[ERROR] [MY-012263]

You cannot increase the size of an existing system tablespace data file by changing its size attribute. For example, changing the innodb_data_file_path setting from ibdata1:10M:autoextend to ibdata1:12M:autoextend produces the following error when starting the server: 報錯信息如下： [ERROR] [MY-012263] [InnoDB] The Auto-extending innodb_system data file './ibdata1' is of a different size 640 pages (rounded down to MB) than specified in the .cnf file: initial 768 pages, max 0 (relevant if non-zero) pages! The error indicates that the existing data file size (expressed in InnoDB pages) is different from the size specified in the configuration file. If you encounter this error, restore the previous innodb_data_file_path setting, and refer to the system tablespace resizing instructions. 默認參數如下： innodb_data_file_path=ibdata1:12M:autoextend 想直接resize系統表空間，如下調整會直接報錯。 innodb_data_file_path=ibdata1:100M:autoextend 查看官方文檔 https://dev.mysql.com/doc/refman/8.0/en/innodb-system-tablespace.html