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Query that executes normally consumes too much CPU when used inside a procedure

edited Apr 5, 2018 5:00AM in SQL Performance (MOSC) 5 commentsAnswered

Greetings,

I have a database in a server with Oracle 11g Standard Edition, where I have a query that shows about 7K rows in about 13 seconds.

This query executes normally, but when put into a procedure, it behaves differently, consuming about 100% of CPU and not ending for more than 20 minutes. I haven't been able to see it to the end because the process has to be killed in order to free resources in the server.

This is the query:

Header 1

SELECT

CASE

      WHEN  I.IN_CREATION_USER= to_char(I.IN_PROVIDER_RUC_CK) THEN 'E'

WHEN  I.IN_CREATION_USER= to_char(I.IN_ACQ_RUC) THEN 'A'

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