Quick Scan Report – Reindexing During the Day
Why Reindexing During the Day Is a Problem
Rebuilding or reorganizing indexes is essential for SQL Server performance but should be scheduled during maintenance windows or off-peak hours to avoid:
- Performance slowdowns – High CPU, memory, and I/O usage can degrade application performance.
- Blocking and contention – Index operations lock tables, preventing other queries from running.
- TempDB overload – Excessive use of TempDB can cause resource exhaustion.
- Risk of outages – Poorly timed index maintenance can disrupt critical business operations.
How to Reduce Impact If Reindexing Must Be Done During the Day
- Use ONLINE=ON (Enterprise Edition) to minimize locking issues.
- Target only high-fragmentation indexes instead of rebuilding everything.
- Limit resource usage with MAXDOP to control CPU impact.
- Monitor and plan with Database Health Monitor to optimize maintenance scheduling.
Best Practice: Perform Index Maintenance During Off-Peak Hours
Scheduling index maintenance outside of business hours ensures minimal impact on performance and system stability.
Check out our Blog Post about Rebuilding and Reorganizing Indexes best practices.
Need Help Managing Index Maintenance?
Stedman Solutions’ SQL Server Managed Services can help optimize index strategies, reduce fragmentation, and ensure zero downtime during maintenance.
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