An error was reported when testing the database connection in the Maven project, and the connection object could not be obtained. I saw a few examples and said that it was a url problem, but it was inconsistent, so I wondered if there would be a problem with the sql jar package, so I read […]
Tag: transient
[Solved] Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException
This is my problem: Then I changed a lot of places, and the results were all the same, all of which reported the error that the database could not be connected, so I tried to modify the version of mysql dependency in the pom.xml configuration file. I am using idea2022. I guess it may be […]
[Solved] com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException exception solution
The reason is that I imported the webapps project “woniusales.war” in tomcat, started tomcat by double-clicking startup.bat, and reported an error in the black box. Open localhost:8080/woniusales and find that the project was not successfully configured. [Severe] com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException The reason for the error is: the mysql version on the computer is high, and the mysql-java […]
[Solved] RAC environment alert log reports error Drop transient type: SYSTP2JW0acnAurDgU1sBqMBryw== troubleshooting
During the recent daily inspection, it was found that a user’s RAC environment reported an error: *** 2022-02-22 19:34:58.672 Drop transient type: SYSTP2JW0acnAurDgU1sBqMBryw== Check the ORACLE MOS website, there is a similar problem described in the document: Receiving ORA-21780 Continuously in the Alert Log and SMON Trace Reports “Drop transient type”. (Doc ID 1081950.1). The […]