Solutions to garbled comment during database migration using EXP/IMP

When you use imp/exp to import/export the 8I data to 10 Gb, it is found that all the comments of the imported data are garbled.

The reason is that the client character set is not set during the export, or the settings are incorrect. It's okay to change it to DB.

Check the character set (select userenv ('language ') from dual ;)

The exported character set is SIMPLIFIED CHINESE_CHINA.ZHS16GBK.

The imported character set is AMERICAN_AMERICA.ZHS16GBK.

The character set of the import client is AMERICAN_AMERICA.ZHS16GBK.

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This variable is not found at the export end of NLS_LANG. I export it using an Oracle user, so it is not set. No NLS_LANG

Modify. bash_profile with NLS_LANG = AMERICAN_AMERICA.ZHS16GBK

Source. bash_profile

Export again.

Modify the imported client to NLS_LANG = AMERICAN_AMERICA.ZHS16GBK.

The comment of the imported data table is normal.

Key Points of migrating 11G data to 10g platform through expdp & impdp

Oracle Data Pump examples and some precautions (expdp/impdp)

Oracle datapump expdp/impdp hang

Expdp/impdp for Oracle 10g to 11g data migration