When does a secondary replica start a log backup?

When does a secondary replica start a log backup?

Once the primary replica acquires Bulkop lock, it informs to secondary replica to start log backup. It takes log backup after the last log backup LSN The secondary replica starts the log backup and once finished, it sends backup completion notification to the primary replica.

How to check if my database is a read only replica?

You can verify whether you are connected to a read-only replica by running the following query in the context of your database. It will return READ_ONLY when you are connected to a read-only replica. In Premium and Business Critical service tiers, only one of the read-only replicas is accessible at any given time.

Can You maintain a replica in a mounted rather than read-only state?

Redo log data is always transmitted in parallel from the primary database to all of its read replicas. No. PostgreSQL has a single process handling replication. Yes. Redo log data is always transmitted in parallel from the primary database to all of its read replicas. Can you maintain a replica in a mounted rather than a read-only state?

When do I need to do a log backup?

We need to have all log backups after last full backups for any restore requirement. If any node goes down and we cannot access the log backups from that replica, it won’t allow us to do database restore.

Can a secondary database back up a primary database?

To back up a secondary database, a secondary replica must be able to communicate with the primary replica and must be SYNCHRONIZED or SYNCHRONIZING. In a distributed availability group, backups can be performed on secondary replicas in the same availability group as the active primary replica,…

Why do I need a secondary replica in always on availability group?

Primary replica plays an important role in taking backups in SQL Server Always On Availability Groups. We can take a backup from any replica in SQL availability groups but we need to store all log backups at a shared location. We need to have all log backups after last full backups for any restore requirement.