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Published on

July 29, 2022

An In-Depth Guide to Controlling SQL Server’s Plan Cache Pollution

Welcome to our comprehensive guide on controlling SQL Server’s plan cache pollution, a key aspect of database performance tuning. SQL Server’s plan cache is a critical component for query execution efficiency. However, under certain circumstances, it can become polluted, leading to degraded performance and suboptimal resource utilization. In this article, we’ll explore what plan cache pollution is, why it’s an issue, and how to effectively control it to maintain a high-performing SQL Server environment.

The Role of the Plan Cache in SQL Server

The plan cache, also known as the procedure cache, is where SQL Server stores execution plans for reuse. When a query is submitted, SQL Server aims to either use an existing execution plan from the cache or create a new one if none are suitable. The ability to reuse execution plans is critical for performance because generating a new plan can be resource-intensive and time-consuming.

Understanding Plan Cache Pollution

Plan cache pollution occurs when the cache is filled with execution plans that are not effectively reused, often due to \

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Database Administration, Database Optimization, execution plans, memory management, parameter sniffing, Performance Tuning, plan cache pollution, query cache, Query Optimization, SQL Server

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