Learn the reason and how to unravel the ORA-01200 error message in Oracle.
When you stumble upon an ORA-01200 error, the following error message will appear:
ORA-01200: proper file size of num is smaller than right measurement of num blocks
A file that you tried to get right of entry to is smaller in measurement than what the file header and manage file have recorded.
The option(s) to resolve this Oracle error are:
The file has been truncated. Try restoring the file from a backup.