Very often I get the message in the Alert.log:
“Thread 1 cannot allocate new log, sequence 16407
Checkpoint not complete”

Are the redo logs small?

GROUP# STATUS MEMBER BYTES
------ ------- ----------------------------------------------------------------------------------
1 D:\ORANT\DATABASE\LOG1PHC1.ORA 83886080
2 D:\ORANT\DATABASE\LOG2PHC1.ORA 83886080
3 D:\ORANT\DATABASE\LOG3PHC1.ORA 83886080

log_checkpoint_interval = 85000000
log_checkpoint_timeout = 0
checkpoint_process = true

Please give your thoughts
Thank you!