40000ERRORTier 2 — Caution✅ HIGH confidencetransaction rollback
Category: Transaction RollbackVersions: All Postgres versions
What this means
SQLSTATE 40000 is the generic transaction rollback code. It is raised when a transaction is rolled back due to a conflict or error that does not map to a more specific 40xxx code. The transaction must be restarted.
Why it happens
- 1Generic transaction rollback not covered by 40001 (serialization failure) or 40P01 (deadlock)
How to reproduce
Generic transaction rollback scenario.
trigger — this will ERROR
ERROR: transaction rollback
Fix 1: Implement retry logic for transaction rollbacks
When 40000 appears in production logs.
fix
Why this works
Rollback codes (class 40) generally indicate transient conflicts that can be resolved by retrying the transaction. Implement exponential backoff retry in the application layer.
Sources
📚 Official docs: https://www.postgresql.org/docs/current/errcodes-appendix.html
🔧 Source ref: Class 40 — Transaction Rollback
Confidence assessment
✅ HIGH confidence
Standard SQLSTATE generic rollback code. Stable across versions.
See also
🔗 Related errors
📄 Reference pages
Transaction ManagementRetry Logic
⚙️ This error reference was generated with AI assistance and reviewed for accuracy. Examples are provided to illustrate common scenarios and may not cover every case. Always test fixes in a development environment before applying to production. Spotted an error? Suggest a correction →