redo log switches per week

19.9 on Oracle Linux

select count(*) from gv$log_history where first_time > sysdate - 7 ;

On checking some databases I noticed redologs sizes beinq quite big.

All is relative, but I then checked the number of logswitches, and found:

Most databases - and these are all Production,

have betwen 45 and 60 logswitches on a weekly basis.

45 logswitches per week is one logswitch every 224 minutes, on average

That doesn't sound sufficient, in context of backup accuracy.

I thought as a general rule to aim for 2 or 4 logswitches per hour,

which is one logswitch every 15 or 30 minutes.

One logswitche every 30 minutes sounds much better (than every 224 minutes),