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Unless you've setup this monitoring previously then there is no way to query for items in the past
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Unless you've setup this monitoring previously then there is no way to query for items in the past

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The counters are kept only from the last time SQL Server service restarted.<br />
It's your SQL Server instance working the last 2 months with suffering a restart?
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The counters are kept only from the last time SQL Server service restarted.
It's your SQL Server instance working the last 2 months with suffering a restart?

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How to query last 2 months CPU history using T-SQL in SQL Server 2008 R2?
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How to query last 2 months CPU history using T-SQL in SQL Server 2008 R2?

CPU History in SQL Server 2008 R2

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.