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 DECEMBER 10, 2023
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.4 and laterOracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A 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
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |