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see ORA-12699
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RE: dba_extents view in Oracle 10.2.0.2

genegurevich

2006-07-31

Replies:
Sorry if this is a duplicate post.

I got a workaround from oracle - create a new view called dba_extents_wa
and use it instead of dba_extents.
Our EDS team confirmed that the performance was indeed better using
dba_extents_wa view (compared
with old dba_extents). Oracle did not recommend to replace the dba_extents
because - as I understood -
they have not tested this new view completely. I can post the SQL to create
dba_Extents_wa if anyone is
interested.

Thanks to all who replied to my posts

Gene Gurevich




                                                 
        "Allen, Brandon"                              
        <Brandon.Allen@(protected)                              
        eNeck.com>                                 To
                         <Dave.Herring@(protected)>,      
        06/26/2006 10:40       <genegurevich@(protected)
        AM                >, "oracle-l"              
                         <oracle-l@(protected)>        
                                               cc
                                                 
                                            Subject
                         RE: dba_extents view in Oracle    
                         10.2.0.2                  
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 




I've had similar problems in 10.2.0.2 recently with a known bug
(Metalink notes 5103126, 4618615 & 5130698) causing slowness with the
following recursive query:

select c.name, u.name from con$ c, cdef$ cd, user$ u where c.con# =
cd.con# and cd.enabled = :v1 and c.owner# = u.user#

- which is executed everytime you (or your app) tries to insert a
duplicate into a unique constraint and triggers ORA-00001. This can be
a big problem if you have an app that tries to do this regularly.
Anyway, the workaround was to delete stats on cdef$, user$ and con$ and
lock them. So far, this has cleared up the problem with no known side
effects.

Regards,
Brandon

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