After you upgrade to vCenter Server, consider the postupgrade options and requirements.

To view the upgrade log, open %TEMP%\VCDatabaseUpgrade.log.

Install the vSphere Client and make sure you can access the vCenter Server instance.

Upgrade any additional modules that are linked to this instance of vCenter Server. Additional modules might include vCenter Update Manager, vCenter Converter, and vCenter Guided Consolidation, for example.

On the VMware Web site, log in to your account page to access the license portal. From the license portal, upgrade your VirtualCenter 2.x license. Using the vSphere Client, assign the upgraded license key to the vCenter Server 4.0 host.

In the vSphere Client, select Home > vCenter Server Settings > Licensing to verify that the vCenter Server is connected to a license server. A license server is required if this vCenter Server is managing ESX 3.x/ESXi 3.5 hosts. For information about installing the VMware License Server, see the documentation for VMware Infrastructure 3.

For Oracle databases, copy the Oracle JDBC Driver (ojdbc14.jar) driver to the[VMware vCenter Server]\tomcat\lib folder.

For SQL Server databases, if you enabled bulk logging for the upgrade, disable it after the upgrade is complete.

Optionally, join the vCenter Server system to a Linked Mode group.

Optionally, upgrade the ESX/ESXi hosts in the vCenter Server inventory to ESX 4.0/ESXi 4.0.

Optionally, enable SSL certification checking. Select Home > vCenter Server Settings > SSL Settings. Select vCenter requires verified host SSL certificates and click OK. When you enable SSL checking, the hosts become disconnected from vCenter Server, and you must reconnect them.