Error
Error Code:
12587
MongoDB Error 12587: Namespace Operation Active
Description
This error indicates that MongoDB cannot complete your requested operation because another background task is currently active on the specified database or collection namespace. MongoDB intentionally prevents conflicting operations to ensure data integrity and avoid potential corruption. It typically occurs when attempting to modify a namespace while an asynchronous process is already running.
Error Message
Background Operation In Progress For Namespace
Known Causes
4 known causesOngoing Index Creation
A new index is currently being built on the affected collection, which is a resource-intensive background operation.
Replica Set Resync
A replica set member might be undergoing a resynchronization process or initial sync, which involves background data operations.
Internal Data Maintenance
MongoDB's internal storage engine (e.g., WiredTiger) may be performing compaction or data migration tasks in the background.
Conflicting Drop Operation
Attempting to drop a database or collection while other operations or connections are still active on it can trigger this error.
Solutions
Coming SoonDetailed 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