You are trying to upgrade from each major PostgreSQL versions one by one but as per the PostgreSQL documentation you can directly perform the pg_upgrade from any older major version to latest supported version [Link]
Other than pg_upgrade, PostgreSQL supports a couple of other upgradaing mechanisms like 'upgrading data via pg_dumpall',' upgradaing data via Replication'. For more details you can view the official documentation.
We are upgrading from version 10 to 15. We encountered the following error for the first time. Can you give any ideas on how to solve this error? Since it is a system table, we cannot intervene on it.
pg_restore: from TOC entry 3312; 0 0 ACL TABLE "pg_pltemplate" postgres pg_restore: error: could not execute query: ERROR: relation "pg_catalog.pg_pltemplate" does not exist Command was: GRANT SELECT ON TABLE "pg_catalog"."pg_pltemplate" TO "username";
We upgraded many Postgresql in the same way. But this error just blew up somehow. For this cluster, we upgraded 10 to 11 and then 11 to 12 without a problem, but the same error comes after 12 to 13 and 12 to 15.
The other issue is that the check is successful when we check the cluster for the upgrade.
