RAC Instance Hangs with High Percentage of Wait Time on 'latch: row cache objects'
(Doc ID 2207660.1)
Last updated on JULY 22, 2024
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.4 to 12.1.0.2 [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.
Symptoms
- 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:
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |