All Oracle Error CodesOracle DBA Forum

LFI-00118:

Unable to change type to Unknown.
Cause: The function lfichty() was called to change the file extension to LFIEXUNK (Unknown). This is not a valid operation.
Action: Check why you are doing this. If the extension is already unknown then you do not need to do this. If you just want no extension then use the extension type LFIEXNONE.