HR database in ORACLE10g

Hi guys, I need some trouble in Jdeveloper 10g:
ODBC is tested in windows by system and password. but i no input service name. (because i don't know it.)
when i connect the ODBC database like SH ,it can show its detail informaiton, but HR database can not extend its detial information. shows error opening node. An error was encountered performing the requested operation:
[Oracle][ODBC]Invalid column number <7>.
Vendor code 0
pLs help me.
thanks !

Are you using JDeveloper? If so what are you doing with ODBC - Java uses JDBC.
Also can you explain what you are trying to do and what steps are you following?
Check out this tutorial to get started with DB connection:
http://otn.oracle.com/obe/obe9051jdev/common/OBEConnection.htm

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