Hi Roberto, Hans-Rudolf, I can confirm from personal testing that enabling the parallelism task-splitting in Galaxy does not work well with SQLite. This caused me problems with development and testing since my development Galaxy instance uses SQLite. As you found, testing with smaller splits is one way round this, to reduce the chances of a database lock. We use PostgreSQL as recommended on our production Galaxy instance with parallelism enabled, and it works nicely. Peter On Thu, Feb 5, 2015 at 1:53 PM, Hans-Rudolf Hotz <hrh@fmi.ch> wrote:
Hi
I can't promise, this is the solution for your specific problem, but you will always run into "database is locked" issue, when using SQLite.
Hence, I strongly recommend to switch to a PostgreSQL database as the back-end for Galaxy (see also: https://wiki.galaxyproject.org/Admin/Config/Performance/ProductionServer#Swi... )
Hans-Rudolf