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what is the impact of temp_headers full on a query .

edited Oct 9, 2017 10:00AM in SQL Performance (MOSC) 5 commentsAnswered

Hi All,

Could you kindly tell me  the importance of temp_space_header view and why  is the byte_free shows 0 when it shows space in the dba_temp_free_space

Couple of times I noticed when query is running slow, I check the temp_space_hearder , see the bytes_free column showing 0  where as  at the same time  when  I query dba_temp_free__space I see free_space . If I add some more temp files the query will run faster . When I query temp_space_header after adding temp file , it shows bytes_free column  with the size of the temp file.

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