DotNetNuke error

I have a web server and a database sersver, both running in VM's, using Win2K12R2.  One of our websites failes every morning at the exact same time, with the following error.  If anyone has any idea what is causing it, that would be great.
What's strange is, after about 5 -9 minutes, it comes back up by itself.

Message:
DotNetNuke.Services.Exceptions.ModuleLoadException: Unhandled Error Adding Module to FeaturedVideoPane ---> DotNetNuke.Services.Exceptions.PageLoadException: Error: Featured Video is currently unavailable. ---> DotNetNuke.Services.Exceptions.ModuleLoadException: Error: Featured Video is currently unavailable. ---> System.InvalidOperationException: Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.
DanNetwork EngineerAsked:
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R. Toby RichardsConnect With a Mentor Network AdministratorCommented:
Let me know how doing maintenance on your database works out.
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R. Toby RichardsNetwork AdministratorCommented:
Two things:

1. Check your DotNetNuke setup and your Windows Scheduled Tasks to see if there is a recurring task that runs at that time. It  looks like DotNetNuke is trying to install or update a module every day.

2. MaxPoolSize errors are often the result of a poorly maintained database. Make sure that you have an SQL maintenance task that rebuilds your indexes and updates statistics weekly.
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DanNetwork EngineerAuthor Commented:
Task scheduler is clear, no jobs running from 2 am to 3 am except defrag and time synchronization, which both run at 2:05 am and both were successful.

I'll check into the other items you mentioned.  

How can I tell if DotNetNuke is trying to install or update a module?  Is there a DotNetNuke log or something?
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R. Toby RichardsNetwork AdministratorCommented:
I know very little about DotNetNuke. I personally prefer PHP solutions. I do know that there MAY be an auto-update feature somewhere in the settings.
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DanNetwork EngineerAuthor Commented:
my web developer just said that with DotNetNuke, it can't autoupdate, it has to be manually done.
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DanNetwork EngineerAuthor Commented:
Thanks, you pointed me in the right direction, the problem was with my SQL backup job.  I was using the option to index files and for some strange reason, with that option turned on, it would crash dotnetnuke.  I disabled that feature and my issue went away.
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