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Wait sufficient time to collect representative data of the workload.Ĭhange the compatibility level of the database to 130 For more information about enabling and using the query store, see Monitoring Performance By Using the Query Store.
#Compare sql server 2016 express upgrade
Upgrade a database to SQL Server 2016 without changing the database compatibility level (keep it at prior level)Įnable the query store on the database. The recommended workflow for upgrading the query processor to the latest version of the code is: Microsoft has an upgrade strategy for changing the compatibility mode on SQL Server 2016. Should i remove all stored procedures plans from cache? These queries are written well, also I rebuild indexes and stats nightly.Ĭompared plans which look the same, with a couple of percentages slightly off, still the same plan though! i think CE isn't getting good row counts.Īlso what is weird some times the queries run fine in 130 so i think all is good, but suddenly get an alert and the query is taken ages just by 2 rows being different then I have to add back OPTION (QUERYTRACEON 9481) to get it speedy again.Īre there any other things I can check / do to help get these queries get back to their former glory? This has had a detrimental effect on a quite a few sprocs/queries, some which where running in split seconds are now taking minutes. After a fair amount of testing and running the migration adviser i decided to flick the "switch" and changed the compatibility level to 130.
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Recently upgraded from SQL Server 2008 to 2016, been running in compatibility mode 100 for 4 months everything was ticking along nicely (fast).