Abilio Marques wrote:

Hello,

I read the documentation for the mdb_txn_begin function, and the note reads "a transaction and its cursors must only be used by a single thread". Does this rule also apply to being a parent for another thread transaction?

Yes.

I gave it a quick shot, and it seems to work for me, but I'm not sure if I'm breaking the rules. Can anybody confirm this?

Yes, you are breaking the rules.

Best, Abilio