ORA-19905: log_archive_format must contain %s, %t and %r
Cause: log_archive_format is missing a mandatory format element. Starting with Oracle 10i, archived log file names must contain each of the elements %s(sequence), %t(thread), and %r(RESETLOGS ID) to ensure that all archived log file names are unique.
Action: Add the missing format elements to log_archive_format.
Error Type: ORA