Can you spot any irregularities with this redo log configuration

DB version:10gR2
We were frequently getting 'log file sync' ranked 1 in TOP 5 wait events in AWR reports. So i looked at alert log.Can you spot any irregularities from below mentioned Redo log switching i got from the alert log?
Thu Nov 6 05:00:07 2008
Thread 1 advanced to log sequence 65790
Current log# 2 seq# 65790 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo2a.log
Current log# 2 seq# 65790 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo2b.log
Thu Nov 6 05:40:37 2008
Thread 1 advanced to log sequence 65791
Current log# 4 seq# 65791 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo4a.log
Current log# 4 seq# 65791 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo4b.log
Thu Nov 6 05:52:31 2008
Thread 1 advanced to log sequence 65792
Current log# 3 seq# 65792 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo3a.log
Current log# 3 seq# 65792 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo3b.log
Thu Nov 6 06:19:05 2008
Thread 1 advanced to log sequence 65793
Current log# 1 seq# 65793 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo1a.log
Current log# 1 seq# 65793 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo1b.log
Thu Nov 6 06:29:04 2008
Thread 1 advanced to log sequence 65794
Current log# 2 seq# 65794 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo2a.log
Current log# 2 seq# 65794 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo2b.log
Thu Nov 6 06:34:24 2008
Thread 1 advanced to log sequence 65795
Current log# 4 seq# 65795 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo4a.log
Current log# 4 seq# 65795 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo4b.log
Thu Nov 6 06:42:02 2008
Thread 1 advanced to log sequence 65796
Current log# 3 seq# 65796 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo3a.log
Current log# 3 seq# 65796 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo3b.log
Thu Nov 6 06:56:19 2008
Thread 1 advanced to log sequence 65797
Current log# 1 seq# 65797 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo1a.log
Current log# 1 seq# 65797 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo1b.log
Thu Nov 6 07:16:12 2008
Thread 1 advanced to log sequence 65798
Current log# 2 seq# 65798 mem# 0: /DLPRD/ora1/APP_MK/APP_MK_redo2a.log
Current log# 2 seq# 65798 mem# 1: /DLPRD/ora2/APP_MK/APP_MK_redo2b.log

Log file sync is usually a symptom of "over commiting", perhaps some batch job who commits after every row processed, see Note 34592.1 WAITEVENT: "log file sync" Reference Note for a complete reference.
HTH
Enrique

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