What is the default setting for innodb_data_file_path if it isn't specified in my.cnf?

innodb, mysql

Solution

I just learned about

show variables;

Which will show you the value of those configuration options, in my case it was

| innodb_data_file_path           | ibdata1:10M:autoextend      |

Problem

What is the default setting for innodb_data_file_path if it isn't specified in my.cnf? When I try to execute the following command on a 12GB table full of pictures ``` alter table `rails_production`.`pictures` change `data` `image_file_data` mediumblob NULL; ``` I get the following error ``` ERROR 1114 (HY000): The table '#sql-7fe4_12c9' is full ``` I read another StackOverflow question link text that suggested I change my setting to the following ``` innodb_data_file_path = ibdata1:10M:autoextend:max:512M ``` When I looked in my.cnf I noticed I didn't have any settings for innodb_data_file_path, I'm wondering what the default value is?

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