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Slow Extent Allocation For Partitioned Compressed Table Causing Slowdown With enq: TX - contention And L1 validation Wait Events (Doc ID 2488646.1)

Last updated on MARCH 12, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Slow extent allocation for partitioned compressed table causing slowdown with enq: tx - contention and l1 validation wait events
When it happens, most of PX slaves wait for "TX - contention" and stack for blockers (PX slaves as well) contains ktsp_bump_hwm, which means we are trying to extend the segment to get new space and are on CPU


e.g.

  

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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