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EXP-00091: Exporting questionable statistics 问题处理方法

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Jun 07, 2016 pm 04:08 PM

在使用EXP工具进行导出备份或迁移数据的时候有时会报很多的ldquo;EXP-00091: Exporting questionable statisticsrdquo;错误，具

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EXP-00091: Exporting questionable statistics 问题处理方法

[日期：2015-03-05] 来源：Linux社区作者：Linux [字体：]

在使用EXP工具进行导出备份或迁移数据的时候有时会报很多的“EXP-00091: Exporting questionable statistics”错误，具体的现象和处理方法请观看……

1.问题现象
[Oracle@RH207 exp]$ exp test/test file=test.dmf log=test.log
……忽略……
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
. . exporting table SNP_TXT 6345 rows exported
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
. . exporting table SNP_TXT_CROSSR 1019 rows exported
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00008: ORACLE error 1013 encountered
ORA-01013: user requested cancel of current operation
EXP-00056: ORACLE error 1403 encountered
……忽略……

2.处理方法
指定Linux系统的NLS_LANG环境变量为数据库的数据集
1）查询数据库的字符集（方法很多只用一种）
SQL> select userenv('language') from dual;

USERENV('LANGUAGE')
----------------------------------------------------
AMERICAN_AMERICA.WE8ISO8859P1

2）设置Linux操作系统的NLS_LANG环境变量
[oracle@RH207 exp]$export NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1

Window系统的环境变量的修改方法是：
C:\>set NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1

3.OK，处理完成，在进行EXP导出操作就不会报这个错误了

本文永久更新链接地址：

Oracle 10046事件

MySQL模糊查询：LIKE模式和REGEXP模式

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