Siebel Error: ODBC error 08003 in SQLConnect: [DataDirect][ODBC lib] Connection not open (native error 0). Unable to login using specified ODBC parameters.

Sometimes you may get below error while starting Siebel. 

Siebel Error:

ODBC error 08003 in SQLConnect:

[DataDirect][ODBC lib] Connection not open

(native error 0).

Unable to login using specified ODBC parameters.

Resolution :

1) Check ORACLE_HOME is set or not?

2) Check LD_LIBRARY_PATH is set or not?

3) Check TNS_ADMIN is set or not?

4) Check PATH is set in or not?

If all oracle parameters are not then set it.

Example :

bash-3.2$ export ORACLE_HOME=/app/oracle/product/11.2.0/client_32

bash-3.2$ export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH

bash-3.2$ export TNS_ADMIN=/app/oracle/product/11.2.0/client_32

bash-3.2$ export PATH=$ORACLE_HOME/bin:/usr/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin