We are trying to migrate from sql server 2012 to sql server 2014 on windows 2000 R2 OS.After the upgrade, we are doing performance testing and observed huge difference in running a simple query from only one table (No joins at all).The query is getting executed in [b]4 seconds in Sql 2012[/b], but taking more than [b]1 minute[/b] in [b]sql 2014[/b]. Both are running on the same OS with same hardware configurations.From the execution plan, observed difference in the below property (EstimatedPagesCached).In Sql Server 2014, we are getting below one : <OptimizerHardwareDependentProperties EstimatedAvailableMemoryGrant="104844" EstimatedPagesCached="1280" EstimatedAvailableDegreeOfParallelism="2" />whereas in 2012, we are getting below one :<OptimizerHardwareDependentProperties EstimatedAvailableMemoryGrant="104844" EstimatedPagesCached="2128" EstimatedAvailableDegreeOfParallelism="2" />Any help is highly appreciated.Thanks in advanceGopi Srinivas.
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