在重启Confluence应用时，突然遇见这个检查错误，查询总结需要修改Mysql数据库的所有字符编码和排序编码，报错如下：

　　　　Confluence Help – This installation of Confluence has failed one or more bootstrap configuration checks. Please check the logs for details.

修改数据库、表、列、外键字符编码和排序编码

设置数据库字符编码为utf8，排序编码utf8_bin

SET FOREIGN_KEY_CHECKS=0;
ALTER DATABASE db_name CHARACTER SET utf8 COLLATE utf8_bin;
SET FOREIGN_KEY_CHECKS=1;

设置表字符编码,将查询将生成一条条ALTER TABLE语句,执行所有查询结果

SET FOREIGN_KEY_CHECKS=0;
SELECT CONCAT('ALTER TABLE ', table_name, ' CHARACTER SET utf8 COLLATE utf8_bin;')
FROM information_schema.TABLES AS T, information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` AS C
WHERE C.collation_name = T.table_collation
AND T.table_schema = 'db_name'
AND
(
C.CHARACTER_SET_NAME != 'utf8'
OR
C.COLLATION_NAME != 'utf8_bin'
);
SET FOREIGN_KEY_CHECKS=1;

设置列字符编码,将查询生成一条条ALTER TABLE语句,执行所有查询结果

SET FOREIGN_KEY_CHECKS=0;
SELECT CONCAT('ALTER TABLE `', table_name, '` MODIFY `', column_name, '` ', DATA_TYPE, '(', CHARACTER_MAXIMUM_LENGTH, ') CHARACTER SET UTF8 COLLATE utf8_bin', (CASE WHEN IS_NULLABLE = 'NO' THEN ' NOT NULL' ELSE '' END), ';')
FROM information_schema.COLUMNS 
WHERE TABLE_SCHEMA = 'yourDB'
AND DATA_TYPE = 'varchar'
AND
(
CHARACTER_SET_NAME != 'utf8'
OR
COLLATION_NAME != 'utf8_bin'
);
SET FOREIGN_KEY_CHECKS=1;

或者

SET FOREIGN_KEY_CHECKS=0;
SELECT CONCAT('ALTER TABLE `', table_name, '` MODIFY `', column_name, '` ', DATA_TYPE, ' CHARACTER SET UTF8 COLLATE utf8_bin', (CASE WHEN IS_NULLABLE = 'NO' THEN ' NOT NULL' ELSE '' END), ';')
FROM information_schema.COLUMNS 
WHERE TABLE_SCHEMA = 'yourDB'
AND DATA_TYPE != 'varchar'
AND
(
CHARACTER_SET_NAME != 'utf8'
OR
COLLATION_NAME != 'utf8_bin'
);
SET FOREIGN_KEY_CHECKS=1;

忽略外键约束
可能需要忽略外键约束。可以SET FOREIGN_KEY_CHECKS在更新数据库时使用该命令忽略外键约束。

　　SET FOREIGN_KEY_CHECKS=0;
　　--其他查询语句
　　SET FOREIGN_KEY_CHECKS=1;

备注：
作者：Shengming Zeng
博客：http://www.cnblogs.com/zengming/
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