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Optimizer Ignoring the Hint USE_NL(A,B) in 19c (Doc ID 2883208.1)

Last updated on JULY 20, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 19.13.0.0.0 and later
Information in this document applies to any platform.

Symptoms

19c Optimizer Ignoring the Hint If using as mentioned below.

Select /*+ ORDERED USE_NL(A,B) */ ........

 

We do see these lines from Execution Plan.

U - USE_NL(A,B) / rejected by IGNORE_OPTIM_EMBEDDED_HINTS >>>>

13 - SEL$A75CC17B / B@SEL$1
U - USE_NL(A,B) / rejected by IGNORE_OPTIM_EMBEDDED_HINTS >>>>

Cause

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In this Document
Symptoms
Cause
Solution


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