experience garbled oracle solution

Recently engaged in oracle at home when suddenly some of the garbage problem, the following brief summary of the garbage these days to exclude the experience of

First: First of all, to be sure you want to import the dmp file is the file with garbage characters (I garbled the reason for this is that because the company's database development environment al_attr the data in the table already are garbled, and the most horrible Every time the time import of data to test this form, as well as a few days later to find further information on how to solve the problem have not been garbled implementation);

Second: In the operation of the database before the export dmp file about the best implementation of select * from nls_database_parameters, the source character set dmp file to the record for the data in question into the database garbled when compared to see whether the character set the same

Introduce the following the following oracle and the corresponding character set to view and modify the Ways: the database server character set select * from nls_database_parameters, from props $ express its database file corresponding character set settings, can UPDATE PROPS $ SET value $ = 'ZHS16CGB231280' WHERE NAME = 'NLS_CHARACTERSET' to modify the parameters

Client character set environment select * from nls_instance_parameters, derived from v $ parameter, said client-side character set settings are possible parameter files, environment variables or registry

Conversation environment character set select * from nls_session_parameters, derived from v $ nls_parameters, that set up their own conversation, the conversation may be environment variables or alter session are completed,

If no special session of the settings, in line with nls_instance_parameters. Character set client requirements in line with the server in order to show the right of non-Ascii characters in the database. If there is a time when a number of settings, alter session> Environment Variables> registry> parameter document character set a uniform requirement, but the language settings can be different from the proposed language setting English. Character sets such as are zhs6gbk, while nls_lang can be American_America.zhs6gbk.

Here are some possible corresponding client NLS_LANG character set (by modifying the registry can be modified)

 AMERICAN_AMERICA.US7ASCII
 AMERICAN_AMERICA.WE8MSWIN1252
 AMERICAN_AMERICA.ZHS16GBK
 AMERICAN_AMERICA.AL32UTF8
 SIMPLIFIED CHINESE_CHINA.ZHS16GBK
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