Troubleshooting SRA Toolkit: Fixing Common Fastq-dump Errors
The NCBI SRA Toolkit is indispensable for downloading and converting raw sequencing data from the Sequence Read Archive (SRA). However, the legacy tool fastq-dump frequently triggers frustrating pipeline crashes due to network, configuration, or storage issues.
This troubleshooting guide details the most common fastq-dump errors and provides concrete solutions to keep your bioinformatics workflow moving forward. 1. Connection Failures & Timeouts
fastq-dump.3.1.1 err: timeout exhausted while reading file within network system module sys: connection failed or certificate verification failed Use code with caution. Why It Happens
You are executing fastq-dump directly on a remote accession ID. This forces the tool to stream massive genomic data over HTTP/HTTPS while simultaneously formatting text, making it highly vulnerable to minor network drops. Additionally, High-Performance Computing (HPC) compute nodes often block direct internet access entirely. How to Fix It Error while converting sra to fastq – Biostars
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