---
title: "Discussion on \"The Identity Crisis: How to Fix Arithmetic Overflow Error 8115 and Prevent Database Crashes\n\" | Hashnode"
description: "Discussion on \"The Identity Crisis: How to Fix Arithmetic Overflow Error 8115 and Prevent Database Crashes\n\". Defusing the 2-billion-row time bomb: Why auto-incrementing integer keys suddenly hit an invisible ceiling, how to audit your system limits, and how to migrate to BIGINT safely."
url: "https://hashnode.com/posts/the-identity-crisis-how-to-fix-arithmetic-overflow-error-8115-and-prevent-database-crashes/6a43ebb05d7c4aa688b3d498"
---

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# [The Identity Crisis: How to Fix Arithmetic Overflow Error 8115 and Prevent Database Crashes](https://tunedinstance.com/the-identity-crisis-how-to-fix-arithmetic-overflow-error-8115-and-prevent-database-crashes?utm_source=hashnode&utm_medium=feed)

Defusing the 2-billion-row time bomb: Why auto-incrementing integer keys suddenly hit an invisible ceiling, how to audit your system limits, and how to migrate to BIGINT safely.

Jun 30 · 7 min read · tunedinstance.com  
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## Written by

[Rakesh Kishore](https://hashnode.com/@RakeshKishore)

@RakeshKishore · Hyderabad, India

  
[View profile](https://hashnode.com/@RakeshKishore)

Sharing a decade of database lessons, failures, and fixes.

Senior Database Administrator specializing in SQL Server core internals, high-concurrency optimization, and enterprise database architecture. Over the last decade, my focus has been on mastering and breaking down complex database engine mechanics—from B-Tree performance tuning and TempDB allocation contention to deploying resilient cloud database infrastructure and high-availability clusters. I write at TunedInstance.com to share real-world production triage, architectural blueprints, and deep-dive technical strategies to keep mission-critical workloads fast, secure, and highly available.

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