Redmine

Thanks for your permanent cooperation
if i can ask u question

How can I transfer fields from Oracle to MySQL?
In my work environment, I own two systems, the Oracle 12C system and the redmine system, and this requires users to enter information twice. I want to find a suitable solution to transfer information from the Oracle system to the Redmine system, and to take some fields and transfer them to the Redmine system through the similarity of the issue_id field