RAC Instance Hangs with High Percentage of Wait Time on 'latch: row cache objects'
(Doc ID 2207660.1)
Last updated on FEBRUARY 18, 2019
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 to 184.108.40.206 [Release 11.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
- One or more RAC instances go into an apparent hang state with wait time on wait event, 'latch: row cache objects', which could only be resolved by an instance restart
- Use of the diagnostic technique described in <Document 1550722.1> indicates that the latch belongs to the "dc_users" parameter.
- The database application makes references to CURRENT_SCHEMA in any of a variety of possible methods:
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