Hi Daniel,
You may stop the application and database.
Then rename the following files or move them to different location
F:\sapdb\data\wrk\TGP.dbm.shi
F:\sapdb\data\wrk\TGP.dbm.shm
Then start database and application ..
Also check whether file system /sapdb has been mounted with CIO option. If yes, then mount is with normal RW and check the results.
Hope this helps.
Regards,
Deepak Kori