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Common encountered errors in SSIS


Common encountered errors in SSIS

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Velym
Velym
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Hi,

I am currently writing my Bachelor Thesis about error handling in SSIS and generally increasing the robustness of ETL processes.

One of the problems I am facing right now is that I have only limited access to developer experience on errors regularly encountered in SSIS packages.

This is the reason why I would like to ask every interested reader to give some examples of errors they have encountered in SSIS (during runtime) so far. Issues I have encountered so far and will cover in my thesis include missing references in source systems, unanncounced changes to source system data models and connection failure during nightly ETL-runtime.

I am very thankful for every example and will try to incorporate them with a solution prototype in my thesis.

Best Regards,
Vel
Koen Verbeeck
Koen Verbeeck
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Common errors:

* data type mismatch. For example date is expected but a regular string pops up.
* truncation. For example text is too long.
* code page mismatch. You have the regular latin code page (1252) and suddenly you get those weird German symbols in an address.
* connection failures (you already mentioned this + timeout issues)
* metadata changes (source and/or destination. Can happen unexpected with Excel files)
* primary key/unique index violation (duplicate values)
* bad input file format (for example, no text qualifier is chosen and suddenly the delimiter appears inside the data. Or CR/LF becomes LF as row delimiter or the header is repeated multiple times in the data)
* permission issues
* configuration file is missing and suddenly you are inserting data in the test environment instead of the production environment
* out of memory issue
* database/log file too big (disk is full and SQL Server stops inserting data)
* deadlocks



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What’s the deal with Excel & SSIS?

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MCSA SQL Server 2012 - MCSE Business Intelligence
Velym
Velym
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Thanks for those!

Can someone give me an example scenario with an occurring deadlock? I have not encountered this so far - so I'm not sure on how to tackle this.
Koen Verbeeck
Koen Verbeeck
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Velym (7/29/2014)
Thanks for those!

Can someone give me an example scenario with an occurring deadlock? I have not encountered this so far - so I'm not sure on how to tackle this.


Typically this can encounter when you are using stored procedures and/or execute SQL tasks with transactions. So the typical deadlock scenarios you can find in literature, but just executed from SSIS.

I remember having SSIS lock up once because I used multiple data flows with transactions that read and write to the same table simultaneously.



How to post forum questions.
Need an answer? No, you need a question.
What’s the deal with Excel & SSIS?

Member of LinkedIn. My blog at SQLKover.

MCSA SQL Server 2012 - MCSE Business Intelligence
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