Caused by: dm.jdbc.driver.DMException: 连接尚未建立或已经关闭
时间: 2024-01-19 20:03:35 浏览: 296
This error message is in Chinese and it roughly translates to "Connection has not been established or has already been closed".
This error is likely caused by an issue with the database connection. It could be that the connection was not properly established or that it was closed unexpectedly.
To resolve this issue, you may need to check your code and ensure that the database connection is being properly established and maintained. You may also need to check the database logs to see if there are any errors or issues with the connection. It may be necessary to restart the database or the application to resolve the issue.
相关问题
Caused by: dm.jdbc.driver.DMException: 记录超长
这个错误通常发生在试图将超过数据库表中某个字段允许长度的数据插入到该字段中时。你需要检查数据是否符合表中字段的长度限制。如果数据确实需要这么长的字段,你可以考虑修改该字段的长度,或者将数据拆分成更小的部分以适应字段长度。另外,你还可以考虑使用其他数据类型来存储该值,例如使用BLOB(二进制大对象)或CLOB(字符大对象)类型来存储超长数据。如果问题仍然存在,可能需要查看更多的错误信息或者联系数据库管理员进行帮助。
Caused by: dm.jdbc.driver.DMException: 第2 行附近出现错误: 无效的表或视图名[SYS_CONFIG]
这个错误信息看起来是数据库操作时出现了问题,具体原因可能是你在执行 SQL 语句时引用了一个不存在的表或视图名(SYS_CONFIG)。你可以检查一下你的 SQL 语句,确保表或视图名是正确的,并且确保对应的表或视图已经创建。如果还有问题,可以提供更多的上下文信息和代码片段,这样我可以更好地帮助你解决问题。
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