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Re: change users' default schema

From: Stefan Knecht <knecht.stefan_at_gmail.com>
Date: Fri, 3 Nov 2006 14:08:22 +0100
Message-ID: <486b2b610611030508s6fd5190el18f7bdab57d0b545@mail.gmail.com>


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_at_environment-agency.gov.uk> 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
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Received on Fri Nov 03 2006 - 07:08:22 CST

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