# Error when running DADA2

**URL:** https://forum.qiime2.org/t/error-when-running-dada2/7910
**Category:** Technical Support
**Created:** [January 21, 2019, 9:18am UTC](https://forum.qiime2.org/t/error-when-running-dada2/7910 "2019-01-21T09:18:29Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Nicholas\_Bokulich](https://forum.qiime2.org/user_avatar/forum.qiime2.org/nicholas_bokulich/32/19937_2.png) [@Nicholas\_Bokulich](https://forum.qiime2.org/u/Nicholas_Bokulich)
#### Post date: [January 21, 2019, 3:21pm UTC](https://forum.qiime2.org/t/error-when-running-dada2/7910/2 "2019-01-21T15:21:39Z")

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Hi @Zimtblatt,

> [@Zimtblatt](#):
>
> running DADA2 in R (return code -9)

This is a memory error. See here for support with this error on virtualbox:

> [@DADA2 denoise-paired error: R (return code -9)](https://forum.qiime2.org/t/dada2-denoise-paired-error-r-return-code-9/5863):
>
> I am running QIIME2 2017.9 in a Virtual Box, and I ran the following command: qiime dada2 denoise-paired --i-demultiplexed-seqs demux-paired-end.qza --p-trim-left-f 0 --p-trim-left-r 0 --p-trunc-len-f 200 --p-trunc-len-r 200 --o-table table.qza --o-representative-sequences rep-seqs.qza And received this error: An error was encountered while running DADA2 in R (return code -9) please inspect stdout and stderr to learn more. I was looking at the forum, but most of things are abo…

Good luck!

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