Reports may consume too much resources of the db. To avoid that a new config param
'report_sql_max_statement_time_seconds' was created, which sets the maximum time a report statement may
take to execute in seconds. If it takes longer it will be aborted.
reflowed the code, so that is is executed after is_sql_valid, and put
the code in a subroutine
Test plan:
0. if you run this test in ktd you should check if you are running
mysql or mariadb, and then be able to switch database
1. create a new report by going to
More > Reports > New SQL Report
(/cgi-bin/koha/reports/guided_reports.pl?op=add_form_sql)
enter the following SQL (which only purpose is to run long)
select ExtractValue(bm1.metadata,'//controlfield[@tag="001"]')
from biblio_metadata bm1
join biblio_metadata bm2 on
ExtractValue(bm1.metadata,'//controlfield[@tag="001"]') =
ExtractValue(bm2.metadata,'//datafield[@tag="773"]/subfield[@code="w"]')
give the Report a name eg "extract_long"
2. run the report
3. report should be executed and return several 1000 lines on ktd
4. apply patch
5. add a the parameter to koha-conf.xml to the <config> </config> part
<report_sql_max_statement_time_seconds>0.001</report_sql_max_statement_time_seconds>
OR use the following statemtn
sed -i '/<biblioserver>/a <report_sql_max_statement_time_seconds>0.001<\/report_sql_max_statement_time_seconds>' /etc/koha/sites/kohadev/koha-conf.xml
6. restart koha
koha-plack --restart kohadev
7. go back to the report page and rerun report which now should lead to an error
The following error was encountered:
The database returned the following error:
Query execution was interrupted, maximum statement execution time exceeded
Please check the log for further details.
8. in koha-conf.xml set
<report_sql_max_statement_time_seconds>20</report_sql_max_statement_time_seconds>
9. restart koha
10. rerun query, which now should execute as before
11. stop ktd, and restart with the "other" database
DB_IMAGE=mysql:8.0 ktd up
DB_IMAGE=mariadb:10.5 ktd up
12. repeat from step 1 (omit applying the patch)
13. Sign off
14. Thx
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
07ee120d50