主要是目标数据库的字符集与导入文件的字符集不符
SQL>SHUTDOWN IMMEDIATE SQL>STARTUP MOUNT SQL>ALTER SYSTEM ENABLE RESTRICTED SESSION; SQL>ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0; SQL>ALTER SYSTEM SET AQ_TM_PROCESSES=0; SQL>ALTER DATABASE OPEN; SQL> ALTER DATABASE CHARACTER SET ZHS16GBK; SQL>ALTER DATABASE CHARACTER SET INTERNAL_USE ZHS16GBK; SQL>SHUTDOWN IMMEDIATE SQL>STARTUP