On 2019-Feb-23, Tom Lane wrote: > However, if someone held a gun to my head and said fix it, I'd be inclined > to do so by having temp-namespace creation insert a "pin" dependency into > pg_depend. Arguably, the only reason we don't create all the temp > namespaces during bootstrap is because we aren't sure how many we'd need > --- but if we did do that, they'd presumably end up pinned.
Is there a problem if we start with very high max_backends and this pins a few thousands schemas that are later no longer needed? There's no decent way to drop them ... (I'm not sure it matters all that much, except for bloat in pg_namespace.) How about hardcoding a pin for any schema that's within the current max_backends? -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
