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tonyhasler.wordpress.com
| | nenadnoveljic.com
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| | A boundary condition where subpartition statistics gathering can also trigger partition statistics
| | dioncho.wordpress.com
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| | One of my colleagues sent following test case, of which he couldn't control the join order with hints. 1. Create objects - table t1, t2 and t3 2. Now Let's set the join order as T1->T2->T3, using global hints convention. But it seems that Oracle does not work as expected. It really seems that the...
| | mauro-pagano.com
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| | Every once in a while I look around the list of new (fixed) views in the instance trying to find useful / interesting things to add to SQLd360 and recently I stumbled into V$SQL_DIAG_REPOSITORY / V$SQL_DIAG_REPOSTIORY_REASON. SQL> desc v$sql_diag_repository Name Null? Type ------------------ -------- ------------- ADDRESS RAW(8) CON_ID NUMBER HASH_VALUE NUMBER SQL_ID VARCHAR2(13) CHILD_NUMBER NUMBER...
| | hourim.wordpress.com
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| I like very much Tanel Poder snapper and Carlos Sierra SQLTXPLAIN. They represent valuable performance diagnostic tools. Unfortunately I am still waiting to find a customer site where I will be allowed or granted necessary privileges to install and to use them. There are client sites where I have been asked to tune queries without...