用impdp数据泵工具导入数据出现一个错误，导入过程意外中止了。经在网上查资料发现这是11G的一个BUG，导入时需要加入EXCLUDE=STATISTICS参数。
错误提示：
ORA-39126: Worker unexpected fatal error in KUPW$WORKER.PUT_DDLS [TABLE_STATISTICS]
ORA-06502: PL/SQL: numeric or value error
LPX-00242: invalid use of ampersand (‘&’) character (use &)
ORA-06512: at “SYS.DBMS_SYS_ERROR”, line 95
ORA-06512: at “SYS.KUPW$WORKER”, line 9001
—– PL/SQL Call Stack —–
object line object
handle number name
0x916c7af0 20462 package body SYS.KUPW$WORKER
0x916c7af0 9028 package body SYS.KUPW$WORKER
0x916c7af0 16665 package body SYS.KUPW$WORKER
0x916c7af0 3956 package body SYS.KUPW$WORKER
0x916c7af0 9725 package body SYS.KUPW$WORKER
0x916c7af0 1775 package body SYS.KUPW$WORKER
0x93acfc98 2 anonymous block
解决方法：
EXCLUDE=STATISTICS –impdp语句中加入参数
