TAB_TEST_04.dmp文件大小不对时的impdp提示

[oracle@y11 ~]$ impdp sys/oracle directory=expdir  dumpfile=TAB_TEST_%U.dmp logfile=TAB_TEST_imp_1010.log exclude=statistics

Import: Release 11.2.0.3.0 - Production on Mon Oct 12 16:53:31 2015

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UDI-01017: operation generated ORACLE error 1017
ORA-01017: invalid username/password; logon denied

Username: / as sysdba

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Master table "SYS"."SYS_IMPORT_FULL_01" successfully loaded/unloaded
Starting "SYS"."SYS_IMPORT_FULL_01":  /******** AS SYSDBA directory=expdir dumpfile=TAB_TEST_%U.dmp logfile=TAB_TEST_imp_1010.log exclude=statistics 
Processing object type TABLE_EXPORT/TABLE/TABLE
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
ORA-31693: Table data object "FRONT"."TAB_TEST" failed to load/unload and is being skipped due to error:
ORA-31645: unable to read from dump file "/home/oracle/TAB_TEST_04.dmp"
ORA-31622: premature end of file at block 1126697
Processing object type TABLE_EXPORT/TABLE/INDEX/INDEX
Processing object type TABLE_EXPORT/TABLE/INDEX/FUNCTIONAL_INDEX/INDEX
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Job "SYS"."SYS_IMPORT_FULL_01" completed with 1 error(s) at 17:05:01