dbaplus Community
dbaplus Community
Jan 3, 2026 · Databases

When MySQL Auto‑Increment Hits INT Limit: Diagnosis and Fixes

The article recounts a MySQL production incident where an INT auto‑increment column reached its maximum value, causing insert failures, and walks through analysis, three remediation options, a stored‑procedure cleanup, a conversion to BIGINT, performance monitoring, and lessons on concurrency and schema design.

BIGINTDatabase PerformanceINT overflow
0 likes · 9 min read
When MySQL Auto‑Increment Hits INT Limit: Diagnosis and Fixes
Java Tech Enthusiast
Java Tech Enthusiast
Oct 7, 2025 · Databases

When MySQL Auto‑Increment Hits INT Limit: Diagnosis & Fixes

The article recounts a real‑world incident where a massive MySQL table exceeded the INT auto‑increment limit, causing insert failures, and walks through analysis, three remediation strategies—including converting to BIGINT, using distributed IDs, and sharding—plus practical SQL scripts and performance insights for handling billions of rows.

BIGINTDatabase MigrationINT overflow
0 likes · 9 min read
When MySQL Auto‑Increment Hits INT Limit: Diagnosis & Fixes
FunTester
FunTester
Sep 20, 2020 · Databases

When VIP Expiration Hits 2038: The MySQL INT Overflow Bug

A hidden bug occurs when a user's VIP subscription is repeatedly extended, causing the stored expiration timestamp to exceed MySQL's signed INT maximum of 2147483647 (January 19, 2038), which prevents the date from being saved correctly.

2038 problemINT overflowMySQL
0 likes · 3 min read
When VIP Expiration Hits 2038: The MySQL INT Overflow Bug
FunTester
FunTester
Sep 28, 2019 · Backend Development

When VIP Expiration Hits 2038: Uncovering MySQL INT Overflow

A bug was discovered where a user's VIP expiration date could not extend beyond a specific day in 2038 because the timestamp was stored in a signed INT column, whose maximum value (2147483647) corresponds to 2038‑01‑19 11:14:07, causing the system to fail to save later dates.

INT overflowMySQLVIP expiration
0 likes · 3 min read
When VIP Expiration Hits 2038: Uncovering MySQL INT Overflow