http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=15406 Bug ID: 15406 Summary: Very SLOW OAI server performance Change sponsored?: --- Product: Koha Version: 3.20 Hardware: All OS: All Status: NEW Severity: enhancement Priority: P5 - low Component: Web services Assignee: koha-bugs@lists.koha-community.org Reporter: dhd.koha@gmail.com QA Contact: testopia@bugs.koha-community.org I noticed a very slow performance on oai server koha version 3.22 ! In particular the query ( SELECT biblioitems.biblionumber, biblioitems.timestamp, marcxml FROM biblioitems JOIN oai_sets_biblios ON biblioitems.biblionumber = oai_sets_biblios.biblionumber WHERE timestamp >= '1970-01-01 00:00:00' AND timestamp <= '2015-12-22 23:59:59' AND oai_sets_biblios.set_id = '4' ) UNION ( SELECT deletedbiblio.biblionumber, null as marcxml, timestamp FROM deletedbiblio JOIN oai_sets_biblios ON deletedbiblio.biblionumber = oai_sets_biblios.biblionumber WHERE DATE(timestamp) >= '1970-01-01T00:00:00Z' AND DATE(timestamp) <= '2015-12-22T23:59:59Z' AND oai_sets_biblios.set_id = '4' ) ORDER BY biblionumber LIMIT 51 OFFSET 0 As constructed by oai.pl Requires about a minute to get results for each fetch! So according to my rough calculations a 500K marcs catalogue would require about 6 days to be harvested! Harry! -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.