Blocking Articles

Page 1 of 1 (3 articles)

7/23/2026 • EN

SQL Server Blocking: What the Head Blocker Does Not Tell You

Explains SQL Server blocking chains, head blockers, and why transaction duration matters more than the session itself for diagnosing performance issues.

Blocking concurrency Head Blocker SQL Server Troubleshooting

Bjoern Peters

6/18/2023 • EN

Blocking, covariate adjustment and optimal experiment design

Explains blocking, covariate adjustment, and optimal design to improve statistical power in online experiments, with a Python implementation.

Blocking Covariate Adjustment Experimental Design Python Statistical Power

Emir U

10/24/2018 • EN

Blocking when missing Permissions – The strange case of the blocked index rebuild

Analysis of a SQL Server blocking scenario where a failed update with missing permissions blocks an index rebuild, exploring lock incompatibility.

Blocking Index Rebuild permissions SQL Server Transaction Locking

Andreas Wolter

Blocking Articles

SQL Server Blocking: What the Head Blocker Does Not Tell You

Blocking, covariate adjustment and optimal experiment design

Blocking when missing Permissions – The strange case of the blocked index rebuild

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