On Saturday, July 31, 2021, Rui An <
rueian.huang@gmail.com> wrote:
I have tried use pg_terminate_backend to kill the stuck prcoesses, but no help. They still stuck on waiting for MultiXactOffsetControlLock even if the pg_terminate_backend(pid) returns true.
All the true is telling you is your process sent the requested signal. It, and related functions, provide no insight as to if/how receivers of said signal may have responded.
As for the question at hand - the axiom is “if it ain’t broke don’t fix it”…but as your system is basically broke you need to fix it by running a supported version of the software.
And you should also be prepared for the possibility that 9.6 is discontinued before there is a fix in which case you’d have to upgrade to v10 (at least) to get said fix.
David J.
