Solution to EXP-00091 errors in Linux or windows

Note:
EXP-00091: Suspicious exit statistics.
EXP-00091: Exporting questionable statistics.

Generation:
This error occurs when the database table is exported (dump) when the database server and client character set are different. This error does not affect the import.

Solution:

How to view the character set of server data:
1. Enable SQLPLUS and log on with the sys user.
2. Run SELECT * from v $ NLS_PARAMETERS where parameter = 'nls _ CHARACTERSET ';.
'Nls _ characterset' must be in uppercase.

PARAMETER
--------------------
VALUE
--------------------
NLS_CHARACTERSET
ZHS16GBK

(Linux environment)
Add the. bash_profile file to the Oracle user
Export NLS_LANG = AMERICAN_AMERICA.ZHS16GBK

(Windows)
1. Open the registry and go to the HKEY_LOCAL_MACHINE → SOFTWARE → ORACLE → HOME0 directory.
2. Check the value of NLS_LANG.
3. Change it to the same character set on the database server.
Or
Temporarily set Environment Variables
Set NLS_LANG = AMERICAN_AMERICA.ZHS16GBK