Capabilities for SQL Server

This section lists the Capabilities of Data Source Solutions DSS when using 'SQL Server'. For more information about the pre-requisites, access privileges, and other configuration requirements, see SQL Server Requirements.

Capture

DSS supports the following capabilities on SQL Server:

• Capture changes from location (SQL Server from 2012 to 2022).
• Log-based capture (capture from DBMS logging system) (SQL Server from 2012 to 2022).
• Capture from Archive log files only (SQL Server from 2012 to 2022, except on Amazon RDS for SQL Server, Google Cloud SQL for SQL Server, and Microsoft Azure SQL Database).
• Log-based capture of DDL statements using action AdaptDDL (SQL Server from 2012 to 2022).
• Log-based capture of tables without a primary key (SQL Server from 2012 to 2022).
• Direct access to logs on a file system (SQL Server from 2012 to 2022, except on Amazon RDS for SQL Server, Google Cloud SQL for SQL Server, and Microsoft Azure SQL Database).
• Access to logs using SQL interface (SQL Server from 2012 to 2022).
• Log-based capture of tables with LOB column (SQL Server from 2012 to 2022).
• Rewind log-based capture to specific time (dssactivate option -i) (SQL Server from 2012 to 2022).
• Rewind log-based capture to the beginning of currently active oldest transaction (SQL Server from 2012 to 2022).
• Online refresh using accurate LSN/SCN (SQL Server from 2012 to 2022).
• Online refresh skips capture log records early in scanner (SQL Server from 2012 to 2022).
• Populates column dss_cap_user for use in ColumnProperties {dss_cap_user} substitutions (SQL Server from 2012 to 2022).
• Multiple log-based capture jobs can capture from same database (SQL Server from 2012 to 2022, only FN mechanism, not SP).
• Capture from tables with with (data_compression=row) (SQL Server from 2012 to 2022).
• Capture from tables with with (data_compression=page) (SQL Server from 2012 to 2022).
• Read archives from an alternative directory (location property Archive_Log_Path on the capture location) (SQL Server from 2012 to 2022).
• Trigger-based capture (using the location property Capture_Method=DB_TRIGGER at the capture location). This method has been deprecated since 6.2.0/0. (SQL Server from 2012 to 2022).
• Boundaries between transactions preserved by trigger-based capture (SQL Server from 2012 to 2022).
• Trigger-based capture jobs can be woken by db-event when change happens (SQL Server from 2012 to 2022).

DSS does not support the following capabilities on SQL Server:

• Log-based capture from hidden rowid/RRN column (ColumnProperties with parameter CaptureFromRowId).
• Log-based capture of truncate table statements.
• Log-based capture checkpointing using location property Capture_Checkpoint_Frequency.

Repository Database

DSS supports Repository database on SQL Server.

Integrate

DSS supports the following capabilities on SQL Server:

• Integrate changes into location (SQL Server from 2012 to 2022).
• Burst integration (Integrate with parameter Method=BURST) (SQL Server from 2012 to 2022).
• Integrate with parameter BurstCommitFrequency (SQL Server from 2012 to 2022).
• Continuous integration (Integrate with parameter Method=CONTINUOUS) (SQL Server from 2012 to 2022).
• Tables without a key and without TableProperties with NoDuplicateRows for continuous integration (SQL Server from 2012 to 2022).
• Continuous integrate with parameter OnErrorSaveFailed (SQL Server from 2012 to 2022).
• ColumnProperties with parameter SoftDelete (SQL Server from 2012 to 2022).
• Creation and update of DSS state tables (SQL Server from 2012 to 2022).
• Integrate with parameter DbProc (SQL Server from 2012 to 2022).

DSS does not support the following capabilities on SQL Server:

• Append integration into TimeKey (Integrate with parameter Method=APPEND).
• Disable/enable database triggers during integrate (with parameter NoTriggerFiring).

Bi-directional Replication

DSS supports the following capabilities on SQL Server:

• Detection of changes made by DSS in a bidirectional channel to prevent loop-back (SQL Server from 2012 to 2022).
• CollisionDetect with Trigger-based Capture (with location property Capture_Method=DB_TRIGGER on the capture location and CollisionDetect without parameter TimestampColumn) (SQL Server from 2012 to 2022).
• CollisionDetect with parameter TimestampColumn (SQL Server from 2012 to 2022).

DSS does not support the following capabilities on SQL Server:

• CollisionDetect with Log-based Capture (without parameter TimestampColumn).

Refresh and Compare

DSS supports the following capabilities on SQL Server:

• dssrefresh or dsscompare from source location (SQL Server from 2012 to 2022).
• dssrefresh into target location (SQL Server from 2012 to 2022).
• Isolated table dssrefresh (option -i) into target location (SQL Server from 2012 to 2022).
• Row-wise dssrefresh into target location (option -g) (SQL Server from 2012 to 2022).
• Disable/enable foreign keys from table to others during dssrefresh (option -F) (SQL Server from 2012 to 2022).
• Disable/enable triggers during dssrefresh (option -f) (SQL Server from 2012 to 2022).
• Identity columns (SQL Server from 2012 to 2022).
• Select data with 'snapshot' SQL isolation level (dssrefresh option -Msnapshot) (SQL Server from 2012 to 2022).

DSS does not support the following capabilities on SQL Server:

• Bulk load of multiple slices of same table can be done in parallel.

Other Capabilities

DSS supports the following capabilities on SQL Server:

• Call database procedure dbproc during replication jobs (AgentPlugin with parameter DbProc) (SQL Server from 2012 to 2022).
• DbObjectGeneration with parameter IncludeSQLFile (SQL Server from 2012 to 2022).
• International table and column names where DBMS is not configured with UTF-8 encoding (SQL Server from 2012 to 2022).
• Always treat DBMS table names and column names as case sensitive, even if not configured (equivalent to location property Case_Sensitive_Names always set to TRUE) (SQL Server from 2012 to 2022).
• Always treat DBMS schema names case sensitive (SQL Server from 2012 to 2022).

DSS does not support the following capabilities on SQL Server:

• Use distribution key for parallelizing changes within a table (ColumnProperties with parameter DistributionKey).
• Distinguish and support capture from 'materialized views'.