[basex-talk] dropping DataBase

Do you have any idea about this?

org.basex.core.BaseXException: Database could not be dropped. at org.basex.core.Proc.execute(Proc.java:75)

when it does: new DropDB("DBCabecera").execute(CONTEXT);

My program is doing a lot of actions to get some information and sometimes this error appears, do you know why? How can i solve it?

Another question, what would happen if I create a lot of news DB with the same name and i don't drop them?

Thank you very much!