Database Manager at China Mobile Hong Kong, with expertise in infrastructure enhancement, database performance tuning, and cross-platform migration across various database systems including Oracle RAC, MySQL, PostgreSQL, MongoDB, MSSQL, and Teradata since December 2017. Prior to this role, Jackle served as a Senior System Specialist at PCCW Solutions Limited, focusing on database migration and upgrade for over 30 terabytes, along with supporting mission-critical applications such as OLTP and Oracle EBS from January 2012 to December 2017. Earlier experience includes positions as Project Manager and Senior Database Administrator at HiSoftware, where Jackle specialized in banking core system performance and PL/SQL design, and as a Senior Database Administrator at Mangocity.com Limited, with responsibility for database design and maintenance. Jackle holds a bachelor's degree in Information Technology from Hunan University.