oracle expdp 自动设置当前日期时间为备份文件名的命令

expdp xdusr/xdusr_123@xdcp directory=xdcp_dir dumpfile=xdcp%date:_0,4%%date:5,2%%date:_8,2%%time:0,2%%time:_3,2%%time:6,2%_with_test_data.dmp SCHEMAS=xdusr compression=all & pause