项目启动报 JDBC Driver has been forcibly unregistered

2024-06-08 10:08:18

2019独角兽企业重金招聘Python工程师标准>>>

registered the JBDC driver [oracle.jdbc.OracleDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

周折了半天终于找到问题，如果是IDEA切换到控制到看具体异常

我的异常时某个表不存在，其实表是存在。发现sql里面表名是大写

原来是mysql数据库默认初始大小写敏感，最后设置成mysql数据库大小写不敏感即可：

查看当前mysql的大小写敏感配置

show global variables like '%lower_case%';+------------------------+-------+
| Variable_name          | Value |
+------------------------+-------+
| lower_case_file_system | ON    |
| lower_case_table_names | 0     |
+------------------------+-------+

lower_case_file_system

表示当前系统文件是否大小写敏感，只读参数，无法修改。

ON 大小写不敏感
OFF 大小写敏感

lower_case_table_names

表示表名是否大小写敏感，可以修改。

lower_case_table_names = 0时，mysql会根据表名直接操作，大小写敏感。
lower_case_table_names = 1时，mysql会先把表名转为小写，再执行操作。

设置lower_case_table_names的值

打开my.cnf文件，加入以下语句后重启。

CentOS中的my.cnf(/etc/my.cnf)的[mysqld]区段下增加: lower_case_table_names=1

然后重启mysql

转载于:https://my.oschina.net/lvzunwei/blog/1837089

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