I am installing Desktop Central 9 SP2 (upgrading from 9.1.113 to 9.2.0).  It is stuck upgrading PostgreSQL from 9.2.9 to 9.4.4 at 50% completed.  It has been at 50% completed for over 6 hours.  When hovering the mouse over the Installation Status window, the mouse pointer spins.  The system is using almost no CPU activity and more than half the physical memory is available.  I see no dialog windows waiting for input (I moved the Installation Wizard window to see if there was a dialog window behind and see none).

There are three empty boxes at the bottom of the Installation Wizard window that look like they might should be buttons, but the boxes are empty and the mouse pointer spins when on top of those boxes.  See the attached screen shot.

From the logs in C:\ManageEngine\DesktopCentral_Server\_pgupgrade, it looks like the service pack is in the process of dumping objects from the database.

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  pg_upgrade run on Sat Sep 17 17:46:59 2016
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Performing Consistency Checks
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Checking cluster versions                                   ok
Checking database user is a superuser                       ok
Checking database connection settings                       ok
Checking for prepared transactions                          ok
Checking for reg* system OID user data types                ok
Checking for contrib/isn with bigint-passing mismatch       ok
Checking for invalid "line" user columns                    ok
Creating dump of global objects                

I am going to leave it running for a few more hours.  If it still makes no progress and I kill the process, is my database messed up and I cannot keep running 9.1 and can't rerun the SP2 install?