SET GLOBAL innodb_file_format = `Barracuda`; Warnings: Warning 131 Using innodb_file_format is deprecated and the parameter may be removed in future releases. See http://dev.mysql.com/doc/refman/5.7/en/innodb-file-format.html SET GLOBAL innodb_file_per_table = ON; create table t1(a blob) engine=innodb key_block_size=8; create function generate_blob() returns varchar(20000) begin declare x varchar(20000) default ''; declare i int default 500; while i > 0 do set x = concat(sha1(i), x); set i = i - 1; end while; return x; end // insert into t1 select generate_blob(); truncate t1; insert into t1 select generate_blob(); drop table t1; drop function generate_blob; Warnings: Warning 131 Using innodb_file_format is deprecated and the parameter may be removed in future releases. See http://dev.mysql.com/doc/refman/5.7/en/innodb-file-format.html