24 Oct 2022
Koha is the first free and open source software library automation package (ILS). Development is sponsored by libraries of varying types and sizes, volunteers, and support companies from around the world. The website for the Koha project is:
Koha 21.05.20 can be downloaded from:
Installation instructions can be found at:
Koha 21.05.20 is a bugfix/maintenance release with security fixes.
It includes 1 security fixes, 2 bugfixes.
You can learn about the system components (like OS and database) needed for running Koha here: https://wiki.koha-community.org/wiki/System_requirements_and_recommendations
[29325] commit_file.pl error 'Already in a transaction'
This fixes the command line script misc/commit_file.pl and manage staged MARC records tool in the staff interface so that imported records are processed.
The error message from The command line script was failing with this error message "DBIx::Class::Storage::DBI::exectxn_begin(): DBI Exception: DBD::mysql::db begin_work failed: Already in a transaction at /kohadevbox/koha/C4/Biblio.pm line 303". In the staff interface, the processing of staged records would fail without any error messages.
The Koha manual is maintained in Sphinx. The home page for Koha documentation is
As of the date of these release notes, the Koha manual is available in the following languages:
The Git repository for the Koha manual can be found at
Complete or near-complete translations of the OPAC and staff interface are available in this release for the following languages:
Partial translations are available for various other languages.
The Koha team welcomes additional translations; please see
For information about translating Koha, and join the koha-translate list to volunteer:
The most up-to-date translations can be found at:
The release team for Koha 21.05.20 is
Release Manager: Tomás Cohen Arazi
Release Manager assistants:
QA Manager: Katrin Fischer
QA Team:
Topic Experts:
Bug Wranglers:
Packaging Manager: Mason James
Documentation Manager: David Nind
Documentation Team:
Translation Managers:
Wiki curators:
Release Maintainers:
We thank the following individuals who contributed patches to Koha 21.05.20
We thank the following libraries, companies, and other institutions who contributed patches to Koha 21.05.20
We also especially thank the following individuals who tested patches for Koha
We regret any omissions. If a contributor has been inadvertently missed, please send a patch against these release notes to koha-devel@lists.koha-community.org.
The Koha project uses Git for version control. The current development version of Koha can be retrieved by checking out the master branch of:
The branch for this version of Koha and future bugfixes in this release line is 21.05.x.
Bug reports and feature requests can be filed at the Koha bug tracker at:
He rau ringa e oti ai. (Many hands finish the work)
Autogenerated release notes updated last on 24 Oct 2022 16:10:24.