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If a future main release at any time variations the information storage structure in a means which makes the previous facts format unreadable, pg_upgrade will not be usable for such updates. (The Neighborhood will try and stay away from these kinds of scenarios.)
put in exactly the same extension shared object information on the new standbys that you choose to set up in The brand new Main cluster.
NET halt postgresql-16 Streaming replication and log-shipping and delivery standby servers must be operating in the course of this shutdown so that they obtain all alterations.
important PostgreSQL releases on a regular basis increase new functions that often alter the format of your system tables, but The inner details storage format hardly ever alterations. pg_upgrade works by using this reality to accomplish speedy upgrades by developing new technique tables and easily reusing the old consumer info data files.
use link manner, do not need or tend not to need to use rsync, or want A better Answer, skip the Guidelines During this segment and easily recreate the standby servers after pg_upgrade completes and The brand new Major is managing.
when rsync have to be operate on the main for at minimum a person standby, it is possible to operate rsync on an upgraded standby to up grade other standbys, provided that the upgraded standby hasn't been started.
pg_upgrade launches short-lived postmasters while in the outdated and new info directories. Temporary Unix socket documents for communication with these postmasters are, by default, produced in The present Doing the job directory. In some situations the path identify for The existing directory may very well be way too extended to be a sound socket identify.
You should use the same port amount for the two clusters when performing an update because the outdated and new clusters won't be jogging simultaneously. even so, when examining an outdated functioning server, the outdated and new port figures have to be diverse.
Make the new PostgreSQL resource with configure flags that are suitable While using the outdated cluster. pg_upgrade will Check out pg_controldata to be sure all configurations are compatible before starting the improve.
If an error takes place whilst restoring the database schema, pg_upgrade will exit and you will need to revert for the outdated cluster as outlined in stage 17 underneath. To try pg_upgrade once more, you have got to modify the website aged cluster Therefore the pg_upgrade schema restore succeeds.
confirm the “most recent checkpoint site” values match in all clusters. Also, make sure wal_level is just not set to minimal from the postgresql.conf file on the new Major cluster.
In the event your set up Listing just isn't version-distinct, e.g., /usr/community/pgsql, it is necessary to move The present PostgreSQL put in Listing so it doesn't interfere With all the new PostgreSQL installation.
psql --username=postgres --file=script.sql postgres The scripts can be run in any buy and can be deleted at the time they are already operate.
For Windows customers, you should be logged into an administrative account, and then start a shell since the postgres user and established the appropriate route:
the new PostgreSQL executable Listing; default is definitely the directory where pg_upgrade resides; natural environment variable PGBINNEW