Redo Copy Latch contention ??

From: Reddy, Madhusudana <Madhusudana.Reddy_at_bestbuy.com>
Date: Wed, 02 Jul 2003 09:01:02 -0700
Message-ID: <F001.005BE845.20030702084053@fatcity.com>

Hello ALL,

Do you guys think we have redo copy latch contention ?? Also what are your suggestions on tuning Redo Copy Latch ??

                                        SUBSTR(LN.NAME,1,20)            GETS           
         MISSES  IMMEDIATE_GETS IMMEDIATE_MISSES
                                        -------------------- ----------         
----------              -------------- ----------------
                                        redo allocation                         
943350646       8862115         0                               0
                                        redo copy                                      
 22097                   497             907958724               1592481

                                        14:54:54 SQL> select (497/22097)*100 from dual;

                                        (497/22097)*100   ~ (misses/gets)*100
                                        ---------------
                                              2.2491741   <------- Oracle suggests it

should be under 1%

Madhu Reddy
X13944

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Author: Reddy, Madhusudana
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