Q:

Error dropping database (can't rmdir './someDB/', errno: 17)

It's insane. I have tried all the methods but it still throws the same error.
I have a database, want it to run on MySQL-Server. At the beginning of the Database:
DROP SCHEMA IF EXISTS someDB;
CREATE SCHEMA someDB;
USE someDB;

When I tried SHOW DATABASES LIKE 'someDB'; it confirms the existence of it.
I tried:

chmod for the full path to it /var/lib/mysql/someDB/someDB.sql
Stopping MySQL-Server, Deleting the the someDB folder and starting the Server again.
I removed the entire MySQL-Server and reinstalled it again.

After hours of trying, I really need you help.
EDIT:
Answering Y. Collin Comment, when I run sudo ls -la ./someDB, it returns:
total 20
drwxrwxr-x 2 ubuntu ubuntu  4096 Nov 14 16:53 .
drwxrwxrwx 5 mysql  mysql   4096 Nov 14 16:53 ..
-rwxrwxrwx 1 ubuntu ubuntu 12243 Nov 14 16:53 someDB.sql

A:

It turned out that I have a logical mistake.
Inside the someDB.sql file, I am using the USE statement. However, I am trying to run the database by using this command:
mysql -u root -p someDB < someDB.sql

Which is absolutely wrong because the above statement prompt the USE which conflicts with the first line in the sql file (i.e DROP SCHEMA...).
The correct way to do it is:
mysql -u root -p < someDB.sql

because the USE statement is placed in the file already! 

