weblogic can get dirty and corrupt some of its folders after a disk full error of OS. One thing is Adminserver stalls and does not restart. If this is the case, one possible solution is to delete the "ldap" folder under user_projects/domains/yourdomain/servers/AdminServer/data/
It can also corrupt upload folders of Adminserver. If you see errors like
Unable to access the selected application
Exception in AppMerge flows' progression
in deployment console while installing ears from upload folders, this can be solved by deleting respective upload folder, recreating it and copying ear files back. then install.