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IDProjectCategoryView StatusLast Update
0002338SymmetricDS ProImprovementpublic2024-08-07 17:19
Reporterondrejhala Assigned Toelong  
Prioritynormal 
Status resolvedResolutionfixed 
Product Version3.7.19 
Target Version3.16.0Fixed in Version3.16.0 
Summary0002338: Bulk Extract for MSSQL
DescriptionWhen extracting big table containing BLOBs on MSSQL i get only about 2MB/s write speed to batch file. When i use the MSSQL bcp utility the speed is about 16+MB/s. It is min 8 times faster.

Are you interested to implement the bulk extractor for MSSQL? It can speed up the extraction significantly.

There is a configuration parameter in bcp in which you can setup the desired output format.
https://msdn.microsoft.com/en-us/library/ms191516.aspx
Additional InformationPerformance comparion - selects and string operations are included also:
http://florianreischl.blogspot.de/2012/03/performance-comparison-of-sql-server.html
Tagsbulk, dialect: sql-server

Relationships

related to 0006551 resolvedelong Bulk export for SQL Server and Sybase ASE 

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Issue History

Date Modified Username Field Change
2015-06-29 09:45 ondrejhala New Issue
2015-06-29 09:46 ondrejhala Tag Attached: bulk
2015-06-29 09:46 ondrejhala Tag Attached: extract
2015-06-29 09:46 ondrejhala Tag Attached: mssql
2015-06-29 09:47 ondrejhala Tag Attached: bcp
2019-04-12 12:46 admin Tag Detached: bcp
2019-04-12 16:35 admin Tag Renamed bulk => bulk loader
2019-04-23 12:17 elong Tag Detached: extract
2019-04-23 12:17 elong Tag Detached: bulk loader
2019-04-23 12:17 elong Tag Attached: bulk
2019-04-23 20:49 admin Tag Renamed mssql => dialect: mssql
2019-04-24 12:50 admin Tag Renamed dialect: mssql => dialect: sql-server
2024-08-07 17:17 pmarzullo Relationship added related to 0006551
2024-08-07 17:18 pmarzullo Assigned To => elong
2024-08-07 17:18 pmarzullo Status new => resolved
2024-08-07 17:18 pmarzullo Resolution open => fixed
2024-08-07 17:18 pmarzullo Fixed in Version => 3.16.0
2024-08-07 17:19 pmarzullo Project SymmetricDS => SymmetricDS Pro