Oracle 11g database & OBIEE 10g user id case sensitivity

Question

Hi,
Previously we used to point OBIEE to 10g database and the following query used to return data. But now we have database upgraded to 11g R2. Is there a way to make the 11g R2 database case insensitive and make the following query return results? Here when EMP_LOGIN = upper(bmiller) query is working, but not when EMP_LOGIN = bmiller.
select T32660.X_DISTRICT as c1,
count(distinct case when T32385.OPTY_WID > 0 then T32385.OPTY_WID end ) as c2
from
W_POSITION_H T37785 /* Dim_W_POSITION_H */ ,
W_POSITION_D T36585 /* Dim_W_POSITION_D */ ,
W_EMPLOYEE_D T32660 /* Dim_W_EMPLOYEE_D */ ,
W_OPTY_D T31547 /* Dim_W_OPTY_D */ ,
W_ORG_D T31796,
W_REVN_F T32385 /* Fact_W_REVN_F */
where ( T32385.PR_TEAM_POS_WID = T36585.ROW_WID
and T31547.ROW_WID = T32385.OPTY_WID
and T31796.ROW_WID = T32385.PR_ACCNT_WID
and T32385.PR_TEAM_EMP_WID = T32660.ROW_WID
and T36585.ROW_WID = T37785.SUB_POSITION_WID
and T37785.EMP_LOGIN = upper('bmiller')
and T37785.EMP_LOGIN = 'bmiller' )
group by T32660.X_DISTRICT
order by c1
Thanks
MNRK

Answer 1

If this query was working in the old system, my assumption is that something was changing your session's NLS_COMP to Linguistic. If OBIEE isn't issuing that ALTER SESSION in a login script, the next most likely scenario would be a login trigger that was issuing the ALTER SESSION when the OBIEE user logged in. That trigger would have remained in place had you used the DBUA to upgrade. If you did an export and import, however, it's possible that you didn't export the login trigger.
Justin