confluence: restore Error

[SungJin Woo]

Error message

A space with the key 'ds' already exists. Please delete it before restoring a space with the same key.

but i can't find DS space.

so how can i delete Key "ds"?

[Colin Goudie · Accepted solution]

ds is the Demonstration Space. Can you see that in the dashboard?

[SungJin Woo]

No i can't see that.

[Lars Maehlmann]

If you can't find the space in the space directory or in the DB

SELECT * FROM spaces WHERE  spacekey= 'DS' ORDER BY spacename;

 and everything else works You can try to rebuild the index from scratch.
Here is description :

How to Rebuild the Content Indexes From Scratch on Confluence Server

I hope it helps