Suspend Referential Integrity?

I'm trying to port a database from Oracle to PostgreSQL.  I used a perl script,
ora2pg to extract the info from Oracle.

The table data was extracted in alphabetical order.  When I attempt to load it,
I get referential integrity violations (eg. I attempt to load CUSTOMER, but
CUSTOMOER depends on the SOURCE table, which hasn't been loaded yet).

Is there a way to temporarily suspend RI checking so I can load the data and
then fix it later?

=================================================================
| Jim Jarrett,Madison, WI       94 Passat GLX                   |
| mailto:jarrett@rpa.net         81 Rabbit Convertible 16v      |
|                                                               |
|    Any problem can be solved with the proper application of   |
|   Force, Heat, Chemicals, or Money.                           |
================================================================