Oracle Error ORA-19905: log_archive_format must contain %s, %t and %r

Oracle Error Message

ORA-19905: log_archive_format must contain %s, %t and %r

Reason for the Error

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.

Solution

Add the missing format elements to log_archive_format.

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