Database Networking (MOSC)

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complete refresh and network

edited Aug 3, 2009 10:12AM in Database Networking (MOSC) 2 comments
Hi ,

 

      Recently I encountered performance issue when I performed complete refresh for snapshots .

      I did 3 test , the 1 st and 2 nd run much faster than 3 rd , though 1 st and 2 nd are DDL , they made less undo/redo than 3 rd , but it didn’t explain why the elapsed times were so different .

      After investigating , I guess the cause was SQL*Net roundtrips to/from dblink .

      Did you face such a issue ? Are there any parameters/approaches we can reduce the round trips between master and snapshot when doing complete fresh ? or please share me if you think the root cause is something else .

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