zainal arifin wrote:
>
> dbms_session. set_context( namespace => 'var_dr', attribute =>
> 'account_id' , *value => account_id*) ;
>

Sepertinya gak bisa pake tipe user define/collection type. Parameter 
value harus
bertipe VARCHAR2.

SQL> DESC SYS.DBMS_SESSION
...
PROCEDURE SET_CONTEXT
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
NAMESPACE                      VARCHAR2                IN
ATTRIBUTE                      VARCHAR2                IN
VALUE                          VARCHAR2                IN
USERNAME                       VARCHAR2                IN     DEFAULT
CLIENT_ID                      VARCHAR2                IN     DEFAULT
...


CMIIW,
AH

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