
>        This allows multiple transactions to share identical views of the
        database state.
        Snapshots are exported via <A
HREF="functions-admin.html#FUNCTIONS-SNAPSHOT-SYNCHRONIZATION"
><CODE
CLASS="FUNCTION"
>pg_export_snapshot()</CODE
></A
>
        and imported via <A
HREF="sql-set-transaction.html"
><TT
CLASS="COMMAND"
>SET
        TRANSACTION SNAPSHOT</TT
></A
>.  Only snapshots from
        currently-running transactions can be imported.
       </P
></LI
><LI
><P
>        Support <A
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