After 3 years I reopen a Scada project. I update Scada release with the new one. I also change, some months ago, MYSQL from 5.7 to 8.0 .
When manage databases on Ide I received this messages : 1 - Java.lang.NullPointerException
2 - Java.sl.SQL.Exception. Unkmown system variable 'qyery_cache_size'
The variable is no more supported with Mysql 8.0 If I try to add the line to my.ini MYSQL server doesn-'t start..
Also on Runtime I have the same error and I can connect to the database.
Someone knows how to reapair ?
Thanks very much.
Stefano Viola
