Explanation/Reference:
sys.sp_rda_reauthorize_db restores the authenticated connection between a local database enabled for Stretch and the remote database.
If you have accidentally deleted columns from the remote table, run sp_rda_reconcile_columns to add columns to the remote table that exist in the Stretch-enabled SQL Server table but not in the remote table.
Incorrect Answers:
A: sys.sp_rda_reconcile_batch reconciles the batch ID stored in the Stretch-enabled SQL Server table with the batch ID stored in the remote Azure table.
Typically you only have to run sp_rda_reconcile_batch if you have manually deleted the most recently migrated data from the remote table. When you manually delete remote data that includes the most recent batch, the batch IDs are out of sync and migration stops.
References:
https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sys-sp-rda-reconcile- batch-transact-sql
https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sys-sp-rda- reauthorize-db-transact-sql