Michael Lewis <mlewis@entrata.com> writes:
>> A transaction started with the first statement will not take any SI locks,
>> nor will it ever receive a serialization error.
> What is the meaning of SI? Anything you are aware of in source code or a
> blog post that discusses this?
There's src/backend/storage/lmgr/README-SSI, which might or might
not be the level of detail you are looking for.
regards, tom lane