Oracle Solution for Error ora-38705

ORA-38705: Expected block size string does not match string in log header.

What triggered the Error:

When the flashback log file header was read, the block size in the control file did not match the block size contained in the header.

What should we do to fix it:

If you are doing a FLASHBACK DATABASE, then the flashback cannot be performed because of the corrupted log. A restore and an incomplete recovery must be performed instead.