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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>We have over 15,000 rows in the database and we need to apply the rules on this data. We are thinking of doing the following.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:24.75pt;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Read the data from the database in batches<o:p></o:p></p><p class=MsoListParagraph style='margin-left:24.75pt;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Create beans for the data that we just read<o:p></o:p></p><p class=MsoListParagraph style='margin-left:24.75pt;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>c.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Run the rules on the beans (this results in setting some attributes on the bean)<o:p></o:p></p><p class=MsoListParagraph style='margin-left:24.75pt;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>d.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Save the beans back to the database <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>As you can see, there is some overhead in reading the data from the database, performing the OR mappings, and writing the data back to the database. Is there a way to avoid some of these steps? Can you please suggest some techniques that we can use to improve the performance? Also, I was wondering whether we can configure Drools to operate directly on the data in the database.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal>Bhaskar<o:p></o:p></p></div></body></html>