可以查看导入导出的进度

set linesize 200 pagesize 50column spid_sid_s# format A18 heading 'SPID,SID,SERIAL#'column operation format A20 word_wrapcolumn progress format A13column total format A15column eta format A8column message format A30 word_wrapcolumn username format A10select c.spid || ',' || a.sid || ',' || a.serial# as spid_sid_s#,       a.opname as operation,       a.totalwork || ' ' || a.units as total,       round(a.sofar/a.totalwork*100) || '% in ' || a.elapsed_seconds || 's' as progress,       decode(a.sofar, 0, 'N/A', round(a.elapsed_seconds * (a.totalwork - a.sofar) / a.sofar / 60, 1) || 'm') as ETA,       a.message,       a.username  from v$session_longops a,       v$session b,       v$process cwhere a.sid = b.sid   and a.serial# = b.serial#   and b.paddr = c.addr   and a.sofar < a.totalwork;