If you're not supposed to analyze SYS and SYSTEM then 
can anyone explain why the 
DBMS_STATS.GATHER_DATABASE_STATS procedure does?

We have run into scenarios where the data dictionary 
becomes almost unusable until SYS gets analyzed again 
via this procedure. I.e. can't describe v$ views, 
selects against v$ views take forever to return 
results, etc.

The obvious solution is to not use this particular 
procedure but it still begs the question WHY doesn't 
it exclude SYS and SYSTEM? Are there any reasons why 
you would want to analyze these schemas?

Thanks.
-w

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Author: Walter K
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