Factors to consider when we migrate the sql server to 2019.

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when migrating from SQL Server 2016 to SQL Server 2019, we need to consider below factors.

Factors to ConsiderExplanation
Application CompatibilityCheck with application vendor/developer for compatibility. Review and update application code/queries.
New FeaturesEvaluate new features and enhancements in SQL Server 2019. Determine if changes to application/database design are necessary to take advantage of them.
PerformanceEvaluate current performance on SQL Server 2016. Determine if tuning/optimization is necessary.
Backup and Restore CompatibilityVerify that backups taken on SQL Server 2016 are compatible with SQL Server 2019. Plan for restoring backups to new instance.
Database SizePlan for migration of large databases. Ensure that process does not impact database availability.
Maintenance PlansReview and update maintenance plans as necessary to ensure compatibility with SQL Server 2019.
Compatibility Level of Dependent DatabasesEnsure compatibility level of dependent databases is compatible with SQL Server 2019.

Proper planning and testing can help ensure a successful migration with minimal impact on performance or functionality.

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