BUG #16618: XX000: cache lookup failed for function

From: PG Bug reporting form <noreply(at)postgresql(dot)org>
To: pgsql-bugs(at)lists(dot)postgresql(dot)org
Cc: meyerm1(at)gmail(dot)com
Subject: BUG #16618: XX000: cache lookup failed for function
Date: 2020-09-16 07:18:52
Message-ID: 16618-ee60f707532df7a8@postgresql.org
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The following bug has been logged on the website:

Bug reference: 16618
Logged by: Michael Meyer
Email address: meyerm1(at)gmail(dot)com
PostgreSQL version: 11.9
Operating system: Windows 10
Description:

While trying out the npgsql auto-prepare feature, which in the background
prepares a statement after it has been executed a number of times, I
sometimes see this error when running some of our integration test suites.
These drop some schema and rebuild it from time to time, I'd suspect that
there may be a problem with a function invocation prepared, schema dropped,
and that prepared function invocation reused.
No simple repro yet, I may try to provide one on request.

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