Oracle database consuming more Virtual memory

Hello All,

I have a issue with my database, it is consuming a lot of virtual memory on HP-UX box

Here is the memory utilization of my DB.

its a output of glance command.

SPM_ORA_SID            117    12   0.0   0.2    5.5    5.5  5.26gb   468gb

what all the things i need to check