Problems with page cache in a domain controller

Hi All.

I have a server wtih oracle vm 3.0 and I have problems with the memory in the domain controller (primary), i have a high page cache utilization:

> ::memstat

Page Summary                Pages                MB  %Tot

------------     ----------------  ----------------  ----

Kernel                      99220               775   19%

Anon                        21463               167    4%

Exec and libs                4172                32    1%

Page cache                 380371              2971   74%

Free (cachelist)             7096                55    1%

Free (freelist)              1052                 8    0%

top

last pid:  2660;  load avg:  0.04,  0.04,  0.03;       up 149+22:57:16                                                                                                                21:01:24

60 processes: 58 sleeping, 1 zombie, 1 on cpu

CPU states: 99.4% idle,  0.1% user,  0.5% kernel,  0.0% iowait,  0.0% swap

Memory: 4096M phys mem, 79M free mem, 2051M total swap, 1816M free swap

I have the problem in the two servers with oracle vm and solaris 10.

Any idea to improve the memory utilization?