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  • MySQL案例04:Cause: java.sql.SQLException: Could not retrieve transaction read-only status from server

    今天同事发现程序日志有异常抛出,询问原因,进过排查发现与java的连接参数有关系,具体处理过程如下:

    一、错误信息

    "message": "
    ### Error updating database. Cause: java.sql.SQLException: Could not retrieve transaction read-only status from server
    ### The error may involve com.longfor.io.sync.mapper.IoSyncMapper.insert-Inline
    ### The error occurred while setting parameters
    ### 
    SQL: INSERT INTO io_xxx ( io_id, sync_batch, sync_status, data_start_date, data_end_date ) VALUES ( ?, ?, ?, ?, ? ) ###
    Cause: java.sql.SQLException: Could not retrieve transaction read-only status from server ; SQL [];
    Could not retrieve transaction read-only status from server; nested exception is java.sql.SQLException: Could not retrieve transaction read-only status from server",

    二、错误原因

    数据库版本是5.7.18-log,而程序mysql-connector 库使用的版本是5.1.43,这里用最新的mysql-connector-java-5.1.46-bin.jar替换掉mysql-connector-java-5.1.43-bin.jar

    三、解决方案

    1.下载最新的mysql-connector-java库,替换重启

    https://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-8.0.11-1.el6.noarch.rpm

    https://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.46.tar.gz

    用最新的mysql-connector-java-5.1.46-bin.jar替换掉mysql-connector-java-5.1.43-bin.jar

    goole用户解决方案:
    老库是 mysql-connector-java-5.1.24-bin.jar 这个用在 mysql 5.6.19 版本没有问题,但是在 mysql 5.6.20 版本行就报告上面的异常。使用最新的 mysql-connector-java-5.1.32-bin.jar 后问题现象消除。

    2.google发现有说在jdbc配置中直接修改掉useServerPrepStmts=false参数

    https://stackoverflow.com/questions/32717417/sqlexception-could-not-retrieve-transation-read-only-status-server

    Finaly, I found the root cause of my problem. This is not the database inside the URL, just a consequence.
    
    The problem come from JDBC parameters I use :
    
    cachePrepStmts=true
    prepStmtCacheSize=250
    prepStmtCacheSqlLimit=2048
    useServerPrepStmts=true
    The last one, with MySQL 5.6 is really not recommended because of bugs. So I have remove all statement cache parameters and now my code run correctly.
    
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  • 原文地址:https://www.cnblogs.com/rangle/p/9046121.html
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