Error
Error Code: ORA-29981

Oracle ORA-29981: DDL Conflict

📦 Oracle Database
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Description

The ORA-29981 error indicates a conflict when registering a query because a Data Definition Language (DDL) operation is already in progress. This error typically occurs when attempting to register a query during database schema modifications.
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Error Message

ORA-29981: Cannot register query: conflicting DDL in progress
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Known Causes

2 known causes
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Concurrent DDL Operation
A DDL statement (e.g., CREATE TABLE, ALTER TABLE) is running simultaneously while the query registration is attempted.
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Schema Modification
The database schema is being modified by another user or process, leading to a lock that prevents query registration.
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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

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