psql

What i am trying to do is to maintain a linked list of all the relations
in a database. When i create a db then i want it to insert into the linked
list the relation ids. As it stands now, i can create a db fine and i see
the relation id's in the linked list. BUT, as soon as i psql into the db
then they all disappear. I maintain an array that stores the linked lists
which i initialized in buf_init.
I don't understand this. Can someone explain why? Is it wiping out the
array i initialized before.

signed
please shed some light