ORA-01210: data file header is media corrupt

admin

ORA-01210: data file header is media corrupt
Cause: The file header block is internally inconsistent. The beginning of the block
has a header with a checksum and other data for insuring the consistancy of the
block. It is possible that the last disk write did not operate correctly. The most
likely problem is that this is not a datafile for any database.
Action: Have operating system make correct file available to database. If the trace
file dump indicates that only the checksum is wrong, restore from a backup and
do media recovery.