Comments on: Oracle 11g’s Query Result Cache: Introduce Yourself to RC Latches

By: Alex Fatkulin

Alex Fatkulin — Thu, 10 Jun 2010 02:14:43 +0000

Dave,

the situation has drastically improved in 11GR2 but we’re still not there.

You can reference http://afatkulin.blogspot.com/2010/06/11gr2-result-cache-scalability.html for more details.

By: Dave Anderson

Dave Anderson — Tue, 24 Nov 2009 21:47:17 +0000

Thank you Alex, this was very helpful. Looks like it may be fixed in R2:

SQL> select * from job_times;

SID TIME_ELA
———- ———-
31 15936
23 15677
34 15362
36 15576

Elapsed: 00:00:00.03
SQL> select name, gets, misses, sleeps, wait_time
2 from v$latch
3 where name like ‘Result Cache%’;

NAME GETS MISSES SLEEPS WAIT_TIME
———————————– ———- ———- ———- ———-
Result Cache: RC Latch 801875 0 0 0
Result Cache: SO Latch 11 0 0 0
Result Cache: MB Latch 0 0 0 0

Best regards.

By: DBA

DBA — Thu, 26 Feb 2009 16:57:46 +0000

Once you get a hammer, everything to you looks like a nail! ;)

By: Result_cache blocking « OraStory

Result_cache blocking « OraStory — Thu, 13 Nov 2008 16:09:18 +0000

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