Object privilege question

Question

Hi, the oracle documentation says:
A user automatically has all object privileges for schema objects contained in his or her schema. A user can grant any object privilege on any schema object he or she owns to any other user or role. A user with the GRANT ANY OBJECT PRIVILEGE can grant or revoke any specified object privilege to another user with or without the GRANT OPTION of the GRANT statement. Otherwise, the grantee can use the privilege, but cannot grant it to other users.
For example, assume user SCOTT has a table named t2:
SQL>GRANT grant any object privilege TO U1;
SQL> connect u1/u1
Connected.
SQL> GRANT select on scott.t2 \TO U2;
SQL> SELECT GRANTEE, OWNER, GRANTOR, PRIVILEGE, GRANTABLE FROM DBA_TAB_PRIVS
WHERE TABLE_NAME = 'employees';
GRANTEE                        OWNER                                GRANTOR                        PRIVILEGE                            GRA
U2                             SCOTT                              SCOTT                          SELECT                                NONow this confuses me. Surely it is U1 who is the grantor, and not Scott, no??

Answer 1

Oracleguy,
I do got your point but I guess the right reason for this would be this only that even though the user U1 didn't have the privilege and could grant it only because of Grant Any Object priv, he is not shown as the grantor but Scott does!
[oracle@edhdr1p0-prod sqlplus]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Feb 18 09:19:39 2010
Copyright (c) 1982, 2009, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> create user u1 identified by u1;
User created.
SQL> grant create session, create table to u1;
Grant succeeded.
SQL> conn u1/u1
Connected.
SQL> select * from tab;
no rows selected
SQL> conn scott/tiger
Connected.
SQL> create table t2( a number);
Table created.
SQL> conn  / as sysdba
Connected.
SQL> grant grant any object privilege to u1;
Grant succeeded.
SQL> conn u1/u1
Connected.
SQL> select * from scott.t2
  2  ;
select * from scott.t2
ERROR at line 1:
ORA-01031: insufficient privileges
SQL> grant select on scott.t2 to system;
Grant succeeded.
SQL> conn / as sysdba
Connected.
SQL>  SELECT GRANTEE, OWNER, GRANTOR, PRIVILEGE, GRANTABLE FROM DBA_TAB_PRIVS
WHERE TABLE_NAME = 'T2';
WHERE TABLE_N 'T2'
ERROR at line 2:
ORA-00920: invalid relational operator
SQL> SELECT GRANTEE, OWNER, GRANTOR, PRIVILEGE, GRANTABLE FROM DBA_TAB_PRIVS
  2  where table_name='T2';
GRANTEE                        OWNER
GRANTOR                        PRIVILEGE                                GRA
SYSTEM                         SCOTT
SCOTT                          SELECT                                   NO
SQL>
Now, when I explicitly give the priv to U1 and than he grants it, he is shown as the Grantee
Sorry, I didn't realize that its still Scott only which is shown at both the places.
USER is "SYS"
SQL> grant select on scott.t2 to U1;
Grant succeeded.
SQL> conn u1/u1
Connected.
SQL> grant select on scott.t2 to system;
Grant succeeded.
SQL> conn / as sysdba
Connected.
SQL> SELECT GRANTEE, OWNER, GRANTOR, PRIVILEGE, GRANTABLE FROM DBA_TAB_PRIVS
WHERE TABLE_NAME = 'T2';   2 
GRANTEE                        OWNER
GRANTOR                        PRIVILEGE                                GRA
SYSTEM                         SCOTT
SCOTT                          SELECT                                   NO
U1                             SCOTT
SCOTT                          SELECT                                   NO
SQL> Update:
Oracleguy,
This is what I found about this priv from docs,
http://download.oracle.com/docs/cd/E11882_01/server.112/e10592/statements_9013.htm#i2077938
GRANT ANY OBJECT PRIVILEGE
     Grant any object privilege that the object owner is permitted to grant.So I guess this should explain what is being shown in the view. Since the owner is Scott who is permitted to grant the privilege , its his name which is shown here since its his privilege which is passed to the second user. Does that sounds like a reasonable explanation?
HTH
Aman....
Edited by: Aman.... on Feb 18, 2010 9:36 AM
Edited by: Aman.... on Feb 18, 2010 11:55 AM added update