Database hangs: "gc buffer busy acquire/release" and "gc current block busy" pointing to the tempfile block #2 (Doc ID 2192851.1)

Last updated on OCTOBER 13, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Information in this document applies to any platform.

Symptoms

o 4-node 11.2.0.4 RAC with a single 1TB size tempfile

o Sometimes query hangs with sessions waiting for 'gc' waits:

 

o 45 PQ slaves being used for the query, 12 on instances 1,2 and 3, and 9 slaves on instance 4.

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms