{"id":304,"date":"2012-09-09T10:30:01","date_gmt":"2012-09-09T08:30:01","guid":{"rendered":"http:\/\/jal-bs.de\/blog\/?p=304"},"modified":"2012-09-11T10:42:05","modified_gmt":"2012-09-11T08:42:05","slug":"oracle-parameter-_small_table_threshold-full-table-scan-verhalten","status":"publish","type":"post","link":"https:\/\/jal-bs.de\/blog\/?p=304","title":{"rendered":"Oracle Parameter: _small_table_threshold : Full-table-scan Verhalten"},"content":{"rendered":"

Oracle versucht beim Full-table-scan den optimalen I\/O-Weg zu finden. Entweder direkt via dem buffer-cache oder via direct-load von der Festplatte.<\/p>\n

Mit dem Parameter „_small_table_threshold“ ist standardm\u00e4ssig festgelegt, dass bei einer Tabellengr\u00f6sse \u00fcber 2% des buffer-caches mittels direct-load die Tabelle von der Festplatte gelesen und verarbeitet.<\/p>\n","protected":false},"excerpt":{"rendered":"

Oracle versucht beim Full-table-scan den optimalen I\/O-Weg zu finden. Entweder direkt via dem buffer-cache oder via direct-load von der Festplatte. Mit dem Parameter „_small_table_threshold“ ist standardm\u00e4ssig festgelegt, dass bei einer Tabellengr\u00f6sse \u00fcber 2% des buffer-caches mittels direct-load die Tabelle von … Weiterlesen →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=\/wp\/v2\/posts\/304"}],"collection":[{"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=304"}],"version-history":[{"count":2,"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=\/wp\/v2\/posts\/304\/revisions"}],"predecessor-version":[{"id":308,"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=\/wp\/v2\/posts\/304\/revisions\/308"}],"wp:attachment":[{"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jal-bs.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}