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Why my query is using direct path read (No parallel option is using) and it is also skipping indexes

edited Jul 17, 2014 9:19AM in SQL Performance (MOSC) 2 commentsAnswered

Hi,

My database version is : 11.2.0.1.0 Enterprise edition,

OS version is : Red hat linux 4.1.2

I have a table 300 GB of size and the table is monthly range partitioned, Also created a global range partitioned index on the table.

Tables stats are upto date, index was created recently, we are using memory_target with 15G.

when i am running force index the query elapsed time is incresing, as per AWR, the query is using direct path read (Skipping SGA).

do let me know why this is skipping SGA.

Regards,

RAMA

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