Parallel Query hangs due to "PX Deq: Join ACK" on RAC

(Doc ID 2223443.1)

Last updated on JANUARY 18, 2017

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.2]
Oracle Database - Enterprise Edition - Version to [Release 12.1]
Microsoft Windows x64 (64-bit)


Parallel Query may not complete, and Query Cordinator(QC) process waits for "PX Deq: Join ACK" when following all conditions are met.

And following messages appear in event log of MsLbfoProvider when this problem happens.

WARNING 2017/1/1 00:00 Microsoft-Windows-MsLbfoEventProvider 8
NONE Failing NBL send on TeamNic 0xffffe0014dbd6010



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