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

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

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

Upgrade any additional modules that are linked to this instance of vCenter Server, such as vSphere Update Manager.

On the VMware Web site, log in to your account page to access the license portal. From the license portal, upgrade your vCenter Server license. Using the vSphere Client or the vSphere Web Client, assign the upgraded license key to the vCenter Server 5.1 host.

For Oracle databases, copy the Oracle JDBC Driver (ojdbc14.jar or ojdbc5.jar) 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 or migrate the ESXi or ESX hosts in the vCenter Server inventory to ESXi 5.1.

If it is not enabled, enable SSL certification checking for all vSphere HA clusters. SSL certification checking is required to configure HA on the hosts. In vCenter Server, select Administration > vCenter Server Settings > SSL Settings > vCenter requires verified host SSL certificates. Follow the instructions to verify each host SSL certificate and click OK. If necessary, reconfigure HA on the hosts.