From jeroen.van.sluisdam@vrijuit.nl Wed, 29 Aug 2001 08:38:41 -0700 From: Jeroen van Sluisdam Date: Wed, 29 Aug 2001 08:38:41 -0700 Subject: help execution plan changes when using a dblink Message-ID: MIME-Version: 1.0 Content-Type: text/plain Hi, We face the strange problem that an executionplan is changed recently without any reason. Now it runs with a full_table scan and it did not do so. The query is executed through a dblink and is part of a batch. - nothing has been changed recently in the app everybody agrees on here, - analyze runs each weekend and a select count(*) differs slightly between num_rows in dba_tables for the specific table - when executing the query manually in two parts the subquery first and ten the value returned hardcoded in the main-query it performs very good - when I ask for an explain plan in the database the link points to the explain plan says it uses an index Details: oracle 7.3.4, hp-ux 10.20 Query: select * from debtor_claims@deca_link where debtor_claim_id = ( select max(debtor_claim_id) from debtor_claims@deca_link where res_id = 17777291 and counter_booking_flag = 'N' ) Tia, Jeroen -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Jeroen van Sluisdam INET: jeroen.van.sluisdam@vrijuit.nl Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).