exp 导出的文件太大，imp导入某几张表时，会有很长的时间在定位表位置，看着为假死(hang)情况。

在我遇到的情况:
dmp 文件有450G,大概等了50分钟才开始执行导入table显示。

nohup imp system/sys  fromuser=UCR_GZ touser=UCR_GZ file=/backup/recover/TG_CDR_01.dmp log=/backup/recover/TG_CDR_01.log commit=y feedback=10000 ignore=y buffer=1024000000 &

Import: Release 10.2.0.1.0 – Production on Tue Oct 13 22:10:22 2015

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 – 64bit Production
With the Partitioning, OLAP and Data Mining options

Export file created by EXPORT:V10.02.01 via direct path

Warning: the objects were exported by FOREXP, not by you

import done in ZHS16GBK character set and AL16UTF16 NCHAR character set

—————这里就一直挂着了—-等待50分钟左右才开始导入——