Query Intermittently Spins on CPU in Function kkscsFindMatchingRange() (Doc ID 1949350.1)

Last updated on FEBRUARY 03, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 to 12.1.0.2 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Query intermittently spins on CPU, but most of the time runs OK without spinning.
The execution plan is good and does not change when the problem is hit.
Errorstacks of the spinning process show that it is stuck in the function kkscsFindMatchingRange(). Call stack in the trace file :

No actual changes.

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Symptoms

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