hi, I have redhat 8.3, after installation Cache and everything looks good , when i stop the DB by  /usr/cachesys/cstop i get :   Apr 18 16:10:22 opticanan Cache(CACHE)[115418]: Cannot remove database lock /cav/mln/cache.lck: Delete failed Apr 18 16:10:22 opticanan Cache(CACHE)[115418]: Cannot remove database lock /cav/w/mlnw/cache.lck: Delete failed Apr 18 16:10:22 opticanan Cache(CACHE)[115418]: Cannot remove database lock /cav/w/mgrw/cache.lck: Delete failed Apr 18 16:10:27 opticanan Cache(CACHE)[115418]: Unable to open database lock /usr/cachesys/mgr/fdbms/cache.lck to delete it Apr 18 16:10:27 opticanan Cache(CACHE)[115418]: Cannot remove database lock /cav/acc/cache.lck: Delete failed Apr 18 16:10:27 opticanan Cache(CACHE)[115418]: Cannot remove database lock /cav/cav/cache.lck: Delete failed Apr 18 16:10:27 opticanan Cache(CACHE)[115418]: Cannot remove database lock /cav/w/cavw/cache.lck: Delete failed Apr 18 16:45:13 opticanan Cache(CACHE)[117065]: Unable to open database lock /usr/cachesys/mgr/fdbms/cache.lck to delete it Apr 18 19:47:51 opticanan Cache(CACHE)[118475]: Cannot remove database lock /cav/cav/cache.lck: Delete failed Apr 18 19:47:56 opticanan Cache(CACHE)[118475]: Unable to open database lock /usr/cachesys/mgr/fdbms/cache.lck to delete it   I think it belongs to permissions ' what permission exactly I need?