IMP-00008: unrecognized statement in the export file: string

上周需要将Oracle10g中的某一个用户下的对象导入到oracle11g中去。用exp在10g的数据库服务器上导出的dump文件，再用imp在11g的数据库服务器上将dump文件导入到数据库中，前面执行的都很正常，后来发现报如下错误： IMP-00008: unrecognized statement in the

上周需要将Oracle10g中的某一个用户下的对象导入到oracle11g中去。用exp在10g的数据库服务器上导出的dump文件，再用imp在11g的数据库服务器上将dump文件导入到数据库中，前面执行的都很正常，后来发现报如下错误：

IMP-00008: unrecognized statement in the export file:

IMP-00008: unrecognized statement in the export file:



IMP-00008: unrecognized statement in the export file:
  ?
IMP-00008: unrecognized statement in the export file:
 
IMP-00008: unrecognized statement in the export file:
  #
IMP-00008: unrecognized statement in the export file:
  #
IMP-00008: unrecognized statement in the export file:

IMP-00008: unrecognized statement in the export file:

IMP-00008: unrecognized statement in the export file:

IMP-00008: unrecognized statement in the export file:

IMP-00008: unrecognized statement in the export file:

IMP-00008: unrecognized statement in the export file:

Oracle官方文档的对这个错误的是这么说的：

IMP-00008: unrecognized statement in the export file:string
Cause:Import did not recognize a statement in the export file. Either the export file was corrupted, or an Import internal error has occurred.
Action:If the export file was corrupted, retry with a new export file. Otherwise, report this as an Import internal error and submit the export file to customer support.
看这个没有什么帮助。

后来查到是由于Oracle11g有个新特性，不能导入空表：

11G中有个新特性，当表无数据时，不分配segment，以节省空间，这样就会没有导出数据　

现在常用的方法
  ??
IMP-00008: unrecognized statement in the export file:
  ?
IMP-00008: unrecognized statement in the export file:
在用imp 导入数据的时候出现IMP-00008: unrecognized statement in the export file:的错误，

解决方法

在Oracle 11g中，exp默认不能导出空表。用传统的exp，imp进行异构平台数据库迁移会比较麻烦。不过可以使用expdp、impdp进行迁移。


把64位windows 2003的Oracle11gR2数据库迁移到64位Linux RedHat Enterprise 5中，可以使用expdp、impdp进行迁移数据。


如：Linux 为A服务器，Linux为B服务器,数据库用户为test，把A服务器的数据迁移到B服务器中

在A服务器操作
1、创建目录
SQL> create directoryexpdp_diras '/home/Oracle/expdp_dir';  //一台服务器只要创建一次
2 赋予导出的用户权限
SQL> grant read,write on directoryexpdp_dirto test；//一台服务器只要创建一次


3、在Linux目录创建目录/home/Oracle/expdp_dir

mkdir -p /home/Oracle/expdp_dir //一台服务器只要创建一次


4、在命令窗口导出：

expdp test/test DIRECTORY=expdp_dirDUMPFILE=test.dmp logfile=testexpdp.log  //每次都要操作
在B服务器中操作：

5、SQL> create directory impdp_dir as '/home/Oracle/impdp_dir';//一台服务器只要创建一次

  SQL> grant read,write on directory impdp_dir to test；//一台服务器只要创建一次

6、 在系统中需要有/home/Oracle/impdp_dir目录
7、用ftp把A服务器导出的数据上传到B服务器的/home/Oracle/impdp_dir目录中
在A服务器中配置好B服务器的服务器名,在A服务器导入数据
8、在命令窗口导入：
impdp test/test@B_database DIRECTORY=impdp_dir DUMPFILE=test.dmp logfile=testimpdp.log

（这里注意大小写，如果test.dmp在linux中为大写，必须更改为大写。Linux区分大小写）


解决方法，原理就是往所有的空表中分配空间：


方法1：
用Oracle sqldeveloper ,建立下面的存储过程
--查询当前用户下的所有空表，并生成空表的插入语句脚本
create or replace
procedure  generate_tab_segement is
v_table                      NVARCHAR2(200);
v_sql                        VARCHAR2(200);
v_q                          NUMBER;
v_char_value                 NVARCHAR2(10);
v_varchar2_value             NVARCHAR2(10);
v_number_value               NVARCHAR2(10);
v_date_value                 NVARCHAR2(10);
v_add_value                  NVARCHAR2(10);
v_separate_value             NVARCHAR2(10);
v_insert_sql                 NVARCHAR2(4000);
col_num                      NVARCHAR2(200);
tb_name                      NVARCHAR2(200);
TYPE TCUR IS REF CURSOR;
c2 TCUR;
begin
     FOR r1 IN (SELECT table_name tn FROM tabs) LOOP
        BEGIN
            v_table   :=r1.tn;
            v_sql     := 'SELECT count(*) as q FROM ' || v_table || ' where rownum = 1';
            v_char_value := '''1''';
            v_varchar2_value := '''1''';
            v_number_value := '1';
            v_date_value := 'sysdate';
            v_separate_value := ',';
            v_insert_sql := 'insert into ';
            v_add_value :='null';
            OPEN c2 FOR v_sql ;
            LOOP
                FETCH c2 INTO v_q;
                EXIT WHEN c2%NOTFOUND;
                IF v_q = 0 THEN
                    --DBMS_OUTPUT.PUT_LINE(v_table);
                    --构造插入行
                    FOR user_null_table IN (select to_char(count(*)) as col_num,
                    t.TABLE_NAME as tb_name
                    from user_tab_columns t
                    where t.TABLE_NAME= v_table
                    group by t.TABLE_NAME) LOOP
                        BEGIN
                            col_num      := user_null_table.col_num;
                            tb_name      := user_null_table.tb_name;
                            v_insert_sql := 'insert into ';
                            v_insert_sql := v_insert_sql || tb_name || ' values(' ;
                            FOR user_tab_cols IN (select * from user_tab_columns t where t.TABLE_NAME = tb_name ORDER BY t.COLUMN_ID) LOOP
                                BEGIN                                                                  
                                    v_add_value :='null';                                   
                                    IF user_tab_cols.COLUMN_ID = col_num THEN
                                       v_separate_value := '';
                                    else
                                        v_separate_value := ',';
                                    END IF;                                  
                                    if user_tab_cols.DATA_TYPE = 'CHAR' THEN
                                        v_add_value := v_char_value;
                                    END if;
                                   
                                    IF user_tab_cols.DATA_TYPE = 'VARCHAR2' THEN
                                        v_add_value := v_varchar2_value;
                                    END if;                                   
                                    IF user_tab_cols.DATA_TYPE = 'NVARCHAR2' THEN
                                        v_add_value := v_varchar2_value;
                                    END if;                                   
                                    IF user_tab_cols.DATA_TYPE = 'NUMBER' THEN
                                        v_add_value := v_number_value;
                                    END if;                                   
                                    IF user_tab_cols.DATA_TYPE = 'LONG' THEN
                                        v_add_value := v_number_value;
                                    END if;                                   
                                    IF user_tab_cols.DATA_TYPE = 'DATE' THEN
                                        v_add_value := v_date_value;
                                    END IF;                                   
                                    IF substr(user_tab_cols.DATA_TYPE,0,9) = 'TIMESTAMP' THEN
                                        v_add_value := v_date_value;
                                    END IF;                                  
                                    v_insert_sql := v_insert_sql || v_add_value ||
                                        v_separate_value;                               
                                end;
                            END LOOP;                           
                            v_insert_sql := v_insert_sql || ');';
                            DBMS_OUTPUT.PUT_LINE(v_insert_sql);                          
                        end;
                    END LOOP;               
                end if;
            END LOOP;
            CLOSE c2;
        end;
    END LOOP;
end generate_tab_segement;
/
然后用图形界面工具去调用该存储过程，让存储过程语句执行一次，并起作用，不知道什么原因有些表的数据没有插入进去，为了保证不会出错，大家可以将执行完显示的SQL语句在执行一次就绝对不会错误。
然后将执行完的结果复制一次，在用图形界面执行一次，就可以了