Use compatible initdb flags that match the old cluster. It contains several important points to consider: You need to use the same Postgres initdb options that were used when you ran initdb for Postgres 14.įor example, if you used the helpful data checksums feature, you need to pass the -k option to initdb, which is done indirectly via the RPM-specific postgresql-15-setup script like ~]# /usr/pgsql-15/bin/postgresql-15-setup initdbĪt this point you could start the PostgreSQL 15 server and use psql to connect to it, if you want to start with an empty database or otherwise load your data by the usual means such as with psql or pg_restore using output from pg_dump.īut if you want to convert all of your existing PostgreSQL 14 cluster’s data so everything comes over as is, you can now run pg_upgrade.įor any important system, back up your data before doing anything else, and read through the whole pg_upgrade manual. Now that we have the new PostgreSQL version installed, we can create the new database cluster. 86_64Ĭreate the new PostgreSQL 15 database cluster Package Architecture Version Repository Size Last metadata expiration check: 2:29:14 ago on Fri 09:01:38 AM MDT. We are doing system administration work here, so let’s act as system administrators and work as the root user rather than using sudo ~]# dnf install postgresql15-server postgresql15-devel postgresql15-contrib Things will be very similar on other Red Hat family members. My examples are done on the Fedora 36 x86_64 OS. are not using dnf modularity or the stock distribution postgresql RPMs, but rather the PostgreSQL Global Development Group (PGDG) postgresql14 RPMs that allow simultaneous coexistence of multiple major Postgres versions.are running one of the Red Hat family of Linux operating systems, including Fedora, Red Hat Enterprise Linux (RHEL), Rocky Linux, AlmaLinux, Oracle Linux, or CentOS.This article shows how to upgrade to PostgreSQL 15 if you: Thanks to the PostgreSQL developers for the continuing amazing work! Prerequisites for upgrading And many other performance improvements and feature enhancements.New regular expression functions regexp_count, regexp_instr, regexp_like, and regexp_substr.Optional LZ4 and Zstandard compression for WAL (write-ahead log) files, especially useful for those not using btrfs or zfs filesystem built-in compression.JSON format log output (to files only, not syslog).Logical replication publisher options to include all tables in a schema (including those added in the future), row filtering and column lists, and simplified conflict management.SQL-standard MERGE syntax that can include INSERT, UPDATE, and DELETE actions in a single statement.In-memory statistics collection (removing the statistics collector process).Yesterday PostgreSQL 15 was released! It includes a number of headline features since version 14 that make it worth upgrading your databases running earlier versions of PostgreSQL:
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