HomeBrandsMongoDBDatabase Server & Atlas127
M
127
Moderate
MongoDB · Database Server & Atlas
MongoDB server reported: Lock State Change Failed.
Quick Answer
Error code 127 on your MongoDB Database Server & Atlas means: MongoDB server reported: Lock State Change Failed.. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
MONGO-ATLAS-DEDICATEDMONGO-ATLAS-SERVERLESSMONGO-COMM-6.0MONGO-COMM-7.0MONGO-COMM-8.0MONGO-ENT-6.0MONGO-ENT-7.0MONGO-ENT-8.0
Likely Causes
  1. MongoDB returned code 127 (LockStateChangeFailed) while processing this request path.
  2. Rate, queue depth, or resource ceilings prevented normal execution.
  3. The operation ran longer than configured limits and was interrupted.
How to Fix It
1
Review logs/telemetry for code 127 (LockStateChangeFailed) and capture the exact command and parameters that triggered it.
2
Inspect lock waits, queue depth, and timeout settings around the failing command.
3
Reduce fan-out/concurrency temporarily and stagger retried operations.
4
Tune timeout and workload partitioning so retries do not amplify contention.
5
Add monitoring for recurring LockStateChangeFailed events so future incidents are detected and triaged faster.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Related Error Codes
12456
Video Guides
Loading video guides…
Search more on YouTube →