Hi @Gużewski, Jacek ,
Welcome to Microsoft Q&A platform and thanks for posting your question here.
I understand your pipeline is failing with the timeout error having this exception: "java.net.SocketTimeoutException" . Please let me know if that is not the case here.
This could be a transient error, however, it is related to network issues, or a problem with the data source. Kindly recreate the underlying linked service again and see if it helps in resolving the issue.
If the suggested approach doesn't help, kindly make sure you are using Azure integration runtime , not self hosted and also that it is in online state .
For more information, kindly check the following document: Optimizing performance of the Azure Integration Runtime
Hope it helps. Kindly accept the answer and mark it as helpful as accepted answer helps community.