ORA-12705 invalid or unknown NLS parameter value specified Cause:There are two possible causes: Either an attempt was made to issue an ALTER SESSION statement with an invalid NLS parameter or value; or the NLS_LANG environment variable contains an invalid language, territory, or character set. Action:Check the syntax of the ALTER SESSION command and the NLS parameter, correct the syntax and retry the statement, or specify correct values in the NLS_LANG environment variable. For more information about the syntax of the ALTER SESSION command, see Oracle8i SQL Reference. 书上这样写的,英文太差,没看懂,呵呵
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