Part of the SORT_AREA_RETAINED_SIZE of the UGA in shared server?

Hello

I'm confused.

Here are the notes I made during the expert reading by Tom Kyte Oracle a few years ago.

SORT_AREA_SIZE - the amount of memory to use for sorting. Will be in the PGA
SORT_AREA_RETAINED_SIZE - how much memory is used to store the sorted data. Will be in the UGA

I now see the notes that I did as I was not working with Oracle for quite awhile, and I don't know what is happening in shared server mode.

SORT_AREA_RETAINED_SIZE would still be part of the UGA? Probably not, as S_A_R_S is a subset of S_A_Z, Yes?

Thank you.

>
SORT_AREA_RETAINED_SIZE would still be part of the UGA? Probably not, as S_A_R_S is a subset of S_A_Z, Yes?
>
Since the doc should answer your question
>
SORT_AREA_RETAINED_SIZE specifies (in bytes) the maximum amount of memory of the global area (UGA) user retained after that complete a sort of race. Selected size the size of the buffer control learn that Oracle uses to maintain some of the sort in memory. This memory is released to the UGA, not for the operating system, after the last line is read in the sorting space.

Oracle can allocate sort on several areas of this size for each request. Usually, only one or two kinds occur at the same time, even for complex queries. In some cases, however, additional concurrent sorts are necessary, and each kind has its own memory space. If shared server is used, allowance is BMG until the SORT_AREA_RETAINED_SIZE value is reached. The difference between SORT_AREA_RETAINED_SIZE and SORT_AREA_SIZE is allocated to the PGA.
>
SARS is preserved UGA (first line above) and the difference between SARS and SAS PGA (last line above).

Oracle recommend to use one of these settings more
>
Note:

Oracle does not recommend the use of the SORT_AREA_RETAINED_SIZE parameter, unless the instance is configured with the option of shared server. Oracle recommends enable auto sizing of SQL working areas by setting PGA_AGGREGATE_TARGET instead. SORT_AREA_RETAINED_SIZE is retained for backward compatibility.
>
SORT_AREA_SIZE
http://docs.Oracle.com/CD/B19306_01/server.102/b14237/initparams203.htm

SORT_AREA_RETAINED_SIZE
http://docs.Oracle.com/CD/B28359_01/server.111/b28320/initparams231.htm

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