I think development has moved away from Oracle now partly, but at one point there was a Sun/Oracle only version. This piece [0] argues that the reason for not d

I think development has moved away from Oracle now partly, but at one point there was a Sun/Oracle only version. This piece [0] argues that the reason for not dual licensing it was that there might be GPL only contributions and then eventually a GPL fork, which is not that unlikely given the larger size of Linux vs VSD+Solaris. Same with ZFS I guess, even if Oracle mostly sponsored btrfs. [0] https://blogs.oracle.com/ahl/entry/dtrace_knockoffs https://blogs.oracle.com/ahl/entry/dtrace_knockoffs