When configuring the Oracle Connection to work remotely with vCenter Server, which
of the following is required (Choose Two)?

A.
The TNS Service Name option must be configured in the ODBC DSN

B.
Add the entry open_cursors = 300 to the C:.ora file

C.
The tnsnames.ora file must be edited with the managed host name

D.
Use the Net8 Configuration Utility to add the service name

Explanation:
ESX and vCenter Server Installation Guide ESX 4.0, vCenter Server 4.0, page 81-2.
Configure an Oracle Connection for Local Access
VMware recommends that the vCenter Server database be located on the same system as
vCenter Server.
Procedure
2. Configure the TNS Service Name option in the ODBC DSN. The TNS Service Name
is the net service name for the database to which you want to connect. You can find the
net service name in the tnsnames.ora file located in the NETWORKADMIN folder in
the Oracle database installation location.
Configure an Oracle Connection for Remote Access
A vCenter Server system can access the database remotely.
6. Use a text editor or the Net8 Configuration Assistant to edit the tnsnames.ora file
located in the directory C:OracleOraxxNETWORKADMIN, where xx is either 10g or
11g.
Add the following entry, where HOST is the managed host to which the client must
connect.
VPX =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL=TCP)(HOST=vpxd-Oracle)(PORT=1521))