MySQL系统变量(system variables)实际上是一些系统参数，用于初始化或设定数据库对系统资源的占用，文件存放...
java.sql.SQLException: Unknown system variable 'tx_read_only'如果用mysql的本身软件是6.0的,如果用的驱动是最新的5.1.38就会出现如上错误,没有书写权限的。6.0的和5.1.7驱动配合没有问题。来自为知笔记(Wiz
解决【MYSQL】Caused by java.sql.SQLException Unknown system variable 'tx_read_only' Caused by: java.sql.SQLException: Unknown system variable 'tx_read_only' at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:996) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887) at com.m...
mysql驱动错误:java.sql.SQLException: Unknown system variable 'tx_read_only' 2016-04-12 01:45 −... 奔跑吧_兄弟! 0 1857 MySQL案例04:Cause: java.sql.SQLException: Could not retrieve transaction read-only status from server 2018-05-16 15:07 −今天同事发现程序日志有异常抛出,询问原因,进过...
Could not retrieve transation read-only status server; nested exception is java.sql.SQLException: Could not retrieve transation read-only status server] with root cause java.sql.SQLException: Unknown system variable 'tx_read_only' at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:996) at...
--transaction-read-only 设置默认事务访问模式 ,默认情况,read-only模式是禁用,所以这个模式是读或写。在运行时,设置默认事务访问模式,使用 set transaction 语句或设置系统变量tx_read_only 。这选项在MySQL5.6.5新增的。 --tmpdir=path, -t path 用于创建临时文件的目录路径 ...
安装MySQL服务:mysqld --install 启动服务:net start mysql 以下为解决客户端用Ip连接时,报“Host XXX is not allowed to connect to this MySQL server。”的问题: 又有报错“Unknown system variable 'tx_read_only'” MySQl和程序中设定的驱动包版本不一致,需要将MYSQL降级。
- Variable: tx_isolation Yes Both Yes transaction_prealloc_size Yes Yes Yes Both Yes transaction_read_only Yes Yes Both Yes - Variable: tx_read_only Yes Both Yes transaction_write_set_extraction Yes Yes Yes Both Yes tx_isolation Yes Both Yes tx_read_only Yes Both Yes unique_checks Yes ...
MySQL 的默认事务隔离级别是 REPEATABLE-READ (可重复读)。 select @@tx_isolation; 却提示错误:Unknown system variable 'tx_isolation' 在MySQL 8.0.3 中,该变量已经被 transaction_isolation 替换了。 代码语言:javascript 复制 --MySQL8.0查询事务隔离级别 ...
(MysqlMigrator.java:42) Caused by: java.sql.SQLException: Unknown system variable 'tx_read_only' at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1078) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4190) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4122) at ...