ORA-00327: log [string] of thread [string], physical size [string] less than needed [string]
Cause: A log file has shrunk in size. This is likely to have been caused by operator or operating system error.
Action: Restore the log file from backup. If backup is not available, drop this log and re-create. If the database was shut down cleanly, no further action should be required; otherwise incomplete recovery may be required.