高手请教急急急!!!

我的LINUX6.2+ORACLE815在导出数据库时出现了错误,如下:


EXP-00008: ORACLE error 4045 encountered
ORA-04045: errors during recompilation/revalidation of SYS.DBMS_AQ_IMPORT_INTERN
AL
ORA-06552: PL/SQL: Compilation unit analysis terminated
ORA-06553: PLS-905: object SYS.AQ$_SUBSCRIBERS is invalid
ORA-06508: PL/SQL: could not find program unit being called
ORA-06512: at line 1
ORA-06512: at "SYS.DBMS_SYS_SQL", line 781
ORA-06512: at "SYS.DBMS_SQL", line 316
ORA-06512: at "SYS.DBMS_EXPORT_EXTENSION", line 82
ORA-06512: at "SYS.DBMS_EXPORT_EXTENSION", line 133
ORA-06512: at line 1
EXP-00222:
System error message 2
EXP-00000: Export terminated unsuccessfully


有那位高手肯赐教本人,将不胜感激!!!