Oracle 11g数据库迁移到9i报 IMP-00003 ORA-00096 IMP-00000

今天有个朋友问我为什么11G的exp出来的文件不能导入到9I中？由于exp/imp工具的不兼容性，把高版本的数据库导到低版本时，需要使用低版本的exp/imp工具来导入导出。朋友用9i的exp去导出11G数据后再imp导入到9i中，正常导入，然而我自己在自己测试环境测试中切报错了，报错信息如下：

1. [Oracle9i@rhel4 admin]$ exp scott/oracle@orcl11g file='/tmp/scott_test_exp.sql' tables='test_exp'rows=N;
2. Export: Release 9.2.0.4.0 - Production on Fri Mar 22 06:18:38 2013
3. Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
4. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
5. With the Partitioning, OLAP, Data Mining andReal Application Testing options
6. Export done in US7ASCII charactersetand AL16UTF16 NCHARcharacterset
7. server uses ZHS16GBK characterset (possible charset conversion)
8. Note: table data (rows) will not be exported
9. About to export specified tables via Conventional Path ...
10. . . exporting table TEST_EXP
11. Export terminated successfully without warnings.
12. [oracle9i@rhel4 admin]$ imp scott/oracle file='/tmp/scott_test_exp.dmp' tables='test_exp'
13. Import: Release 9.2.0.4.0 - Production on Fri Mar 22 07:08:59 2013
14. Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
15. Connected to: Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
16. With the Partitioning, OLAP and Oracle Data Mining options
17. JServer Release 9.2.0.4.0 - Production
18. Export file created by EXPORT:V09.02.00 via conventional path
19. import done in US7ASCII charactersetand AL16UTF16 NCHARcharacterset
20. import server uses ZHS16GBK characterset (possible charset conversion)
21. IMP-00003: ORACLE error 96 encountered
22. ORA-00096: invalid value for parameter plsql_compiler_flags, must be from among NON_DEBUG, DEBUG, INTERPRETED, NATIVE
23. IMP-00000: Import terminated unsuccessfully

在11G，SHOW PARAMETER命令已经找不到plsql_compiler_flags这个参数，由另一个参数代替。

GOOGLE,BAIDU,METALINK相关的错误代码后没有找到解决方法。更改关键字plsql_compiler_flags在metalink找到解决方法,如下：

1. [oracle11g@rhel4 admin]$ sqlplus / as sysdba
2. SQL*Plus: Release 11.2.0.3.0 Production on Fri Mar 22 07:27:50 2013
3. Copyright (c) 1982, 2011, Oracle. All rights reserved.
4. Connected to:
5. Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
6. With the Partitioning, OLAP, Data Mining andReal Application Testing options
7. SQL> CREATEORREPLACEVIEW exu9defpswitches (
8. 2 compflgs, nlslensem ) AS
9. 3 SELECT a.value, b.value
10. 4 FROM sys.v$parameter a, sys.v$parameter b
11. 5 WHERE a.name = 'plsql_code_type'AND
12. 6 b.name = 'nls_length_semantics'
13. 7 ;
14. View created.