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if RULE BASE exists in 11G [message #297499]

Fri, 01 February 2008 02:48

lioracle
Messages: 68
Registered: February 2008
Location: Israel

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thanks

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Re: if RULE BASE exists in 11G [message #297501 is a reply to message #297499]

Fri, 01 February 2008 02:54

Michel Cadot
Messages: 35462
Registered: March 2007
Location: Nanterre, France, http://...

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Yes.

SQL> @v

Version Oracle : 11.1.0.6.0

SQL> set autotrace traceonly explain
SQL> select /*+ RULE */ * from t;

Execution Plan
----------------------------------------------------------
Plan hash value: 1601196873

----------------------------------
| Id  | Operation         | Name |
----------------------------------
|   0 | SELECT STATEMENT  |      |
|   1 |  TABLE ACCESS FULL| T    |
----------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

But should you use it? No.

Regards
Michel

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