-There are multiple phases in the conversion process which can be monitored in the Azure portal (progress reporting page), Azure CLI ([az sql db op list](/cli/azure/sql/db/op#az-sql-db-op-list)), PowerShell ([Get-AzSqlDatabaseActivity](/powershell/module/az.sql/get-azsqldatabaseactivity)), or T-SQL (with [sys.dm_operation_status](/sql/relational-databases/system-dynamic-management-views/sys-dm-operation-status-azure-sql-database)). When converting a database from the Premium or Business Critical service tiers to Hyperscale, existing client connections are disconnected during phase 1. This is similar to the disconnect that occurs when scaling the database between service tiers. Applications should be designed to gracefully handle transient connectivity interruptions by implementing retry logic as described in [Retry logic for transient errors](/azure/azure-sql/database/troubleshoot-common-connectivity-issues#retry-logic-for-transient-errors).
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