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savvinov.com
SQL tuning is the key to database performance tuning, and yet this seems to be a "blind spot" for many database specialists. I think it's probably because it falls right on the boundary between DBA's and developer's responsibilities: so while a DBA expects database developers take care of performance while developing code, developers often neglect... |
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iusoltsev.wordpress.com
465 ?! SELECT A.ID, A.LOGIN, A.NAME, A.LASTNAME, A.EMAIL FROM ACCOUNT A WHERE (A.LOGIN LIKE '%%') AND (A.NAME LIKE '%?%' OR A.LASTNAME LIKE '%?%') AND A.COMPANY_ID = 1 ORDER BY A.LOGIN ?, ? ? A.COMPANY_ID = 1 ? SQL> SELECT 'ALL' as "Condition", count(*) FROM ACCOUNT... |
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leonotes.wordpress.com
transitive closure?Wiki?Oracle?... |
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afatkulin.blogspot.com
Most people are aware of the implication hot backup puts on your redo stream. They'll tell you that on first modification Oracle will dump t... |
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