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:
报错信息如下：
[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.
默认参数如下：
innodb_data_file_path=ibdata1:12M:autoextend
想直接resize系统表空间，如下调整会直接报错。
innodb_data_file_path=ibdata1:100M:autoextend
查看官方文档
https://dev.mysql.com/doc/refman/8.0/en/innodb-system-tablespace.html
【声明】：本博客不参与任何交易，也非中介，仅记录个人感兴趣的主机测评结果和优惠活动，内容均不作直接、间接、法定、约定的保证。访问本博客请务必遵守有关互联网的相关法律、规定与规则。一旦您访问本博客，即表示您已经知晓并接受了此声明通告。
