Slow performance with Oracle accessing the data dictionary

If you're having some performance issues accessing the data dictionary on common tasks like create user, create synonyms, etc. It might be a problem with the statistics.
We're not supposed to "re gathered" the statistics with Oracle 10G but sometimes there's no other choices.

• First, remove the statistics:
  execute dbms_stats.delete_schema_stats('SYS');
  
• Then recreate them:
  execute dbms_stats.gather_schema_stats('SYS');
  

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