Slow Database Replay with Waits on "WCR: replay clock"
(Doc ID 1538269.1)
Last updated on JANUARY 12, 2023
Applies to:
Oracle Cloud Infrastructure - Database Service - Version N/A and laterOracle Database Backup Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 11.1.0.6 and later
Information in this document applies to any platform.
Symptoms
- Database replay is taking a long time to complete.
- Using <Document 760402.1> SCRIPTS TO DEBUG SLOW REPLAY you see long and frequent waits on "WCR: replay clock"
- AWR reports shows large number of "WCR: replay clock" waits.
Changes
- Replay is on a test system.
- Database version for replay may be different from CAPTURE
- Hardware may be different to system where capture was performed
- Storage may be be different to system where capture was performed
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |