MySQL doesn't support some types of characters (such as emojis) with the utf8 encoding. You need to be on MySQL 5.5+ and force utf8mb4 (everywhere, client and server). You can do this sending the query "SET NAMES utf8mb4". Check this

You have a different solution? A short tip here would help you and many other users who saw this issue last week.

  • turning off autocommit
    via springframework by *anonymous
  • autcommit in DatabaseJournal.append
    via by dainius rygelis,
  • Re: autcommit in DatabaseJournal.append
    via by Dominique Pfister,
    • java.sql.SQLException: Can't call commit when autocommit=true at com.mysql.jdbc.SQLError.createSQLException( at com.mysql.jdbc.Connection.commit( at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( at java.lang.reflect.Method.invoke( at net.sf.hajdbc.util.reflect.Methods.invoke( at net.sf.hajdbc.sql.AbstractInvocationHandler$SimpleInvoker.invoke( at net.sf.hajdbc.sql.DatabaseWriteInvocationStrategy$ at java.util.concurrent.FutureTask$Sync.innerRun( at at java.util.concurrent.ThreadPoolExecutor$Worker.runTask( at java.util.concurrent.ThreadPoolExecutor$ at

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