Oracle : Ошибка ORA-01191

"file %s is already offline - cannot do a normal offline"
*Cause: When attempting to do a normal tablespace offline it was discovered
that one of the files in the tablespace was already offline.
*Action: Either bring the datafile online first, or use another tablespace
offline option.

Попробовать перевести

Поискать эту ошибку на форуме