Duplicate key insert attempts into oc_preferences database object

reported_bug
9.1.x
help

#1

Please help us by providing the following info. Before posting please also check the pinned "Known issues" threads and make sure that you're running the latest available version for your oC release: https://owncloud.org/changelog/

Steps to reproduce
1. Log into owncloud
2.
3.

Expected behaviour
No duplicate key value violation errors should be logged into the pg_log file

Actual behaviour
Experiencing hundreds of insert statements into the oc_perferences object that continue to fail due to tuples already existing.

< 2016-08-16 04:57:05.279 CDT >STATEMENT: INSERT INTO "oc_preferences" ("userid", "appid", "configkey", "configvalue") VALUES($1, $2, $3, $4)
< 2016-08-16 04:57:05.388 CDT >ERROR: duplicate key value violates unique constraint "oc_preferences_pkey"
< 2016-08-16 04:57:05.388 CDT >DETAIL: Key (userid, appid, configkey)=(80fc9055-7cad-4d34-ad44-a0f19e3a4b8a, user_ldap, displayName) already exists.

Server configuration
Operating system: CentOS
Web server:
Database: Postgresql 9.4
PHP version:
ownCloud version (see ownCloud admin page): 9.x
Updated from an older ownCloud or fresh install: Fresh installation using seeded data.
ownCloud log (data/owncloud.log, see https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808):

Special configuration (external storage, external authentication, reverse proxy, server-side-encryption):

Integrity status for oC9+

Login as admin user into your ownCloud and access
http://example.com/index.php/settings/integrity/failed
paste the results here.

#2

Hi,

there are three open issues about that reported to the bugtracker. If one of this issues are matching your problem and you can provide additional infos please do that at one of these: