Error - DoQuery-7

Database
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Error - DoQuery-7

Hi..
We use the teradata for storing huge amounts of operational data. We have certain scheduled jobs to be performed on a specific time. This is an automated job where we run a batch of sql select queries and pull data for analysis. It works fine usually but on some days, we get an error and the job does not proceed. The error we get is "Unexpected error while DoQuery-7"

I want to know what the issue is and how it can be prevented?

Thanks.