Re: change users' default schema

  • From: "Stefan Knecht" <knecht.stefan@xxxxxxxxx>
  • To: oracle-l <oracle-l@xxxxxxxxxxxxx>
  • Date: Fri, 3 Nov 2006 14:08:22 +0100

BECOME USER is actually quite interesting to me- but afaik it's got nothing
to do with current_schema.

Please correct me - the only place i've read of BECOME USER being relevant
is for the exp utility. Can't think of any database action where it's
required.
Does anyone know of any situation where it's being used ?

SQL> grant create session,create table to test1 identified by test1;

Grant succeeded.

SQL> alter user test1 default tablespace users quota 1m on users;

User altered.

SQL> grant create session to test2 identified by test2;

Grant succeeded.

SQL> conn test1/test1
Connected.
SQL> create table t (x int);

Table created.

SQL> grant select on t to test2;

Grant succeeded.

SQL> conn test2/test2
Connected.
SQL> alter session set current_schema=test1;

Session altered.

SQL> select * from t;

no rows selected

SQL>


Stefan


On 11/3/06, Norman Dunbar <norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:



Morning Mladen,

<SNIP>

>> Of course, in order to do that, you must have "BECOME LUSER"
privilege.

Can I disagree here (or be corrected) ?

I've recently set up a database whereby users login as 'themselves' and
only have CREATE SESSION privs. The application owner owns the objects.
The various users have SELECT (or other appropriate) privs granted to
the data owner's objects.

I've written a database logon trigger (after logon on database) which
checks to see if the logging in user is for the application, and if so,
sets current_schema.

I haven't had to grant BECOME_LUSER - unless it comes (hidden) with
CREATE SESSION.



Cheers,
Norman.

Norman Dunbar.
Contract Oracle DBA.
Rivers House, Leeds.

Internal : 7 28 2051
External : 0113 231 2051


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