pg เว็บตรง No Further a Mystery
pg เว็บตรง No Further a Mystery
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If a long term important launch at any time variations the information storage structure in a means that makes the previous knowledge structure unreadable, pg_upgrade won't be usable for these upgrades. (The community will try to steer clear of these types of predicaments.)
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If any write-up-update processing is required, pg_upgrade will issue warnings because it completes. It will also generate script documents that have to be operate from the administrator. The script information will connect to Each individual database that desires write-up-upgrade processing. Each individual script ought to be run employing:
The --jobs option permits various CPU cores for use for copying/linking of documents and also to dump and restore database schemas in parallel; a very good location to begin is the maximum of the volume of CPU cores and tablespaces.
use connection mode, don't have or will not choose to use rsync, or want A better Resolution, skip the instructions On this portion and simply recreate the standby servers after pg_upgrade completes and the new Key is working.
although rsync must be operate on the key for at the very least 1 standby, it can be done to operate rsync on an upgraded standby to upgrade other standbys, providing the upgraded standby has not been started.
If the challenge is usually a contrib module, you could possibly should uninstall the contrib module from the outdated cluster and install it in the new cluster following the enhance, assuming the module just isn't getting used to retail outlet person data.
You may also specify consumer and port values, and whether or not you want the data documents connected or cloned instead of the default duplicate behavior.
this feature can radically reduce the time for you to enhance a multi-database server working on a multiprocessor device.
In that case You should utilize the -s choice to place the socket data files in a few directory that has a shorter path identify. For stability, make sure that that Listing isn't readable or writable by every other customers. (This is not supported on Home windows.)
the outdated and new cluster directories on the standby. The Listing structure under the specified directories on the first and standbys must match. talk to the rsync guide website page for details on specifying the remote directory, e.g.,
after you are pleased with the enhance, you could delete the aged cluster's knowledge directories by working the script outlined when pg_upgrade completes.
directory to click here use for postmaster sockets during enhance; default is recent Operating directory; surroundings variable PGSOCKETDIR
when The present PostgreSQL server is shut down, it really is safe to rename the PostgreSQL set up directory; assuming the old directory is /usr/community/pgsql, you can do:
if you wish to use link mode and you don't want your previous cluster for being modified in the event the new cluster is started, consider using the clone manner. If that isn't out there, make a copy with the aged cluster and update that in hyperlink manner. To make a sound duplicate with the outdated cluster, use rsync to create a filthy copy of your aged cluster even though the server is managing, then shut down the old server and operate rsync --checksum once more to update the copy with any changes to make it regular.
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