Help me understand Top output-HPUX

[jlakhani]

Can somebody pls hellp me understand this output?
Q1. What does it mean when the top 10 oracle processes takes 68% of cpu?
Q2. How do I interpret that?

Load averages: 1.19, 1.12, 0.96
208 processes: 171 sleeping, 37 running
Cpu states:
CPU   LOAD   USER   NICE    SYS   IDLE  BLOCK  SWAIT   INTR   SSYS
 0    0.92  76.8%   0.0%   6.2%  17.0%   0.0%   0.0%   0.0%   0.0%
 1    1.18  87.5%   0.0%   1.8%  10.7%   0.0%   0.0%   0.0%   0.0%
 2    1.41  84.8%   0.0%   1.8%  13.4%   0.0%   0.0%   0.0%   0.0%
 3    1.10  89.3%   0.0%   3.6%   7.1%   0.0%   0.0%   0.0%   0.0%
 4    1.31  94.6%   0.0%   1.8%   3.6%   0.0%   0.0%   0.0%   0.0%
 5    1.34  77.7%   0.0%   6.2%  16.1%   0.0%   0.0%   0.0%   0.0%
 6    1.12  80.4%   0.0%   3.6%  16.1%   0.0%   0.0%   0.0%   0.0%
 7    1.12  83.0%   0.0%   2.7%  14.3%   0.0%   0.0%   0.0%   0.0%
---   ----  -----  -----  -----  -----  -----  -----  -----  -----
avg   1.19  83.9%   0.0%   3.6%  12.5%   0.0%   0.0%   0.0%   0.0%

Memory: 13296668K (9492832K) real, 13788980K (9944812K) virtual, 4478744K free  Page# 1/42

CPU TTY  PID USERNAME PRI NI   SIZE    RES STATE    TIME %WCPU  %CPU COMMAND
 1   ? 18397 oracle   240 20 12779M  5360K run      0:39 65.06 64.40 oracletrxp
 2   ? 18354 oracle   239 20 12778M  4272K run      2:12 63.25 63.14 oracletrxp
 0   ? 18357 oracle   240 20 12779M  5360K run      1:49 63.25 63.13 oracletrxp
 5   ? 18377 oracle   154 20 12778M  4144K sleep    1:17 56.47 56.37 oracletrxp
 3   ? 18380 oracle   240 20 12779M  5360K run      1:03 45.72 45.64 oracletrxp