First, I’d suggest logging in through SQL Plus to see if you get the same
error. If you do, then you might very well have to bring the error to the
attention of your friendly neighborhood DBA. Or your desktop support staff.
From Oracle’s document on the error:
“ Either an attempt was made to issue an ALTER SESSION command with an
invalid NLS parameter or value; or the environment variable(s) NLS_LANG,
ORA_NLSxx, or ORACLE_HOME was incorrectly specified, therefore the NLS data
files cannot be located. ”
“ Check the syntax of the ALTER SESSION command and the NLS parameter,
correct the syntax and retry the statement, or specify the correct directory
path/values in the environment variables. ”
So… based on that, a couple possibilities I can think of off the top of my
head (limited as I don’t deal with multiple character sets so I could
really be out to lunch on this one).