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Developer NLS Lang and User NLS Lang Environment Variables

In most cases, setting a single value for NLS_LANG will meet your needs. However, if you need to use two sets of resource and message files on the same machine at the same time, two other environment variables are available:

The syntax of DEVELOPER_NLS_LANG and USER_NLS_LANG is the same as NLS_LANG.

Use these two variables, instead of the single NLS_LANG, in the following circumstances:

Note: If these environment variables are not specifically set, they take their default values from NLS_LANG.