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Set the Max Degree of Parallelism Option for Optimal Performance

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This rule determines whether the max degree of parallelism (MAXDOP) option for a value greater than 8. Setting this option to a larger value often causes unwanted resource consumption and performance degradation.

Best Practices Recommendations

Set the max degree of parallelism option to 8 or less by using sp_configure.

For More Information

Microsoft Knowledge Base article 329204

Configure the max degree of parallelism Server Configuration Option

sp_configure (Transact-SQL)