p(dot)sun(dot)fun(at)gmail(dot)com writes:
> I run this function using only one thread and everything works great.
> If I use two threads, the PQresultStatus(res) != PGRES_COMMAND_OK.
Are you trying to use the same PGconn from multiple threads? That
will not work --- at least not without interlocks that libpq on
its own does not provide.
> Can the server handle CREATE DATABASE requests in parallel?
Sure. But they have to be issued over different connections.
Any given connection can only do one thing at a time.
regards, tom lane