Few extensions, pg_stat_statements not available

From: Mauricio Fernandez <mmauricio(dot)fernandez(at)gmail(dot)com>
To: Pgsql-admin <pgsql-admin(at)lists(dot)postgresql(dot)org>
Subject: Few extensions, pg_stat_statements not available
Date: 2025-03-26 20:58:29
Message-ID: CAMdfv4UcNc7pY5RL-BCq+9LHJA-7h1L6T1AGQRHh6Yy3PGUshg@mail.gmail.com
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Hi community

I've been investigating about postgresql monitoring tools and I've
installed a couple of extensions: system_stats and pg_stat_monitor.Then I
tried to enable pg_stat_statements and postgresql could no restart because
lack of extension file

FATAL: could not access file "pg_stat_statements": No such file or
directory

I don't know why there are so few extensions available

postgres=# select * from pg_available_extensions;
name | default_version | installed_version | comment

-----------------+-----------------+-------------------+-------------------------------------------------------------------------
plpgsql | 1.0 | 1.0 | PL/pgSQL
procedural language
system_stats | 3.0 | 3.0 | EnterpriseDB
system statistics for PostgreSQL
repmgr | 5.5 | | Replication
manager for PostgreSQL
pg_stat_monitor | 2.1 | | The
pg_stat_monitor is a PostgreSQL Query Performance Monitoring tool.....
(4 rows)

[postgres(at)pgsql01 data]$ ls -l /usr/pgsql-17/share/extension/
total 256
-rw-r--r--. 1 root root 9636 Feb 24 08:25 pg_stat_monitor--1.0--2.0.sql
-rw-r--r--. 1 root root 12017 Feb 24 08:25 pg_stat_monitor--2.0--2.1.sql
-rw-r--r--. 1 root root 11092 Feb 24 08:25 pg_stat_monitor--2.0.sql
-rw-r--r--. 1 root root 377 Feb 24 08:25 pg_stat_monitor.control
-rw-r--r--. 1 root root 658 Feb 18 07:17 plpgsql--1.0.sql
-rw-r--r--. 1 root root 193 Feb 18 07:17 plpgsql.control
-rw-r--r--. 1 root root 136 Nov 22 11:34 repmgr--4.0--4.1.sql
-rw-r--r--. 1 root root 5421 Nov 22 11:34 repmgr--4.0.sql
-rw-r--r--. 1 root root 840 Nov 22 11:34 repmgr--4.1--4.2.sql
-rw-r--r--. 1 root root 5420 Nov 22 11:34 repmgr--4.1.sql
-rw-r--r--. 1 root root 501 Nov 22 11:34 repmgr--4.2--4.3.sql
-rw-r--r--. 1 root root 6125 Nov 22 11:34 repmgr--4.2.sql
-rw-r--r--. 1 root root 486 Nov 22 11:34 repmgr--4.3--4.4.sql
-rw-r--r--. 1 root root 6516 Nov 22 11:34 repmgr--4.3.sql
-rw-r--r--. 1 root root 208 Nov 22 11:34 repmgr--4.4--5.0.sql
-rw-r--r--. 1 root root 6766 Nov 22 11:34 repmgr--4.4.sql
-rw-r--r--. 1 root root 225 Nov 22 11:34 repmgr--5.0--5.1.sql
-rw-r--r--. 1 root root 6513 Nov 22 11:34 repmgr--5.0.sql
-rw-r--r--. 1 root root 344 Nov 22 11:34 repmgr--5.1--5.2.sql
-rw-r--r--. 1 root root 6513 Nov 22 11:34 repmgr--5.1.sql
-rw-r--r--. 1 root root 1910 Nov 22 11:34 repmgr--5.2--5.3.sql
-rw-r--r--. 1 root root 5930 Nov 22 11:34 repmgr--5.2.sql
-rw-r--r--. 1 root root 135 Nov 22 11:34 repmgr--5.3--5.4.sql
-rw-r--r--. 1 root root 6014 Nov 22 11:34 repmgr--5.3.sql
-rw-r--r--. 1 root root 135 Nov 22 11:34 repmgr--5.4--5.5.sql
-rw-r--r--. 1 root root 6014 Nov 22 11:34 repmgr--5.4.sql
-rw-r--r--. 1 root root 6013 Nov 22 11:34 repmgr--5.5.sql
-rw-r--r--. 1 root root 162 Nov 22 11:34 repmgr.control
-rw-r--r--. 1 root root 7685 Nov 22 11:34 repmgr--unpackaged--4.0.sql
-rw-r--r--. 1 root root 8781 Nov 22 11:34 repmgr--unpackaged--5.1.sql
-rw-r--r--. 1 root root 8005 Nov 22 11:34 repmgr--unpackaged--5.2.sql
-rw-r--r--. 1 root root 8089 Nov 22 11:34 repmgr--unpackaged--5.3.sql
-rw-r--r--. 1 root root 27 Mar 20 16:56 system_stats--1.0--2.0.sql
-rw-r--r--. 1 root root 6113 Mar 20 16:56 system_stats--1.0.sql
-rw-r--r--. 1 root root 27 Mar 20 16:56 system_stats--2.0--3.0.sql
-rw-r--r--. 1 root root 6113 Mar 20 16:56 system_stats--2.0.sql
-rw-r--r--. 1 root root 6113 Mar 20 16:56 system_stats--3.0.sql
-rw-r--r--. 1 root root 167 Mar 20 16:56 system_stats.control
-rw-r--r--. 1 root root 373 Mar 20 16:56 uninstall_system_stats.sql
[postgres(at)pgsql01 data]$

I would appreciate any tips or guidance

kind regards

Mauricio Fernández

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