Oracle Server Overloaded?? RAM added to 32G

top - 17:32:31 up 3 days, 16:45,  3 users,  load average: 10.04, 10.15, 10.48
Tasks: 153 total,  11 running, 142 sleeping,   0 stopped,   0 zombie
Cpu(s): 90.1% us,  4.4% sy,  0.0% ni,  1.0% id,  2.9% wa,  0.5% hi,  1.0% si
Mem:  32904160k total, 32845724k used,    58436k free,   527928k buffers
Swap:  2097144k total,   148640k used,  1948504k free, 31528636k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1158 oracle9   20   0 5029m 2.8g 2.8g R 96.5  9.1 325:23.94 oracle
 2968 oracle9   17   0 5028m 1.7g 1.7g R 94.5  5.3  30:07.38 oracle
 2795 oracle9   25   0 5028m 2.0g 2.0g R 93.8  6.5  53:39.48 oracle
 3046 oracle9   24   0 5028m 1.6g 1.6g R 92.9  5.0  22:26.82 oracle
 2539 oracle9   18   0 5029m 2.2g 2.2g R 91.5  7.1  79:07.46 oracle
 2966 oracle9   17   0 5028m 1.7g 1.7g R 90.2  5.4  29:24.80 oracle
 3072 oracle9   25   0 5028m 1.5g 1.5g R 85.9  4.8   9:15.69 oracle
 3070 oracle9   18   0 5028m 1.5g 1.5g R 50.3  4.8  10:02.54 oracle
 3074 oracle9   15   0 5028m 1.6g 1.6g D 33.6  5.0  10:10.16 oracle
 9960 oracle9   15   0 5033m 759m 751m S 26.6  2.4 505:34.59 oracle
 2988 oracle9   18   0 5028m 1.6g 1.6g R 10.6  5.3  26:40.31 oracle
 9968 oracle9   16   0 28908 5260 2872 S  0.7  0.0  16:13.83 tnslsnr
15463 root      16   0  4360 1128  840 S  0.3  0.0   7:21.80 top