Re: Loop over Cursor stalls for several minutes
"Amaury Forgeot d'Arc" <[email protected]>
| Newsgroups | gmane.comp.python.db.cx-oracle |
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| Message-ID | <CAGmFidaJMNmtnYxWc2Co=dMN3k-7087YGrBZt9957Q771PBYAg@mail.gmail.com> |
2013/4/19 Grzegorz Dąbkowski <[email protected]> > > Could it be the case that the initial time might be in setting up and > > executing the query? Are there joins, order bys, etc? > > Wouldn't that affect cursor.execute() rather than the iteration? It greatly depends on the execution plan. If Oracle decides that the first rows can be returned quickly, it will do so; Now if the fetch array size is 100, the next rows will be retrieved/computed during the fetch operations. -- Amaury Forgeot d'Arc ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ cx-oracle-users mailing list cx-oracle-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org https://lists.sourceforge.net/lists/listinfo/cx-oracle-users