Issue Oracle Perfomance degradation running on RHEL 5.7

Solution In Progress - Updated -

Issue

  • Periods of high system times
00:00:03          CPU     %user     %nice   %system   %iowait    %steal     %idle
...
09:00:27           93      9.63      0.44     55.33     22.52      0.00     12.07
09:00:27           94      9.73      0.34     56.08     23.02      0.00     10.83
09:00:27           95      8.86      1.05     50.27     28.15      0.00     11.67
09:00:27           96     11.88      0.00     54.79     13.68      0.00     19.65
09:00:27           97     12.30      0.00     60.34      9.81      0.00     17.54
09:00:27           98     11.30      0.00     64.14      9.79      0.00     14.77
09:00:27           99      8.54      0.03     62.63     12.10      0.00     16.70
09:00:27          100     10.89      0.00     58.70     11.91      0.00     18.49
09:00:27          101     14.32      0.00     49.55     16.95      0.00     19.18
09:00:27          102     13.53      0.00     50.11     19.00      0.00     17.36
09:00:27          103     45.88      0.00     44.79      8.87      0.00      0.46
09:00:27          104      9.43      0.26     44.71     26.72      0.00     18.88
09:00:27          105      6.24      0.15     56.02     21.55      0.00     16.04
...

Environment

  • Redhat Enterprise Linux 5.7
  • Oracle

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