What to do, when svn cleanup fails

I'm using TortoiseSVN on Windows. Today the "svn update" crashed somehow and after this
"svn cleanup" could not finish successfully.

I found a hint here: http://stackoverflow.com/questions/158664/what-to-do-when-svn-cleanup-fails

Started DBeaver and created a DB-Connection to the .svn/wc.db.
After opening the database, I removed everything from the WORK_QUEUE table and after this,
the "svn cleanup" worked again. This prevented me from doing a full checkout again.