Description of the illustration mv_log_purge_clause.eps

PURGE { IMMEDIATE [ SYNCHRONOUS | ASYNCHRONOUS ]
      | START WITH datetime_expr [ NEXT datetime_expr 
                                 | REPEAT INTERVAL interval_expr 
                                 ]
      | [ START WITH datetime_expr ] { NEXT datetime_expr 
                                     | REPEAT INTERVAL interval_expr 
                                     }
      }