I/O error after collapse

[Demetrio Guzzardi]

Hello everyone,

I am seeking help regarding the collapse function.
I have a large dataset with 38million observation and 52 variables. It is large but not massive.

I am trying to do a collapse or a gcollapse using the gtools. The issue is that I get the "I/O error writing .dta file Usually such I/O errors are caused by the disk or file system being full." but I know for a fact that it is not a problem of space. In fact I am using STATA 18 SE on a server with 400gb of Ram and plenty of hard-drive free space.

Is there something that I can do? I kind of remember that for a similar issue with the reshape that was solved with increasing the matsize or something similar?

Any suggestion would be of great help.

Thanks!

[Nils Enevoldsen]

Try -collapse, fast- or -gcollapse, fast-.