An SQL data change is not permitted for a read-only connection

java.sql.SQLException: An SQL data change is not permitted for a read-only connection, user or database.
org.apache.derby.impl.jdbc.EmbedSQLException: An SQL data change is not permitted for a read-only connection, user or database.
org.apache.derby.iapi.error.StandardException: An SQL data change is not permitted for a read-only connection, user or database.

这个错误发现在Nacos中，删除derby下的db.lck文件即可。