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Do indexes get replicated?
CREATE INDEX and ALTER INDEX are not replicated, so if you add or change an index at, for example, the Publisher, you must make the same addition or change at the Subscriber if you want it reflected there. You would need to push a snapshot.
Can we replicate non clustered index to subscribers?
Replicating Non-Clustered Indexes Improves Subscriber Query Performance. One of the advantages of replication is that subscribing servers can be used for reporting thereby offloading RO query activity from the Publisher. Find the Copy Nonclustered Indexes setting, set this option to true, and click OK.
What is peer to peer replication?
Peer-to-peer replication provides a scale-out and high-availability solution by maintaining copies of data across multiple server instances, also referred to as nodes. Built on the foundation of transactional replication, peer-to-peer replication propagates transactionally consistent changes in near real-time.
When to rebuild and reorganize SQL server indexes?
Here is the reasoning behind the thresholds above which will help you to determine if you should perform index rebuild or index reorganization: Index reorganization is a process where the SQL Server goes through the existing index and cleans it up.
Can a secondary replica be used in index rebuild?
In conclusion, we’ve seen that performing index rebuild operations with either online or offline options can effectively have a different impact depending on where the action is performed (primary or secondary replica).
How does a database engine rebuild a ColumnStore index?
When rebuilding a columnstore index, the Database Engine reads all data from the original columnstore index, including the delta store. It combines data into new row groups, and compresses all row groups into columnstore. The Database Engine defragments the columnstore by physically deleting rows that have been marked as deleted.
What happens to an index in SQL Server?
After indexes are created, they will undergo automatic maintenance by the SQL Server Database Engine whenever insert, update or delete operations are executed on the underlying data. Even so, these automatic modifications will continuously scatter the information in the index throughout the database – fragmenting the index over time.