EXP-00091: Exporting questionable statistics.

author:skate
time:2007/12/28

 

在用exp导出数据的时候,提示下面的exp信息:

EXP-00091: Exporting questionable statistics.

其实它就是error message,
我们都希望看见在导入的过程中 不提示任何错误信息,虽然这个错误信息
一般不会有什么影响的,除非有比较特殊的字符集,数据会有乱码(这是我个人认为的)。
下面我就把解决这个问题的方法总结下:

1.问题产生的原因
  linux下oracle用户环境变量语言集和oracle数据库中的环境变量语言集不同

2.解决方法
   只要将oracle环境变量语言集改成和数据库环境变量语言集一样的就可以

 

 

   查看服务端字符集
     select * from nls_database_parameters t where t.parameter='NLS_CHARACTERSET'
or
     select * from v$nls_parameters  where parameter='NLS_CHARACTERSET';

说明:

  查看instance字符集
     select * from nls_instance_parameters;


WINNT> set NLS_LANG=AMERICAN_AMERICA.ZHS32GB18030
LINUX> export NLS_LANG=AMERICAN_AMERICA.ZHS32GB18030


然后再执行exp,就ok了,没有EXP-00091错误提示

[oracle@db ~]$ exp userid=system/skate owner=skate  file=/home/oracle/admin/omovo/dpdump/movo_new1229.dmp log=/home/oracle/admin/omovo/dpdump/movo_new1229.log grants=y


至此,一切ok 

2025-03-10T06:43:37.165038Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2025-03-10T06:43:37.165092Z 0 [Note] --secure-file-priv is set to NULL. Operations related to importing and exporting data are disabled 2025-03-10T06:43:37.165104Z 0 [Note] /usr/local/mysql/bin/mysqld (mysqld 5.7.18) starting as process 26836 ... 2025-03-10T06:43:37.169695Z 0 [Note] InnoDB: PUNCH HOLE support not available 2025-03-10T06:43:37.169704Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2025-03-10T06:43:37.169706Z 0 [Note] InnoDB: Uses event mutexes 2025-03-10T06:43:37.169708Z 0 [Note] InnoDB: GCC builtin __sync_synchronize() is used for memory barrier 2025-03-10T06:43:37.169709Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3 2025-03-10T06:43:37.169711Z 0 [Note] InnoDB: Using Linux native AIO 2025-03-10T06:43:37.169831Z 0 [Note] InnoDB: Number of pools: 1 2025-03-10T06:43:37.169878Z 0 [Note] InnoDB: Using CPU crc32 instructions 2025-03-10T06:43:37.170938Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M 2025-03-10T06:43:37.178293Z 0 [Note] InnoDB: Completed initialization of buffer pool 2025-03-10T06:43:37.179917Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). 2025-03-10T06:43:37.191665Z 0 [Note] InnoDB: Highest supported file format is Barracuda. 2025-03-10T06:43:37.195822Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables 2025-03-10T06:43:37.195863Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ... 2025-03-10T06:43:37.209862Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB. 2025-03-10T06:43:37.210297Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active. 2025-03-10T06:43:37.210301Z 0 [Note] InnoDB: 32 n
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03-11
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