Error
Error Code: ORA-12842

Oracle ORA-12842: Cursor Invalidated

📦 Oracle Database
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Description

The ORA-12842 error indicates that a cursor was invalidated during the parse phase of parallel execution, often when set operands are parallelized. This typically occurs due to changes to database objects or resource contention.
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Error Message

ORA-12842: Cursor invalidated during parallel execution
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Known Causes

4 known causes
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DDL Operations
Data Definition Language (DDL) operations, such as `ALTER TABLE` or `DROP INDEX`, on a schema object invalidate related cursors. ⚙
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Shared Pool Flush
Flushing the shared pool removes cached SQL and PL/SQL, invalidating cursors using those objects. 💻
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Object Recompilation
Recompilation of a stored procedure or function can invalidate cursors that depend on it. 🔒
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Resource Contention
High resource utilization can trigger cursor invalidation as the database attempts to manage memory. ⚠
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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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