Error in invoking sqlplus

Question

Hi All,
Yesterday we didnt one database upgrade after upgrade from 8.1.7.4 to 10.2.0.4 every thing went fine but after upgrade application users is not able to connect to the database by using their credentials.
FROM ORACLE USER
$ sqlplus
SQL*Plus: Release 10.2.0.4.0 - Production on Mon Apr 26 10:50:22 2010
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Enter user-name: / as sysdba
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
BUT BY USING APPLICATION USER CREDENTIALS ON THE SAME BOX
cyrus: sqlplus
Error 6 initializing SQL*Plus
Message file sp1<lang>.msb not found
SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory
even all the env var is setted.
even i have ran the changePerm.sh also for relaxing the permissions.
can you tell me where i have made the mistake
OS is AIX 5.3
KK

Answer 1

Hi,
1. Check if $ORACLE_HOME of both users is exactly the same
2. Check if sqlplus that you are executing is the same too (which sqlplus)
3. If that doesn't work, try executing directly ORACLE_HOME=/u01/oracle/.... sqlplus "/as sysdba"
Regards,
Mario Alcaide