The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/18/routine-vacuuming.html Description:
Hi All, Doc ref: https://www.postgresql.org/docs/current/routine-vacuuming.html#ROUTINE-VACUUMING There are five points under this section; "In this condition any transactions already in progress can continue, but only read-only transactions can be started. Operations that modify database records or truncate relations will fail. The VACUUM command can still be run normally. Note that, contrary to what was sometimes recommended in earlier releases, it is not necessary or desirable to stop the postmaster or enter single user-mode in order to restore normal operation. Instead, follow these steps:..." In the third point it says "Use pg_stat_replication to find slots where age(xmin) or age(catalog_xmin) is large. In many cases, such slots were created for replication to servers that no longer exist, or that have been down for a long time." However, those columns, ie: xmin and catalog_xmin exists in pg_replication_slots metadata view. : https://www.postgresql.org/docs/18/view-pg-replication-slots.html Not in the pg_stat_replication. Please check if my observation is correct or not. Thanks.
