On 04/14/2016 07:28 PM, David Steele wrote:
As far as I know pg_dump share locks everything before it starts so
there shouldn't be issues with concurrent DDL.  Try creating a new
inherited table with FKs, etc. during a pg_dump and you'll see lots of
fun lock waits.


I am pretty sure that it does not lock functions, types or casts. So if you rename a function during pg_dump there should be a risk of getting a backup which will fail on restore.

Andreas



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