Error
Error Code: ACFS-05951

Oracle Database Error ACFS-05951: Snapshot Blocked During Replication

📦 Oracle Database
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Description

This error indicates that an attempt to create an ACFS snapshot on the primary filesystem was blocked. It occurs specifically when ACFS replication is actively updating the standby filesystem, preventing snapshot creation until the replication cycle completes.
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Error Message

snapshot creation is blocked while ACFS replication is updating the standby
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Known Causes

4 known causes
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Active Replication Sync
ACFS replication is currently in progress, transferring data changes from the primary to the standby filesystem.
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Replication Lag
A backlog of changes or network latency may be causing the replication process to take longer than expected, extending the update window.
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Standby Filesystem Issues
Problems on the standby filesystem, such as I/O bottlenecks or insufficient space, might prolong the replication update phase.
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Timing Conflict
A snapshot creation command was inadvertently issued at the precise moment an ACFS replication update began or was in progress.
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Solutions

Coming Soon

Detailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:

General Troubleshooting Tips

  • Check the error message carefully for specific details
  • Review recent changes that might have caused the error
  • Search for the exact error code in the official documentation
  • Check log files for additional context
  • Try restarting the application or service