How to fix the error ORA-00294: invalid archivelog format specifier ‘string’?

In this post, you’ll learn more about the Oracle ErrorORA-00294: invalid archivelog format specifier ‘string’ with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-00294: invalid archivelog format specifier ‘string’

Reason for the Error ORA-00294: invalid archivelog format specifier ‘string’

An invalid format specifier was found in the LOG_ARCHIVE_FORMAT initialization parameter. The only characters permitted following the % symbol are s, S, t, and T.

How to fix the Error ORA-00294: invalid archivelog format specifier ‘string’ ?

You can fix this error in Oracle by following the below steps

Correct the initialization file and re-start the instance.