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：

[oracle9i@rhel4 admin]$ exp scott/oracle@orcl11g file='/tmp/scott_test_exp.sql' tables='test_exp' rows=N;

Export: Release 9.2.0.4.0 - Production on Fri Mar 22 06:18:38 2013

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.


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
Export done in US7ASCII character set and AL16UTF16 NCHAR character set
server uses ZHS16GBK character set (possible charset conversion)
Note: table data (rows) will not be exported

About to export specified tables via Conventional Path ...
. . exporting table                       TEST_EXP
Export terminated successfully without warnings.

[oracle9i@rhel4 admin]$ imp scott/oracle file='/tmp/scott_test_exp.dmp' tables='test_exp'

Import: Release 9.2.0.4.0 - Production on Fri Mar 22 07:08:59 2013

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.


Connected to: Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production

Export file created by EXPORT:V09.02.00 via conventional path
import done in US7ASCII character set and AL16UTF16 NCHAR character set
import server uses ZHS16GBK character set (possible charset conversion)
IMP-00003: ORACLE error 96 encountered
ORA-00096: invalid value  for parameter plsql_compiler_flags, must be from among NON_DEBUG, DEBUG, INTERPRETED, NATIVE
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：

[oracle11g@rhel4 admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Fri Mar 22 07:27:50 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.


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

SQL> CREATE OR REPLACE VIEW exu9defpswitches (
  2                  compflgs, nlslensem ) AS
  3          SELECT  a.value, b.value
  4          FROM    sys.v$parameter a, sys.v$parameter b
  5          WHERE   a.name = 'plsql_code_type' AND
  6                  b.name = 'nls_length_semantics'
  7  ;

View created.

再次导出导入正常

[oracle9i@rhel4 admin]$ exp scott/ORACLE@orcl11g file='/tmp/scott_test_exp.dmp' tables='test_exp';

Export: Release 9.2.0.4.0 - Production on Fri Mar 22 07:25:43 2013

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.


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
Export done in US7ASCII character set and AL16UTF16 NCHAR character set
server uses ZHS16GBK character set (possible charset conversion)

About to export specified tables via Conventional Path ...
. . exporting table                       TEST_EXP      74622 rows exported
Export terminated successfully without warnings.
[oracle9i@rhel4 admin]$ imp scott/oracle file='/tmp/scott_test_exp.dmp' tables='test_exp'

Import: Release 9.2.0.4.0 - Production on Fri Mar 22 07:25:51 2013

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.


Connected to: Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production

Export file created by EXPORT:V09.02.00 via conventional path
import done in US7ASCII character set and AL16UTF16 NCHAR character set
import server uses ZHS16GBK character set (possible charset conversion)
. importing SCOTT's objects into SCOTT
. . importing table                     "TEST_EXP"      74622 rows imported
Import terminated successfully without warnings.

11G中改回原来的视图定义

[oracle11g@rhel4 sql]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Mon Mar 25 02:15:51 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.


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

SQL> CREATE OR REPLACE VIEW exu9defpswitches (
  2                  compflgs, nlslensem ) AS
  3          SELECT  a.value, b.value
  4          FROM    sys.v$parameter a, sys.v$parameter b
  5          WHERE   a.name = 'plsql_compiler_flags' AND
  6                  b.name = 'nls_length_semantics'
  7  ;

View created.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

参考文档：

Export From 11g using EXP Utility Version 9iR2 Produces Corrupt Export Dump [ID 550740.1]