I did an update of SharePoint 2013 using
December 2017 CU. In central admin I see this info:
Configuration database version: 15.0.4989.1001 Status: Upgrade available
In Upgrade Status page I see that the upgrade was successful without errors.
stsadm.exe -o localupgradestatus I get this:
<object> <name>SPDB1</name> <type>Microsoft.SharePoint.Administration.SPContentDatabase</type> <level>5</level> <status>Cannot Upgrade</status> </object>  content database(s) encountered.  content database(s) still need upgrade or cannot be upgraded.  site collection(s) are contained in the content databases.  site collection(s) still need upgrade.  other objects encountered,  of them still need upgrade or cannot be upgraded.
In one of the posts they suggest to run one or both of these commands:
psconfig.exe -cmd upgrade -inplace v2v -wait (if you want to upgrade product version) psconfig.exe -cmd upgrade -inplace b2b -wait (if you want to apply SharePoint patch, such as SP1 or June CU)
Which one do I run and are there any other steps or checks that I need to perform?
Also any idea why it cannot upgrade the other two content databases?