Couple of questions regarding this topic. Setup that I have is 4 nodes in Hyper-V. 2 same location and the others in different datacenters. We use the systems databases for all logins. So will need to migrate them as well.
1. When doing an in-place upgrade on an AG what is the rollback?
2. When manually failing over after the 3 secondary nodes are upgraded what happens?
3. Does it failover instantly or does it take it offline and upgrade?
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Using SQL Scripts we can save all the SQL queries as files that we use very frequently on our database later point of time. This is one of the feature present under SQL Workshop in Oracle Application Express.
Using examples as well as descriptions, and references to Books Online, show the different Recovery Models available in SQL Server and explain, as well as show how full, differential and transaction log backups are performed