Virtual Network Performance Box Bridge mode

[ErickMax]

I have two initial scenarios:

Scenario * 1
I have installed virtual box on windows 7, and I have virtualized one elque install linux oracle database 11g oracle.

Scenario * 2
Now on another pc with windows XP I have mounting procedures oracle database 11g.

The problem appears when I migrate from sqlserver to oracle using sqldeveloper, transfirencia of data on performance on the * 1 is really bad and if * 2 is much higher, basically the ratio of 4: 1, know how to improve the speed of the virtual box, I think it may be the vitual adapter, can someone advise me how to improve the migration process with virtual box.

regards

[noteirak]

Your question is very specific and will require to exactly analyze your situation before any kind of optimization. I am afraid this is way out of scope of this forum.
For the Virtualbox optimizing part, there isn't much per say - Virtualbox only emulates hardware, it doesn't emulate programs or a CPU architecture.
What you can check is that you gave it enough CPU power, RAM, disk space and an appropriate networking card (VirtIO would be best here) - just like a physical machine!

Beware that Oracle is quite a beast and unless you actually know what you're doing, you'll end up with poor performance in the first place.