Error
Error Code: ORA-29326

Oracle Compatibility Mismatch

📦 Oracle Database
📋

Description

The ORA-29326 error indicates an attempt to set the database compatibility level higher than the release number of one or more instances in a cluster. This typically occurs when upgrading or modifying the compatibility setting in a multi-instance environment.
💬

Error Message

ORA-29326: SET COMPATIBILITY release number higher than string
🔍

Known Causes

3 known causes
⚠️
Inconsistent Instance Versions
One or more Oracle instances participating in the database have an older version than the target compatibility level.
⚠️
Incorrect Compatibility Value
The ALTER DATABASE SET COMPATIBILITY command specifies a release number that is not supported by all instances.
⚠️
Rolling Upgrade Issue
During a rolling upgrade, some instances may not have been upgraded to the same version as others before the compatibility setting was changed.
🛠️

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

Stack Overflow Google Search Official Docs