Error
Error Code: ORA-29709

Oracle ORA-29709: CSS Failure

📦 Oracle Database
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Description

The ORA-29709 error indicates a communication failure between the Oracle Database instance and the Cluster Synchronization Services (CSS). This error occurs when the database cannot communicate with CSS to perform cluster-related operations, potentially leading to instance instability or failure.
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Error Message

ORA-29709: Communication failure with Cluster Synchronization Services
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Known Causes

4 known causes
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CSS Process Failure
The CSS process (crsd or ocssd) may have terminated unexpectedly due to a software bug, hardware failure, or resource exhaustion. ⚠
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Network Connectivity Issues
Network problems can prevent communication between the database instance and the CSS daemon on other nodes. 🌐
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Resource Contention
High CPU or memory utilization on the node hosting CSS can lead to delayed responses or timeouts. 💻
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CSS Configuration Errors
Incorrect or corrupted CSS configuration files can cause communication failures. ⚙
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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

Find Help

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