According to this page <https://msdn.microsoft.com/en-ca/library/cc704588.aspx>, exception 0xC0000005 means STATUS_ACCESS_VIOLATION - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s. This is not of much help to me.
In my experience that means that your data is corrupted.
I hope these additional bits of information can help someone figuring out a solution to get my cluster up and running again.
PS. I was thinking of reinstalling PGSQL over my current install but keeping my PGDATA. I've done it in the past for fixing problems with starting the service and it worked. What do you think?
You could try it, but as Guillaume Drolet mentioned I don't see this helping.
Since this is happening on your original database, I suspect that's what's been corrupted. In my experience, this means you either have faulty hardware, or there's a misconfiguration that means fsync isn't doing what it's supposed to do.
For those interested, I reinstalled the PGSQL binaries over, keeping my PGDATA and tablespace. It stopped the crashes mentioned in the previous posts, at least for now. We'll see if the crashes come back.
-- Jim Nasby, Data Architect, Blue Treble Consulting Data in Trouble? Get it in Treble! http://BlueTreble.com