Heavy swapping

Thu Apr 19 00:00:00 2012
Time drift detected. Please check VKTM trace file for more details.
Time drift detected. Please check VKTM trace file for more details.
Thu Apr 19 16:30:14 2012
Closing scheduler window
Closing Resource Manager plan via scheduler window
Clearing Resource Manager plan via parameter
Thu Apr 19 16:30:37 2012
WARNING: Heavy swapping observed on system in last 5 mins.
pct of memory swapped in [2.83%] pct of memory swapped out [3.47%].
Please make sure there is no memory pressure and the SGA and PGA
are configured correctly. Look at DBRM trace file for more details.