Re: Read db files directly

Mingzuo Shen <mzshen@yahoo.com> writes:
> when I say psql shows nothing,
> I really mean "nothing".
> No error messages.

> Of course if I create a new db, psql -l shows my
> new db.

> psql -l
>        List of databases
>   Name  |  Owner   | Encoding
> --------+----------+-----------
>  testdb | postgres | SQL_ASCII
> (1 row)

This sounds like transaction XID wraparound in pg_database.  What
vacuuming policy have you been following?  It'd possibly work to
do "vacuum pg_database" to fix it, but if so you've got other
problems ...

            regards, tom lane