Oracle Error Message
LFI-00102: Unable to seek in sequentially accessed file.
Reason for the Error
The file was opened with the flag LFILFA_SEQ for sequential file operations. Use seek only on files that are opened with the LFILFA_RANDOM flag for random access.
Solution
Check to see how the file is being opened and accessed and make the two operations consistent (that is, make them both operations either sequential or random).