failed to validate a newly established connection之数据库的validationQuery配置

failed to validate a newly established connection之数据库的validationQuery配置

validationQuery是用来验证数据库连接的查询语句,这个查询语句必须是至少返回一条数据的SELECT语句。每种数据库都有各自的验证语句,收集了几种常见数据库的validationQuery。

failed to validate a newly established connection之数据库的validationQuery配置

 

 

failed to validate a newly established connection之数据库的validationQuery配置

failed to validate a newly established connection之数据库的validationQuery配置

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