please i want to ask about something

when i run form after i design it i foun error
'protocol adapter error"
why???????????????



thanks alot

another thing i wnt to ask about
when i connect to database from form builder if i write that USER NAME: hr
PASSWORE: hr
DATABASE: ordl
i found error that say (coud not resolve the connect identifier specified"
and when i write that USER NAME: hr
PASSWOED: hr
and i did not write database it connected

please i want someone to solve this problem to me

thanks alot

أخى الفاضل قم بعمل الأتى:
1- افتح قائمة start>>>>oracle home>>>>configration and migration>>>oracle net configratio
2- الأختار الأختيار الأول listener configration
3- ثم أكمل الى نهاية الشاشات
3- قم بعمل restart لكل oracle services
4- افتح الفورم و حاول عمل connect

و ان شاء الله تشتغل معاك

انا عملت الخطوات دي بس برضه بيدينى error لما بعمل login
"listener does not currently konow of service requested in connect description"