The following is the ORA-19665 error message, you can learn the cause and solution of the Oracle database error.
ORA-19665 size string in file header does not match actual file size of string
Cause: The size of the file as indicated in the file header does not match the true size of the file. The two differing sizes are shown in units of logical blocks.
Solution: This file is not usable; it has most likely been truncated.
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