Error
Error Code: ORA-29741

Oracle Error ORA-29741: IMR Inconsistency

📦 Oracle Database
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Description

The ORA-29741 error indicates an inconsistency in the In-Memory Row (IMR) feature activation across different instances of an Oracle cluster database. It occurs when IMR is enabled on some instances but not others, leading to data integrity and performance issues.
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Error Message

ORA-29741: IMR active for some, but not all members of cluster
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Known Causes

3 known causes
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Parameter Mismatch
The `_imr_active` initialization parameter is set differently across instances.⚠ This discrepancy causes some instances to enable IMR while others do not.
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Incorrect Instance Configuration
One or more instances may have been incorrectly configured during or after the IMR setup process.⚠ This leads to a state where the IMR feature is only partially activated.
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Configuration File Corruption
The `init.ora` file or server parameter file (SPFILE) might be corrupted on certain instances.⚠ This corruption can result in incorrect IMR settings.
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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