Tab table in Oracle database

Question

Hi All,
This is regarding the Tab table in the oracle database.
When I query this Tab table using a database account I cannot see some of the tables in it, where as using another database accout I can see all those tables.
Any idea why?

Answer 1

both user own different tables.
Defination of TAB view is below
  1* select owner,text from dba_views where view_name='TAB'
OWNER                          TEXT
SYS                            select o.name,
                                     decode(o.type#, 2, 'TABLE', 3, 'CL
                               USTER',
                                            4, 'VIEW', 5, 'SYNONYM'), t
                               .tab#
                                 from  sys.tab$ t, sys."_CURRENT_EDITIO
                               N_OBJ" o
                                 where o.owner# = userenv('SCHEMAID')
                                 and o.type# >=2
                                 and o.type# <=5
                                 and o.linkname is null
                                 and o.obj# = t.obj# (+)
it showing user tables detail
SQL> sho user
USER is "SCOTT"
SQL>
SQL>  select * from tab;
TNAME                          TABTYPE  CLUSTERID
DEPT                           TABLE
EMP                            TABLE
BONUS                          TABLE
SALGRADE                       TABLE
EMP2                           TABLE
T6                             TABLE
T3                             TABLE
EMP1                           TABLE
EMP1_TEMP                      TABLE
T$1                            TABLE
T$2                            TABLE
TEST                           TABLE
TT                             TABLE
BULK                           TABLE
14 rows selected.
SQL> select table_name from user_tables;
TABLE_NAME
DEPT
EMP
BONUS
SALGRADE
EMP2
T6
T3
EMP1_TEMP
T$1
T$2
TEST
TT
BULK
EMP1
14 rows selected.
SQL>
SQL>
SQL>
SQL> create table tst(no number);
Table created.
SQL>  select table_name from user_tables;
TABLE_NAME
DEPT
EMP
BONUS
SALGRADE
EMP2
T6
T3
EMP1_TEMP
T$1
T$2
TST
TEST
TT
BULK
EMP1
15 rows selected.
SQL> select * from tab;
TNAME                          TABTYPE  CLUSTERID
DEPT                           TABLE
EMP                            TABLE
BONUS                          TABLE
SALGRADE                       TABLE
EMP2                           TABLE
T6                             TABLE
T3                             TABLE
EMP1                           TABLE
EMP1_TEMP                      TABLE
T$1                            TABLE
T$2                            TABLE
TST                            TABLE
TEST                           TABLE
TT                             TABLE
BULK                           TABLE
15 rows selected.