After you have patched init parameters
Version of the database: 10.2.0.4 Patch 45 on Windows 20031. documentation says to resolve the value '_first_spare_parameter' 6904068 bug. What should be the value if we actually see this bug occurring after you apply the hotfix. How can we determine that we need this setting to be turned on?
2. How can we determine that we must define "_third_spare_parameter"? How can we check if there is a regression on the log files?
No, the mentioned parameter '_first_spare_parameter' just NOT and NOT lone operative. It will work as expected only when the Patch 6904068 is applied.
Description of the main problem:
Excessive CPU consumption when the mutex for slider axis has been activated. Testicles made on this matter, consisting of the repeated execution of a
and and the same SQL statement by multiple sessions simultaneously. They will all support for the mutex of mode S child cursor. If the mutex cannot be obtained
After a few times of spinning, kgx calls a customer provided wait function. For the slider S mutex, the wait function (kksLockWait) was actually yield the CPU
rather than wait for a fixed time. For this particular unit test, given the number of processors available and the fact that the process had little to others
that run this SQL, call performance apparently does not provide enough time and the end result is that the processes were constantly spinning and
the consumption of CPU, trying to get the mutex. This problem is the result of combined factors - the repeated execution of the same simplistic SQL top
number of simultaneous sessions that running SQL and do not do anything else, large number of processors on the computer and perhaps other factors as well. This
the combination is probably unlikely to happen in any real life application scenario, although this client insisted that their unit test was representative of their
real-world application.
Description of the fix: in kksLockWait(), now wait for a period fixed instead of give up trying to get the mutex in S mode and there is no holder of X.
By forcing a period much more long wait between attempts to get mutex (compared to "yield"), the unit test has been found to consume much less CPU and
delivered at rates higher than the old latch implementation
The time-out period is controlled by a parameter. The parameter as it comes in unique pieces is called "_first_spare_parameter" and takes an integer
a value that represents the time-out in CENTIseconds (1cs = 10ms). The default value of 0 will retain the current behavior (ie the cPU performance). The value can be
dynamically adjusted to the level of the SYSTEM, but not at the level of the SESSION.
Tags: Database
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Repost...
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... I guess that clearing the browser cache does not erase 'downloaded' updates.
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C:\Windows\Debug\ MRT. NEWSPAPER <> >
Related...
... This leaves us with the malicious software removal tool don't appear not.
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It's no wonder that you ended up having to do a clean install of Win98SE & then upgrade to Windows XP again!
================================================================
[1] full Disclosure: the difficulty operating in AGGRESSIVE mode will remove your update history but not updates installed in Add/Remove Programs list. -
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