...
Download the latest version of MySQL Connector/J driver from the following URL: MySQL Connector/J 8.0 driver
Untar/Unzip the downloaded file and extract find the Jar file mysql-connector-j-8.x.x.jar from the downloaded file.
Copy the MySQL Connector/J driver(Jar file) to the following directory:
Code Block <Jira-home-directory>/rmsis/libs
...
Please take a backup of your RMsis database which can be restored later.
Shutdown Jira+RMsis server.
This is necessary to remove the cached data regarding database drivers.
Delete the jdbc.properties file from <jira_home>/rmsis/conf directory.
Download the MySQL Connector/J driver (v8.x only) and place the Jar file in <Jira-home-directory>/rmsis/libs directory.
Create the libs directory if it does not exist.
MySQL Connector/J driver v8.x works with MySQL Database v5.x as well as MySQL Database v8.x
Start Jira+RMsis server.
Switch to the RMsis Configuration [RMsis Menu > RMsis Configuration] page and click on the Re-Configure RMsis button.
This will re-initialize the installation/upgrade process.
Your existing data will remain preserved, it will only update RMsis configuration details.
When prompted for the database details, insert the details of your existing database.
Complete the upgrade process.
...