Hi DBAs, I've the environment of Oracle 10g (10.2.0.3) on SUSE Linux 9 (32-bit). I've got 5 redo logfiles of 250MB each, still I'm seeing this the following error messages in the alert log file: *Thread 1 cannot allocate new log, sequence 17640 Checkpoint not complete* Users are also complaining of the slow database. What else can I do to make it perform better and get rid of the above message? Thanks for the help. Saad