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1.taos的版本信息 3.0.4.1 2.jdbc的版本 3.2.1 3.druid连接池版本 1.2.11
Java 应用程序报错 “sql: select server_status(), desc: unable to establish connection”
因为使用了连接池,参考了官方的示例demo,配置了ValidationQuery dataSource.setValidationQuery("select server_status()"); 在多台机器的集群下,发现其中一个节点挂掉之后,高可用还是能保证的,但是这个 “select server_status()”校验就失败了,导致Java服务连接一直报错,影响业务。
dataSource.setValidationQuery("select server_status()");
解决办法就是关闭了检测校验: validationQuery: null
validationQuery: null
The text was updated successfully, but these errors were encountered:
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版本信息
1.taos的版本信息 3.0.4.1
2.jdbc的版本 3.2.1
3.druid连接池版本 1.2.11
问题描述
Java 应用程序报错 “sql: select server_status(), desc: unable to establish connection”
问题原因以及解决办法
因为使用了连接池,参考了官方的示例demo,配置了ValidationQuery
dataSource.setValidationQuery("select server_status()");
在多台机器的集群下,发现其中一个节点挂掉之后,高可用还是能保证的,但是这个 “select server_status()”校验就失败了,导致Java服务连接一直报错,影响业务。
解决办法就是关闭了检测校验:
validationQuery: null
文档是否需要做一个特殊的说明,或者其他的校验语句?
The text was updated successfully, but these errors were encountered: