Does postgresq database supports reading data from the same table from many observable simultanousely?

[hmidi slim]

Hi,
I don't know if is it the suitable place to ask my question but I want to
know if a table in a postgres database enable multiple reading actions for
mayn rxjs observbles or not.
I create two observables that need to access the same table simultanously
to get data, but I found that only one of them receive data.
I'm not sure if the problem may be come from the database or not that's why
I asked my question.
Best regards.