How to know the password of database schema...

Question

Hi all,
i forget the Password of a particular schema. i have the Password of SYS. Kindly tell me the table from where i can get to know the Password.
Or
Tell me How to delete the same particular schema from all the system table where is is mentioned. Tell me the Table Names.

Answer 1

And to illustrate what said Mark...
SQL> show user
USER is "SYSTEM"
SQL> alter session set current_schema=scott;
Session altered.
SQL> create table truc as select * from dba_objects where 1=2;
Table created.
SQL> select owner from dba_tables where table_name = 'TRUC';
OWNER
SCOTT
1 row selected.
SQL> disc
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> conn system/demo102a@demo102a
Connected.
SQL> desc truc
ERROR:
ORA-04043: object truc does not exist
SQL> desc scott.truc
Name                        Null?    Type
OWNER                                VARCHAR2(30)
OBJECT_NAME                          VARCHAR2(128)
SUBOBJECT_NAME                       VARCHAR2(30)
OBJECT_ID                            NUMBER
DATA_OBJECT_ID                       NUMBER
OBJECT_TYPE                          VARCHAR2(19)
CREATED                              DATE
LAST_DDL_TIME                        DATE
TIMESTAMP                            VARCHAR2(19)
STATUS                               VARCHAR2(7)
TEMPORARY                            VARCHAR2(1)
GENERATED                            VARCHAR2(1)
SECONDARY                            VARCHAR2(1)
SQL> Nicolas.