transaction ID query

[Kevin Kempter <kevin@xxxxxxxxxxxxxxxxxxx>]

Hi List;

can I run queries to see the following for postgres v 8.1.4:
 
a) where the db is per used transaction ID's (want to avoid a transaction ID 
wrap-around scenario)

b) a list of tables in the db and the last time they were vacuumed


Thanks in advance

/Kevin

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