天津违章罚款缴费地点:Oracle:?EXP-00091?的解决方法

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Oracle: EXP-00091 的解决方法

(2010-02-27 08:45:41)

在我们对Oracle做EXP的过程中,可能会经常遇到EXP-00091 Exporting questionable statistics.的信息,其实它就是exp的error message,它产生的原因是因为我们exp工具所在的环境变量是的NLS LANG中的NLS_CHARCATERSET不一致引起的。但需要说明的是,exp-00091这个error对所生成的dump文件没有影响,生成的dump文件还可以正常imp。

下面我们来解决这个问题,让其不在出现:

第一步: 查看DB中的NLS_CHARACTERSET的值(提供两种方法):

查询NLS_CHARACTERSET的值:
select * from nls_database_parameters t where t.parameter='NLS_CHARACTERSET'
or
select * from v$nls_parameters  where parameter='NLS_CHARACTERSET';
SQL> select * from v$nls_parameters where parameter='NLS_CHARACTERSET';

PARAMETER          VALUE
-----------------------  ----------------------------------------------
NLS_CHARACTERSET    ZHT16BIG5

第二步: 根据第一步查出的NLS_CHARACTERSET(ZHT16BIG5)來設定exp的環境變量:


WINNT> set NLS_LANG=AMERICAN_AMERICA.ZHT16BIG5

进行设定后,在环境变量中查看NLS_LANG的值是否一致,如果不一致可在环境变量中手中修改。
LINUX> export NLS_LANG=AMERICAN_AMERICA.ZHT16BIG5

附上exp-91的oracle error message 解決方案說明:

oerr exp 91
00091, 00000, "Exporting questionable statistics."
// *Cause:  Export was able export statistics, but the statistics may not be
//          usuable. The statistics are questionable because one or more of
//          the following happened during export: a row error occurred, client
//          character set or NCHARSET does not match with the server, a query
//          clause was specified on export, only certain partitions or
//          subpartitions were exported, or a fatal error occurred while
//          processing a table.
// *Action: To export non-questionable statistics, change the client character
//          set or NCHARSET to match the server, export with no query clause,
//          export complete tables. If desired, import parameters can be
//          supplied so that only non-questionable statistics will be