Oracle Error LFI-00100: Unable to perform operation, file not opened in string.

Oracle Error Message

LFI-00100: Unable to perform operation, file not opened in string.

Reason for the Error

The file has not been successfully opened at the time the operation is attempted.

Solution

Check to make sure that the file exists (for read) or that the program has access to the write a file (for write). It is also possible that the file was just never opened