Do not get information on costs when using / * + RULE * / in Toad 9.5

Hello

All while optimizing a query when using / * + RULE * / in the query I get no info for the cost and cardinality.
Can you tell me is the / * + RULE * / obsolete in oracle or what can be the reason.


Help me..

Thanks in advance.

948707 wrote:
Hello

All while optimizing a query when using / * + RULE * / in the query I get no info for the cost and cardinality.
Can you tell me is the / * + RULE * / obsolete in oracle or what can be the reason.

Why do you use this suspicion?

In addition to the fact that the basic optimization rule is obsolete, the optimizer can either make rule base optimization or cost optimization. Why wait get based cost information when using the basic optimization rule?

Do not use these tips. Optimisation cost function is far superior to the basic rule.

Tags: Database

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