The default setting for the virtualdb.host property has changed from 0.0.0.0 to localhost in the Formula.properties file. Note that remote machines cannot connect to MOSQL unless this property is defined to a hostname or IP address of a network interface that the remote machine can access. Add the new value to the Formula.custom.properties file.
Please consider the following technical considerations for the dashboard:
After you upgrade from Operations Center 5.5 to 5.6, on Web pages where you previously added portlets, the portlet sizes are skewed in Internet Explorer 11.