5 Easy Facts About pg เว็บตรง Described
5 Easy Facts About pg เว็บตรง Described
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If a long term main launch at any time modifications the data storage structure in a method that makes the previous facts structure unreadable, pg_upgrade will not be usable for these types of upgrades. (The community will try and stay clear of this sort of predicaments.)
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Web halt postgresql-sixteen Streaming replication and log-delivery standby servers will have to be running during this shutdown in order that they obtain all modifications.
If you employ connection method, the improve are going to be considerably faster (no file copying) and use significantly less disk space, but you will not manage to obtain your outdated cluster as soon as You begin the new cluster once the update. Link manner also involves the aged and new cluster facts directories be in the exact same file method.
use connection manner, do not have or do not desire to use rsync, or want A better Remedy, skip the Guidelines On this segment and easily recreate the standby servers at the time pg_upgrade completes and The brand new Key is working.
although rsync have to be run on the principal for at minimum a single standby, it is achievable to run rsync on an upgraded standby to enhance other standbys, as long as the upgraded standby has not been click here started off.
If the problem can be a contrib module, you would possibly should uninstall the contrib module through the outdated cluster and put in it in the new cluster after the improve, assuming the module will not be getting used to shop person facts.
You can also specify person and port values, and regardless of whether you would like the info information linked or cloned rather than the default duplicate conduct.
Construct the new PostgreSQL resource with configure flags which are suitable While using the aged cluster. pg_upgrade will Look at pg_controldata to verify all configurations are suitable before beginning the enhance.
What this does would be to history the one-way links established by pg_upgrade's backlink method that join data files inside the outdated and new clusters on the main server. It then finds matching files from the standby's outdated cluster and generates links for them during the standby's new cluster.
the aged and new cluster directories about the standby. The Listing composition underneath the required directories on the first and standbys will have to match. talk to the rsync handbook webpage for facts on specifying the distant directory, e.g.,
when you are content with the enhance, you are able to delete the previous cluster's knowledge directories by jogging the script stated when pg_upgrade completes.
Listing to employ for postmaster sockets during update; default is latest Doing the job directory; natural environment variable PGSOCKETDIR
If the thing is nearly anything in the documentation that is not appropriate, won't match your encounter with the particular function or requires further more clarification, you should use this manner to report a documentation situation.
the new PostgreSQL executable directory; default is definitely the Listing where by pg_upgrade resides; ecosystem variable PGBINNEW
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