Shared Cache File – Re Use Cache File – SSIS

Did you tried to create a Shared Cache file in the SSIS?

by shared I mean that a cache file which you can write on it multiple times through package execution.

When you use a Cache Transform in data flow task and write data stream on it, if you try to fill it again in another data flow you will get this error:

[Cache Transform ] Error: The component "Cache Transform" cannot write to the cache because component "Cache Transform" has already written to it.


To solve this issue you need to first find the reason, As you may guess the reason is:

SSIS opens the Cache connection and don’t close it till package complete. This means that every another try to write data into cache file will fail, because connection manager is open through package .

So you can solve this issue with creating a Parent/Child structure. This means that create a child package to fill data into cache file. and then use Execute Package Task to run the child package.

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Reza Rad
Trainer, Consultant, Mentor
Reza Rad is a Microsoft Regional Director, an Author, Trainer, Speaker and Consultant. He has a BSc in Computer engineering; he has more than 20 years’ experience in data analysis, BI, databases, programming, and development mostly on Microsoft technologies. He is a Microsoft Data Platform MVP for nine continuous years (from 2011 till now) for his dedication in Microsoft BI. Reza is an active blogger and co-founder of RADACAD. Reza is also co-founder and co-organizer of Difinity conference in New Zealand.
His articles on different aspects of technologies, especially on MS BI, can be found on his blog:
He wrote some books on MS SQL BI and also is writing some others, He was also an active member on online technical forums such as MSDN and Experts-Exchange, and was a moderator of MSDN SQL Server forums, and is an MCP, MCSE, and MCITP of BI. He is the leader of the New Zealand Business Intelligence users group. He is also the author of very popular book Power BI from Rookie to Rock Star, which is free with more than 1700 pages of content and the Power BI Pro Architecture published by Apress.
He is an International Speaker in Microsoft Ignite, Microsoft Business Applications Summit, Data Insight Summit, PASS Summit, SQL Saturday and SQL user groups. And He is a Microsoft Certified Trainer.
Reza’s passion is to help you find the best data solution, he is Data enthusiast.

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