There are several step by step guides. Look for startup scripts under applmgr user. Which version did you install?
Oracle VM Virtual Appliances for Oracle E-Business Suite Deployment Guide, Release 12.2.4 (Doc ID 1928303.1)
Oracle VM Virtual Appliance for Oracle E-Business Suite Deployment Guide, Release 12.2.6 (Doc ID 2254565.1)
If you are planning to run the 12.2 Vision using the OVA files, please follow my article below. Let me know if your requirement is different.
thank you for reply, i'm using 12.1.3, is it possible to follow your instruction
thank you an a waiting your reply