SpletThe last packet sent successfully to the server was 155 milliseconds ago. at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance (Unknown Source) at … Splet10. jan. 2024 · The driver has not received any packets from the server. at org.springframework.transaction.support.AbstractPlatformTransactionManager.startTransaction(AbstractPlatformTransactionManager.java:400) at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)

MySQLの「Communications link failure...」の解決方法を調べてい …

Splet11. apr. 2024 · The last packet sent successfully to the server was 385,290,820 milliseconds ago. is longer than the server configured value of ‘wait_timeout’. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J ... Splettry to deactivate the query cache "query_cache_size=0" in your my.cnf, restart mysql server and try again. you could also try to reset the query cache like this: "reset query cache". if … ghostbusters ghost world

MySQL----JDBC无法连接数据库，报The driver has not ... - CSDN博客

Splet02. nov. 2024 · 1 answer. This com. mysql .jdbc.exceptions.jdbc4.CommunicationsException exception occurs if your database … Splet30. mar. 2024 · 在用jemter连接数据库时报Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.)。翻阅各种资料，终于解决了。 解决办法：将图中数据库URL改为jdbc:mysql:. Splet14. apr. 2024 · The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. The driver has not received any … ghostbusters giant marshmallow