Hi, Le dim. 23 janv. 2022 à 22:34, Pavel Stehule <pavel.steh...@gmail.com> a écrit :
> I tested it now. a sinval message is waiting on the transaction end. So > when a variable is used, then it is working fine until the transaction ends. > But when the session makes some DDL, then send sinval to self, and at this > moment, the variable can be dropped before the transaction ends. > a backend can accept sinval in very common scenarios, like acquiring a heavyweight lock. That includes accessing a relation thats not in the catcache, so that's really critical to have a protection here.
