We have a 10g Db that has started to get these messages. this is output from a query. Even with it sized as large as it is during peak we log switch every 8-9 minutes. Used grid control to set sizes and this is what it came up with. I guess the question is, do I really need to make the log files larger?
NAME VALUE
------------------------------- --------------------
redo synch writes 233,338,611
redo synch time 32,565,396,968
redo blocks read for recovery 194
redo entries 3,401,631,448
redo size 1,694,123,100,088
redo buffer allocation retries 4,821
redo wastage 68,917,615,976
redo writer latching time 10,510
redo writes 246,948,311
redo blocks written 3,557,275,066
redo write time 47,148,388,548
redo log space requests 3,635
redo log space wait time 17,122
redo log switch interrupts 0
redo ordering marks 84,615,315
redo subscn max counts 173,184,512
NAME VALUE
------------------------------- --------------------
redo synch writes 233,338,611
redo synch time 32,565,396,968
redo blocks read for recovery 194
redo entries 3,401,631,448
redo size 1,694,123,100,088
redo buffer allocation retries 4,821
redo wastage 68,917,615,976
redo writer latching time 10,510
redo writes 246,948,311
redo blocks written 3,557,275,066
redo write time 47,148,388,548
redo log space requests 3,635
redo log space wait time 17,122
redo log switch interrupts 0
redo ordering marks 84,615,315
redo subscn max counts 173,184,512