Thank you for suggestion. We did not reach the limit of serial type. Some tables only have hundreds of rows.
It would helpful if you ran the query I showed in my previous post on one the sequences just so we can see.
From subsequent post of yours:
"Sorry. I mean all tables’ id column were reset to 1."
I thought I understood on this, now I am not sure. Do you mean that the actual values in the id column in all the tables have been set to 1 or that the serial sequence that controls the id value has been set to 1?