Hi, after upgrading to version 11, I see the error pattern "found xmin x from before relfrozenxid y" in different databases on different hosts.
From https://www.postgresql.org/docs/10/static/release-10-3.html, I learned that this was an error caused by pg_upgrade, which apparently had been fixed in 10.3. This page also states that refreshing the affected materialized view non-concurrently would fix the problem. My question is now how to infer the affected materialized view from the error message. Is there a way to tell which one to refresh from the xmin or relfrozenxid value? Best Johannes
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