Question regarding blocking locks

I have a question regarding blocking locks in the pg database. I ran into a
process which terminated abnormally, and to fully clear the locks it left
behind I had to reboot the system (probably restarting postmaster would have
had the same effect). This was a personal development system so this was no
big deal to reboot it. I would like to know what other options I have so if
this was to occur in a production environment in the future I had a less
drastic measure to take to resolve the issue.

I saw the locks in the pg_locks view (the mode was Exclusivelock),

Can someone point me in the right direction to addressing such a problem
should it occur in the future?

Thanks,

Kevin

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