Author: Alexander Chigrik

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Tips for using Merge Replication in SQL Server 2019 (Part 2)

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Tips for using Merge Replication in SQL Server 2019 (Part 2) Run the Snapshot Agent as infrequently as possible. The Snapshot Agent bulk copies data from the Publisher to the Distributor, which results in some performance degradation. So, try to schedule it during CPU idle time and slow production periods. Specify the -Validate parameter of the Merge Agent. This parameter...

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Tips for using Merge Replication in SQL Server 2019 (Part 1)

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Tips for using Merge Replication in SQL Server 2019 (Part 1) Consider setting the -MaxNetworkOptimization parameter of the Snapshot Agent to 1 to avoid sending irrelevant deletes to the Subscriber. Irrelevant deletes are DELETE commands that are sent to Subscribers for rows that do not belong to the Subscriber’s partition. The default value of the -MaxNetworkOptimization is 0. Setting -MaxNetworkOptimization...

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Tips for using Transactional Replication in SQL Server 2019 (Part 2)

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Tips for using Transactional Replication in SQL Server 2019 (Part 2) Consider increasing the -CommitBatchThreshold parameter of the Distribution Agent. This parameter specifies the number of replication commands to be issued to the Subscriber before a COMMIT statement is issued. The default value is 1000. If you do not need continuous replication, avoid configure the Distribution Agent to run continuously....

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Tips for using Transactional Replication in SQL Server 2019 (Part 1)

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Tips for using Transactional Replication in SQL Server 2019 (Part 1) Try to keep transactions as short as possible. Because SQL Server send changes from the Publisher to Subscriber as INSERT, UPDATE, and DELETE statements you should keep transactions as short as possible to help the Distribution Agent to transfer transactions through the network. By the way, keeping transactions as...

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Tips for using Snapshot Replication in SQL Server 2019 (Part 2)

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Tips for using Snapshot Replication in SQL Server 2019 (Part 2) Consider locating both the publisher and the distributor on the same physical server. You can place the publisher and the distributor on the same physical server when the publisher server can perform the distribution tasks without any performance problems. By the way, using a separate SQL Server for the...

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Tips for using Snapshot Replication in SQL Server 2019 (Part 1)

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Tips for using Snapshot Replication in SQL Server 2019 (Part 1) Snapshot replication is a simplest type of replication. With this kind of replication, all replicated data (replica) will be copied from the Publisher database to Subscriber/Subscribers database on a periodic basis. Snapshot replication is best used as a method for replicating data that modified infrequently and when the size...

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Tips for using views in SQL Server 2019

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Tips for using views in SQL Server 2019 Use views instead of heavy-duty queries to reduce network traffic. Using views instead of heavy-duty queries can reduce network traffic, because your clients will send to server only a simple query, such as SELECT * FROM VIEW_NAME (perhaps with some parameters), instead of large heavy-duty queries text. Consider using stored procedures instead...

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Tips for using stored procedures in SQL Server 2019

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Tips for using stored procedures in SQL Server 2019 Try to avoid using temporary tables and DDL (Data Definition Language) statements inside your stored procedure. Using temporary tables or DDL statements inside stored procedure reduces the chance to reuse the execution plan. Call stored procedure using its fully qualified name. The complete name of an object consists of four identifiers:...

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Tips for using DBCC commands in SQL Server 2019

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Tips for using DBCC commands in SQL Server 2019 Try to run the DBCC commands when there are no other disk I/O operations, such as disk backups, replication and so on. Use DBCC CHECKFILEGROUP instead of DBCC CHECKDB, if you need to check only specified filegroup, not entire database. If your database contains several filegroups and you need to check...

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Tips for using temporary tables in SQL Server 2019

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Tips for using temporary tables in SQL Server 2019 Try to avoid using temporary tables inside your stored procedure. Using temporary tables inside stored procedure reduces the chance to reuse the execution plan. Use Table data type instead of temporary tables whenever possible. A Table data type is a special data type that used for temporary storage of a set...

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