If your installation directory is not version-specific, e.g., /usr/local/pgsql, it is necessary to move the current PostgreSQL install directory so it does not interfere with the new PostgreSQL installation. The initial data is now represented in Perl data structures, making it much easier to manipulate mechanically. These are the steps to perform an upgrade with pg_upgrade: If you are using a version-specific installation directory, e.g., /opt/PostgreSQL/15, you do not need to move the old cluster. If you are already using PostgreSQL version 13, you do not need to perform this migration. Several existing contrib modules that define data types have been adjusted to install relevant files. Join for inspiration, news about database stuff, this, that and more. to report a documentation issue. If you are migrating from version 12: When the upgrade has successfully completed, you can safely delete the old database directory and reclaim lost disk space. Notes on updating to PostgreSQL 14.3, 13.7, 12.11, 11.16, and 10.21 To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In psql, \d+ now shows the statistics target for indexes. Do not start any servers yet. This is another good reason to upgrade early: the pain is much smaller and it's usually much less work. Upgrade PostgreSQL 9.4 to 11 or 12 #2801 - Github Below you will find a detailed account of the changes between PostgreSQL 11 and the previous major release. If your file system supports file system snapshots or copy-on-write file copies, you can use that to make a backup of the old cluster and tablespaces, though the snapshot and copies must be created simultaneously or while the database server is down. Equivalent functionality is now present in the core backend. Allow bitmap scans to perform index-only scans when possible (Alexander Kuzmenkov), Update the free space map during VACUUM (Claudio Freire). The PostgreSQL Global Development Group has released an update to all supported versions of PostgreSQL, including 14.3, 13.7, 12.11, 11.16, and 10.21. Add casts from JSONB scalars to numeric and boolean data types (Anastasia Lubennikova), Add all window function framing options specified by SQL:2011 (Oliver Ford, Tom Lane). That's just cosmetic for our purposes, as we continue to select the fat mode in pre-v13 branches. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? This greatly reduces the chance of query ID hash collisions. Add an option to suppress dumping and restoring database object comments (Robins Tharakan). Fix to_date(), to_number(), and to_timestamp() to skip a character for each template character (Tom Lane). This is accomplished by having pg_prewarm store the shared buffers' relation and block number data to disk occasionally during server operation, and at shutdown. As side note: are you aware that before Postgres 10, the version numbering was a bit different? If you are running Leap 15.2, use PostgreSQL 12. Avoid failure when SQL function inlining changes the shape of a potentially-hashable subplan comparison expression (Tom Lane), While building or re-building an index, tolerate the appearance of new HOT chains due to concurrent updates (Anastasia Lubennikova, lvaro Herrera).
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