Parallel Queries Seem to Hang with Slaves Waiting for PX Deq Credit: Send Blkd and PX Deq: Table Q Normal (Doc ID 1925953.1)

Last updated on JUNE 28, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Parallel queries seem to be hanging/extremely slow with a combination of slave waits for "PX Deq Credit: Send Blkd" and "PX Deq: Table Q Normal."

Cause

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