HP-UX

That was not vgdisplay output of vg00...
What does swapinfo -tam give you?
What kind of system is this?

PE Size (Mbytes) 4
Total PE 2287

That makes the size of the disc 4 x 2287 = 9148 Mb (about 9 Gb).

It is possible that you specified a "-s <size>" parameter on "pvcreate" and artificially made the disc smaller.
Perhaps that the disc is a "dd" copy from a 9 Gb disc.
Could even be that the O/S is so old that is does not know how to deal with 36 Gb discs.

Thanks every body for the answers, finally I couldnt find a solution, so I recreate the volume group with the maximun size of the disk and I duplicate de logical groups. Maybe it was not the best solution, but it works, and also I couldnt wait more time

There were no other alternatives...You've learned the hard way what can happen when an installation was done immediately after reception without more brainstorming (accepting defaults...). on a 10.20 this is also true for the size / , swap (vg00/lvol2), /stand...
It showed you what being proactive means (likely the disk size (PV) tend to grow, how much should I enter for its max size knowing the value cannot be changed after...)